D640G70VI_技术文档

Am29DL640G

Data Sheet

RETIRED

PRODUCT

This product has been retired and is not recommended for designs. For new and current designs,

S29JL064H (for TSOP packages) and S29PL064J (for FBGA packages) supersede AM29DL640G as

the factory-recommended migration path. Please refer to each respective datasheets for specifica-

tions and ordering information. Availability of this document is retained for reference and historical

purposes only.

April 2005

The following document specifies Spansion memory products that are now offered by both Advanced

Micro Devices and Fujitsu. Although the document is marked with the name of the company that

originally developed the specification, these products will be offered to customers of both AMD and

Fujitsu.

Continuity of Specifications

There is no change to this datasheet as a result of offering the device as a Spansion product. Any

changes that have been made are the result of normal datasheet improvement and are noted in the

document revision summary, where supported. Future routine revisions will occur when appro-

priate, and changes will be noted in a revision summary.

For More Information

Please contact your local AMD or Fujitsu sales office for additional information about Spansion

memory solutions.

Publication Number 25693 Revision B Amendment 5 Issue Date June 6, 2005

THIS PAGE LEFT INTENTIONALLY BLANK.

Am29DL640G

64 Megabit (8 M x 8-Bit/4 M x 16-Bit)

CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory

This product has been retired and is not recommended for designs. For new and current designs, S29JL064H (for TSOP packages) and S29PL064J (for FBGA packages) supersede

AM29DL640G as the factory-recommended migration path. Please refer to each respective datasheets for specifications and ordering information. Availability of this document is retained

for reference and historical purposes only.

DISTINCTIVE CHARACTERISTICS

■ Ultra low power consumption (typical values)

— 2 mA active read current at 1 MHz

ARCHITECTURAL ADVANTAGES

■ Simultaneous Read/Write operations

— 10 mA active read current at 5 MHz

— Data can be continuously read from one bank while

executing erase/program functions in another bank.

— 200 nA in standby or automatic sleep mode

— Zero latency between read and write operations

■ Minimum 1 million erase cycles guaranteed per

sector

■ 20 year data retention at 125°C

— Reliable operation for the life of the system

■ Flexible Bank^TMarchitecture

— Read may occur in any of the three banks not being

written or erased.

— Four banks may be grouped by customer to achieve

desired bank divisions.

SOFTWARE FEATURES

■ Data Management Software (DMS)

— AMD-supplied software manages data programming,

enabling EEPROM emulation

■ Boot Sectors

— Top and bottom boot sectors in the same device

— Any combination of sectors can be erased

— Eases historical sector erase flash limitations

■ Manufactured on 0.17 µm process technology

■ Supports Common Flash Memory Interface (CFI)

■ Erase Suspend/Erase Resume

■ SecSi™ (Secured Silicon) Sector: Extra 256 Byte

sector

— Suspends erase operations to allow reading from

other sectors in same bank

— Factory locked and identifiable: 16 bytes available for

secure, random factory Electronic Serial Number;

verifiable as factory locked through autoselect

function. ExpressFlash option allows entire sector to

be available for factory-secured data

■ Data# Polling and Toggle Bits

— Provides a software method of detecting the status of

program or erase cycles

■ Unlock Bypass Program command

— Reduces overall programming time when issuing

multiple program command sequences

— Customer lockable: One-time programmable only.

Once locked, data cannot be changed

■ Zero Power Operation

HARDWARE FEATURES

— Sophisticated power management circuits reduce

power consumed during inactive periods to nearly

zero.

■ Ready/Busy# output (RY/BY#)

— Hardware method for detecting program or erase

cycle completion

■ Compatible with JEDEC standards

■ Hardware reset pin (RESET#)

— Hardware method of resetting the internal state

machine to the read mode

— Pinout and software compatible with

single-power-supply flash standard

PACKAGE OPTIONS

■ WP#/ACC input pin

— Write protect (WP#) function protects sectors 0, 1,

140, and 141, regardless of sector protect status

■ 63-ball Fine Pitch BGA

■ 64-ball Fortified BGA

■ 48-pin TSOP

— Acceleration (ACC) function accelerates program

timing

■ Sector protection

PERFORMANCE CHARACTERISTICS

— Hardware method of locking a sector, either

in-system or using programming equipment, to

prevent any program or erase operation within that

sector

■ High performance

— Access time as fast as 70 ns

— Program time: 4 µs/word typical utilizing Accelerate

function

— Temporary Sector Unprotect allows changing data in

protected sectors in-system

Publication# 25693 Rev: B Amendment 5

Issue Date: June 6, 2005

Refer to AMD’s Website (www.amd.com) for the latest information.

GENERAL DESCRIPTION

The Am29DL640G is a 64 megabit, 3.0 volt-only flash

memory device, organized as 4,194,304 words of 16

bits each or 8,388,608 bytes of 8 bits each. Word

mode data appears on DQ15–DQ0; byte mode data

appears on DQ7–DQ0. The device is designed to be

programmed in-system with the standard 3.0 volt V_CC

supply, and can also be programmed in standard

EPROM programmers.

Factory locked parts provide several options. The

SecSi Sector may store a secure, random 16 byte

ESN (Electronic Serial Number), customer code (pro-

grammed through AMD’s ExpressFlash service), or

both. Customer Lockable parts may utilize the SecSi

Sector as bonus space, reading and writing like any

other flash sector, or may permanently lock their own

code there.

The device is available with an access time of 70, 90,

or 120 ns and is offered in 48-pin TSOP, 63-ball

Fine-Pitch BGA, and 64-ball Fortified BGA packages.

Standard control pins—chip enable (CE#), write en-

able (WE#), and output enable (OE#)—control normal

read and write operations, and avoid bus contention

issues.

DMS (Data Management Software) allows systems

to easily take advantage of the advanced architecture

of the simultaneous read/write product line by allowing

removal of EEPROM devices. DMS will also allow the

system software to be simplified, as it will perform all

functions necessary to modify data in file structures,

as opposed to single-byte modifications. To write or

update a particular piece of data (a phone number or

configuration data, for example), the user only needs

to state which piece of data is to be updated, and

where the updated data is located in the system. This

is an advantage compared to systems where

user-written software must keep track of the old data

location, status, logical to physical translation of the

data onto the Flash memory device (or memory de-

vices), and more. Using DMS, user-written software

does not need to interface with the Flash memory di-

rectly. Instead, the user's software accesses the Flash

memory by calling one of only six functions. AMD pro-

vides this software to simplify system design and soft-

ware integration efforts.

The device requires only a single 3.0 volt power sup-

ply for both read and write functions. Internally gener-

ated and regulated voltages are provided for the

program and erase operations.

Simultaneous Read/Write Operations with

Zero Latency

The Simultaneous Read/Write architecture provides

simultaneous operation by dividing the memory

space into four banks, two 8 Mb banks with small and

large sectors, and two 24 Mb banks of large sectors.

Sector addresses are fixed, system software can be

used to form user-defined bank groups.

During an Erase/Program operation, any of the three

non-busy banks may be read from. Note that only two

banks can operate simultaneously. The device can im-

prove overall system performance by allowing a host

system to program or erase in one bank, then

immediately and simultaneously read from the other

bank, with zero latency. This releases the system from

waiting for the completion of program or erase

operations.

The device offers complete compatibility with the

JEDEC single-power-supply Flash command set

standard. Commands are written to the command

register using standard microprocessor write timings.

Reading data out of the device is similar to reading

from other Flash or EPROM devices.

The host system can detect whether a program or

erase operation is complete by using the device sta-

tus bits: RY/BY# pin, DQ7 (Data# Polling) and

DQ6/DQ2 (toggle bits). After a program or erase cycle

has been completed, the device automatically returns

to the read mode.

The Am29DL640G can be organized as both a top

and bottom boot sector configuration.

Bank

Megabits

Sector Sizes

The sector erase architecture allows memory sec-

tors to be erased and reprogrammed without affecting

the data contents of other sectors. The device is fully

erased when shipped from the factory.

Eight 8 Kbyte/4 Kword,

Fifteen 64 Kbyte/32 Kword

Bank 1

8 Mb

Bank 2

Bank 3

24 Mb

Forty-eight 64 Kbyte/32 Kword

Hardware data protection measures include a low

V_CCdetector that automatically inhibits write opera-

tions during power transitions. The hardware sector

protection feature disables both program and erase

operations in any combination of the sectors of mem-

ory. This can be achieved in-system or via program-

ming equipment.

Eight 8 Kbyte/4 Kword,

Fifteen 64 Kbyte/32 Kword

Bank 4

8 Mb

Am29DL640G Features

The SecSi™ (Secured Silicon) Sector is an extra

256 byte sector capable of being permanently locked

by AMD or customers. The SecSi Indicator Bit (DQ7)

is permanently set to a 1 if the part is factory locked,

and set to a 0 if customer lockable. This way, cus-

tomer lockable parts can never be used to replace a

factory locked part.

The device offers two power-saving features. When

addresses have been stable for a specified amount of

time, the device enters the automatic sleep mode.

The system can also place the device into the

standby mode. Power consumption is greatly re-

duced in both modes.

2

Am29DL640G

June 6, 2005

TABLE OF CONTENTS

Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 5

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . 6

Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . 7

Special Handling Instructions for BGA Packages .....................7

Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Ordering Information. . . . . . . . . . . . . . . . . . . . . . . 9

Device Bus Operations . . . . . . . . . . . . . . . . . . . . 10

Table 1. Am29DL640G Device Bus Operations ..............................10

Word/Byte Configuration ........................................................ 10

Requirements for Reading Array Data ...................................10

Writing Commands/Command Sequences ............................11

Accelerated Program Operation .............................................11

Autoselect Functions .............................................................. 11

Simultaneous Read/Write Operations with Zero Latency .......11

Standby Mode ........................................................................ 11

Automatic Sleep Mode ...........................................................12

RESET#: Hardware Reset Pin ...............................................12

Output Disable Mode .............................................................. 12

Table 2. Am29DL640G Sector Architecture ....................................12

Table 3. Bank Address ....................................................................15

Table 4. SecSi^TMSector Addresses ................................................15

Autoselect Mode..................................................................... 15

Table 5. Am29DL640G Autoselect Codes, (High Voltage Method) 16

Sector/Sector Block Protection and Unprotection .................. 17

Table 6. Am29DL640G Boot Sector/Sector Block Addresses for

Protection/Unprotection ...................................................................17

Write Protect (WP#) ................................................................17

Table 7. WP#/ACC Modes ..............................................................18

Temporary Sector Unprotect ..................................................18

Figure 1. Temporary Sector Unprotect Operation........................... 18

Figure 2. In-System Sector Protect/Unprotect Algorithms .............. 19

SecSi™ (Secured Silicon) Sector

Flash Memory Region ............................................................ 20

Figure 3. SecSi Sector Protect Verify.............................................. 21

Hardware Data Protection ......................................................21

Low VCC Write Inhibit ............................................................ 21

Write Pulse “Glitch” Protection ...............................................21

Logical Inhibit .......................................................................... 21

Power-Up Write Inhibit ............................................................ 21

Common Flash Memory Interface (CFI). . . . . . . 21

Table 8. CFI Query Identification String.......................................... 22

Table 9. System Interface String......................................................22

Table 10. Device Geometry Definition ............................................ 23

Table 11. Primary Vendor-Specific Extended Query ...................... 24

Command Definitions . . . . . . . . . . . . . . . . . . . . . 25

Reading Array Data ................................................................25

Reset Command .....................................................................25

Autoselect Command Sequence ............................................25

Enter SecSi™ Sector/Exit SecSi Sector

Erase Suspend/Erase Resume Commands ...........................28

Table 12. Am29DL640G Command Definitions ............................. 29

Write Operation Status. . . . . . . . . . . . . . . . . . . . . 30

DQ7: Data# Polling .................................................................30

Figure 6. Data# Polling Algorithm .................................................. 30

RY/BY#: Ready/Busy#............................................................ 31

DQ6: Toggle Bit I ....................................................................31

Figure 7. Toggle Bit Algorithm........................................................ 31

DQ2: Toggle Bit II ................................................................... 32

Reading Toggle Bits DQ6/DQ2 ...............................................32

DQ5: Exceeded Timing Limits ................................................ 32

DQ3: Sector Erase Timer ....................................................... 32

Table 13. Write Operation Status ................................................... 33

Absolute Maximum Ratings. . . . . . . . . . . . . . . . . 34

Figure 8. Maximum Negative Overshoot Waveform ...................... 34

Figure 9. Maximum Positive Overshoot Waveform........................ 34

DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 10. I_CC1Current vs. Time (Showing Active and

Automatic Sleep Currents)............................................................. 36

Figure 11. Typical I_CC1vs. Frequency............................................ 36

Test Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 12. Test Setup.................................................................... 37

Figure 13. Input Waveforms and Measurement Levels ................. 37

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 38

Read-Only Operations ...........................................................38

Figure 14. Read Operation Timings ............................................... 38

Hardware Reset (RESET#) .................................................... 39

Figure 15. Reset Timings ............................................................... 39

Word/Byte Configuration (BYTE#) ..........................................40

Figure 16. BYTE# Timings for Read Operations............................ 40

Figure 17. BYTE# Timings for Write Operations............................ 40

Erase and Program Operations ..............................................41

Figure 18. Program Operation Timings.......................................... 42

Figure 19. Accelerated Program Timing Diagram.......................... 42

Figure 20. Chip/Sector Erase Operation Timings .......................... 43

Figure 21. Back-to-back Read/Write Cycle Timings ...................... 44

Figure 22. Data# Polling Timings (During Embedded Algorithms). 44

Figure 23. Toggle Bit Timings (During Embedded Algorithms)...... 45

Figure 24. DQ2 vs. DQ6................................................................. 45

Temporary Sector Unprotect .................................................. 46

Figure 25. Temporary Sector Unprotect Timing Diagram .............. 46

Figure 26. Sector/Sector Block Protect and

Unprotect Timing Diagram ............................................................. 47

Alternate CE# Controlled Erase and Program Operations ..... 48

Figure 27. Alternate CE# Controlled Write (Erase/Program)

Operation Timings.......................................................................... 49

Erase And Programming Performance. . . . . . . . 50

Latchup Characteristics. . . . . . . . . . . . . . . . . . . . 50

TSOP & BGA Pin Capacitance. . . . . . . . . . . . . . . 50

Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 52

FBE063—63-Ball Fine-Pitch Ball Grid Array (FBGA)

Command Sequence .............................................................. 25

Byte/Word Program Command Sequence ............................. 26

Unlock Bypass Command Sequence .....................................26

Figure 4. Program Operation .......................................................... 27

Chip Erase Command Sequence ........................................... 27

Sector Erase Command Sequence ........................................27

Figure 5. Erase Operation............................................................... 28

12 x 11 mm package .............................................................. 52

LAA064—64-Ball Fortified Ball Grid Array (FBGA)

13 x 11 mm package .............................................................. 53

TS 048—48-Pin Standard TSOP ............................................54

Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 55

June 6, 2005

Am29DL640G

3

PRODUCT SELECTOR GUIDE

Part Number

Am29DL640G

Speed Option

Standard Voltage Range: V_CC= 2.7–3.6 V

70

30

90

35

120

50

Max Access Time (ns), t_ACC

CE# Access (ns), t_CE

OE# Access (ns), t_OE

BLOCK DIAGRAM

V

CC

OE# BYTE#

SS

Mux

Bank 1

Bank 1 Address

A21–A0

X-Decoder

Bank 2 Address

RY/BY#

Bank 2

X-Decoder

A21–A0

RESET#

STATE

CONTROL

&

Status

WE#

DQ15–DQ0

COMMAND

REGISTER

CE#

BYTE#

WP#/ACC

Control

Mux

DQ0–DQ15

X-Decoder

Bank 3

Bank 3 Address

Bank 4 Address

X-Decoder

Bank 4

A21–A0

Mux

4

Am29DL640G

June 6, 2005

CONNECTION DIAGRAMS

A15

A14

A13

A12

A11

A10

A9

A8

1

2

3

4

5

6

7

8

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

A16

BYTE#

V_SS

DQ15/A-1

DQ7

DQ14

DQ6

DQ13

DQ5

DQ12

DQ4

V_CC

DQ11

DQ3

DQ10

DQ2

DQ9

DQ1

DQ8

DQ0

OE#

V_SS

CE#

A0

48-Pin Standard TSOP

A19

A20

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

WE#

RESET#

A21

WP#/ACC

RY/BY#

A18

A17

A7

A6

A5

A4

A3

A2

A1

63-Ball Fine-Pitch BGA (FBGA)

Top View, Balls Facing Down

L8

M8

A8

B8

NC*

A7

B7

C7

D7

E7

F7

G7

H7

J7

K7

L7

M7

V_SS

NC*

A13

A12

A14

A15

A16

BYTE# DQ15/A-1

C6

A9

D6

A8

E6

F6

G6

H6

J6

K6

A10

A11

DQ7

DQ14

DQ13

DQ6

C5

D5

E5

F5

G5

H5

J5

K5

V_CC

WE# RESET#

A21

A19

DQ5

DQ12

DQ4

C4 D4

E4

F4

G4

H4

J4

K4

RY/BY# WP#/ACC A18

A20

DQ2

DQ10

DQ11

DQ3

C3

A7

D3

E3

A6

F3

A5

G3

H3

J3

K3

A17

DQ0

DQ8

DQ9

DQ1

C2

A3

D2

A4

E2

A2

F2

A1

G2

A0

H2

J2

K2

L2

M2

A2

V_SS

CE#

OE#

NC*

A1

B1

L1

M1

* Balls are shorted together via the substrate but not connected to the die.

NC*

June 6, 2005

Am29DL640G

5

CONNECTION DIAGRAMS

64-Ball Fortified BGA

Top View, Balls Facing Down

A8

B8

C8

D8

E8

F8

G8

NC

H8

NC

V_SS

NC

A7

B7

C7

D7

E7

F7

G7

H7

A13

A12

A14

A15

A16

BYTE#

DQ15

V_SS

A6

A9

B6

A8

C6

D6

E6

F6

G6

H6

DQ6

A10

A11

DQ7

DQ14

DQ13

A5

B5

C5

D5

E5

F5

G5

H5

WE# RESET#

A21

A19

DQ5

DQ12

V_CC

DQ4

A4 B4

C4

D4

E4

F4

G4

H4

RY/BY# WP#/ACC A18

A20

DQ2

DQ10

DQ11

DQ3

A3

A7

B3

C3

A6

D3

A5

E3

F3

G3

H3

A17

DQ0

DQ8

DQ9

DQ1

A2

A3

B2

A4

C2

A2

D2

A1

E2

A0

F2

G2

H2

CE#

OE#

V_SS

A1

B1

C1

D1

E1

F1

G1

NC

H1

NC

and/or data integrity may be compromised if the

package body is exposed to temperatures above

¹⁵⁰°C for prolonged periods of time.

Special Handling Instructions for BGA

Packages

Special handling is required for Flash Memory products

in molded packages (TSOP and BGA). The package

6

Am29DL640G

June 6, 2005

PIN DESCRIPTION

LOGIC SYMBOL

A21–A0

= 22 Addresses

22

DQ14–DQ0 = 15 Data Inputs/Outputs (x16-only de-

vices)

A21–A0

16 or 8

DQ15–DQ0

(A-1)

DQ15/A-1

= DQ15 (Data Input/Output, word mode)

A-1 (LSB Address Input, byte mode)

= Chip Enable

CE#

OE#

CE#

OE#

= Output Enable

WE#

= Write Enable

WP#/ACC

RESET#

BYTE#

WP#/ACC

= Hardware Write Protect/

Acceleration Pin

RY/BY#

RESET#

BYTE#

RY/BY#

V_CC

= Hardware Reset Pin, Active Low

= Selects 8-bit or 16-bit mode

= Ready/Busy Output

= 3.0 volt-only single power supply

(see Product Selector Guide for speed

options and voltage supply tolerances)

V_SS

NC

= Device Ground

= Pin Not Connected Internally

June 6, 2005

Am29DL640G

7

ORDERING INFORMATION

Standard Products

AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is

formed by a combination of the following:

Am29DL640G

70

E

I

OPTIONAL PROCESSING

Blank = Standard Processing

N

=

16-byte ESN devices

(Contact an AMD representative for more information)

TEMPERATURE RANGE

I

=

^{Industrial (–40}°C to +85°C)

Extended (–55°C to +125°C)

E

PACKAGE TYPE

E

=

48-Pin Thin Small Outline Package

(TSOP) Standard Pinout (TS 048)

PC

WH

64-Ball Fortified Ball Grid Array

1.0 mm pitch, 13 x 11 mm package (LAA064)

63-Ball Fine-Pitch Ball Grid Array

0.80 mm pitch, 12 x 11 mm package (FBE063)

SPEED OPTION

See Product Selector Guide and Valid Combinations

DEVICE NUMBER/DESCRIPTION

Am29DL640G

64 Megabit (8 M x 8-Bit/4 M x 16-Bit) CMOS Flash Memory

3.0 Volt-only Read, Program, and Erase

Valid Combinations for TSOP Packages

Valid Combinations for BGA Packages

Order Number Package Marking

Am29DL640G70

Am29DL640G90

Am29DL640G120

EI

PCI

WHI

PCI

D640G70P

D640G70V

D640G90P

D640G90V

I

Am29DL640G70

Am29DL640G90

EI, EE

Valid Combinations

WHI

Valid Combinations list configurations planned to be supported in

volume for this device. Consult the local AMD sales office to con-

firm availability of specific valid combinations and to check on

newly released combinations.

PCI,

WHI

D640G12P

D640G12V

Am29DL640G120

I, E

PCE,

WHE

8

Am29DL640G

June 6, 2005

DEVICE BUS OPERATIONS

This section describes the requirements and use of

the device bus operations, which are initiated through

the internal command register. The command register

itself does not occupy any addressable memory loca-

tion. The register is a latch used to store the com-

mands, along with the address and data information

needed to execute the command. The contents of the

register serve as inputs to the internal state machine.

The state machine outputs dictate the function of the

device. Table 1 lists the device bus operations, the in-

puts and control levels they require, and the resulting

output. The following subsections describe each of

these operations in further detail.

Table 1. Am29DL640G Device Bus Operations

DQ15–DQ8

BYTE#

Addresses

(Note 2)

BYTE#

= V_IH

DQ7–

DQ0

Operation

CE# OE# WE# RESET# WP#/ACC

= V_IL

Read

Write

L

H

L

H

L/H

A_IN

D_OUT

D_IN

D_OUT

D_IN

DQ8–DQ14 =

High-Z, DQ15 = A-1

H

(Note 3)

V_CC

0.3 V

±

V_CC±

0.3 V

Standby

X

L/H

X

High-Z

Output Disable

Reset

L

H

X

H

X

H

L

L/H

X

High-Z

X

SA, A6 = L,

A1 = H, A0 = L

Sector Protect (Note 2)

L

H

X

L

V_ID

L/H

X

D_IN

SA, A6 = H,

A1 = H, A0 = L

Sector Unprotect (Note 2)

(Note 3)

Temporary Sector

Unprotect

X

A_IN

D_IN

High-Z

Legend: L = Logic Low = V_IL, H = Logic High = V_IH, V_ID= 11.5–12.5 V, V_HH= 9.0 ± 0.5 V, X = Don’t Care, SA = Sector Address,

A_IN= Address In, D_IN= Data In, D_OUT= Data Out

Notes:

1. Addresses are A21:A0 in word mode (BYTE# = V_IH), A21:A-1 in byte mode (BYTE# = V_IL).

2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector/Sector

Block Protection and Unprotection” section.

3. If WP#/ACC = V_IL, sectors 0, 1, 140, and 141 remain protected. If WP#/ACC = V_IH, protection on sectors 0, 1, 140, and 141

depends on whether they were last protected or unprotected using the method described in “Sector/Sector Block Protection

and Unprotection”. If WP#/ACC = V_HH, all sectors will be unprotected.

Word/Byte Configuration

Requirements for Reading Array Data

The BYTE# pin controls whether the device data I/O

pins operate in the byte or word configuration. If the

BYTE# pin is set at logic ‘1’, the device is in word con-

figuration, DQ15–DQ0 are active and controlled by

CE# and OE#.

To read array data from the outputs, the system must

drive the CE# and OE# pins to V_IL. CE# is the power

control and selects the device. OE# is the output con-

trol and gates array data to the output pins. WE#

should remain at V_IH. The BYTE# pin determines

whether the device outputs array data in words or

bytes.

If the BYTE# pin is set at logic ‘0’, the device is in byte

configuration, and only data I/O pins DQ7–DQ0 are

active and controlled by CE# and OE#. The data I/O

pins DQ14–DQ8 are tri-stated, and the DQ15 pin is

used as an input for the LSB (A-1) address function.

The internal state machine is set for reading array data

upon device power-up, or after a hardware reset. This

ensures that no spurious alteration of the memory

content occurs during the power transition. No com-

mand is necessary in this mode to obtain array data.

Standard microprocessor read cycles that assert valid

June 6, 2005

Am29DL640G

9

addresses on the device address inputs produce valid

data on the device data outputs. Each bank remains

enabled for read access until the command register

contents are altered.

as required by the Unlock Bypass mode. Removing

V_HHfrom the WP#/ACC pin returns the device to nor-

mal operation. Note that V_HHmust not be asserted on

WP#/ACC for operations other than accelerated pro-

gramming, or device damage may result. In addition,

the WP#/ACC pin must not be left floating or uncon-

nected; inconsistent behavior of the device may result.

See “Write Protect (WP#)” on page 16 for related infor-

mation.

Refer to the AC Read-Only Operations table for timing

specifications and to Figure 14 for the timing diagram.

I_CC1in the DC Characteristics table represents the ac-

tive current specification for reading array data.

Writing Commands/Command Sequences

Autoselect Functions

To write a command or command sequence (which in-

cludes programming data to the device and erasing

sectors of memory), the system must drive WE# and

CE# to V_IL, and OE# to V_IH.

If the system writes the autoselect command se-

quence, the device enters the autoselect mode. The

system can then read autoselect codes from the inter-

nal register (which is separate from the memory array)

on DQ15–DQ0. Standard read cycle timings apply in

this mode. Refer to the Autoselect Mode and Autose-

lect Command Sequence sections for more informa-

tion.

For program operations, the BYTE# pin determines

whether the device accepts program data in bytes or

words. Refer to “Word/Byte Configuration” for more in-

formation.

The device features an Unlock Bypass mode to facili-

tate faster programming. Once a bank enters the Un-

lock Bypass mode, only two write cycles are required

to program a word or byte, instead of four. The

“Byte/Word Program Command Sequence” section

has details on programming data to the device using

both standard and Unlock Bypass command se-

quences.

Simultaneous Read/Write Operations with

Zero Latency

This device is capable of reading data from one bank

of memory while programming or erasing in the other

bank of memory. An erase operation may also be sus-

pended to read from or program to another location

within the same bank (except the sector being

erased). Figure 21 shows how read and write cycles

may be initiated for simultaneous operation with zero

latency. I_CC6and I_CC7in the DC Characteristics table

represent the current specifications for read-while-pro-

gram and read-while-erase, respectively.

An erase operation can erase one sector, multiple sec-

tors, or the entire device. Table 2 indicates the address

space that each sector occupies. Similarly, a “sector

address” is the address bits required to uniquely select

a sector. The “Command Definitions” section has de-

tails on erasing a sector or the entire chip, or suspend-

ing/resuming the erase operation.

Standby Mode

When the system is not reading or writing to the de-

vice, it can place the device in the standby mode. In

this mode, current consumption is greatly reduced,

and the outputs are placed in the high impedance

state, independent of the OE# input.

The device address space is divided into four banks. A

“bank address” is the address bits required to uniquely

select a bank.

I_CC2in the DC Characteristics table represents the ac-

tive current specification for the write mode. The AC

Characteristics section contains timing specification

tables and timing diagrams for write operations.

The device enters the CMOS standby mode when the

CE# and RESET# pins are both held at V_CC± 0.3 V.

(Note that this is a more restricted voltage range than

V_IH.) If CE# and RESET# are held at V_IH, but not within

V_CC± 0.3 V, the device will be in the standby mode,

but the standby current will be greater. The device re-

quires standard access time (t_CE) for read access

when the device is in either of these standby modes,

before it is ready to read data.

Accelerated Program Operation

The device offers accelerated program operations

through the ACC function. This is one of two functions

provided by the WP#/ACC pin. This function is prima-

rily intended to allow faster manufacturing throughput

at the factory.

If the device is deselected during erasure or program-

ming, the device draws active current until the

operation is completed.

If the system asserts V_HHon this pin, the device auto-

matically enters the aforementioned Unlock Bypass

mode, temporarily unprotects any protected sectors,

and uses the higher voltage on the pin to reduce the

time required for program operations. The system

would use a two-cycle program command sequence

I_CC3in the DC Characteristics table represents the

standby current specification.

10

Am29DL640G

June 6, 2005

draws CMOS standby current (I_CC4). If RESET# is held

at V_ILbut not within V_SS±0.3 V, the standby current will

be greater.

Automatic Sleep Mode

The automatic sleep mode minimizes Flash device en-

ergy consumption. The device automatically enables

this mode when addresses remain stable for t_ACC

+

The RESET# pin may be tied to the system reset cir-

cuitry. A system reset would thus also reset the Flash

memory, enabling the system to read the boot-up firm-

ware from the Flash memory.

30 ns. The automatic sleep mode is independent of

the CE#, WE#, and OE# control signals. Standard ad-

dress access timings provide new data when ad-

dresses are changed. While in sleep mode, output

data is latched and always available to the system.

I_CC5in the DC Characteristics table represents the

automatic sleep mode current specification.

If RESET# is asserted during a program or erase op-

eration, the RY/BY# pin remains a “0” (busy) until the

internal reset operation is complete, which requires a

time of t_READY(during Embedded Algorithms). The sys-

tem can thus monitor RY/BY# to determine whether

the reset operation is complete. If RESET# is asserted

when a program or erase operation is not executing

(RY/BY# pin is “1”), the reset operation is completed

within a time of t_READY(not during Embedded Algo-

rithms). The system can read data t_RHafter the RE-

SET# pin returns to V_IH.

RESET#: Hardware Reset Pin

The RESET# pin provides a hardware method of re-

setting the device to reading array data. When the RE-

SET# pin is driven low for at least a period of t_RP, the

device immediately terminates any operation in

progress, tristates all output pins, and ignores all

read/write commands for the duration of the RESET#

pulse. The device also resets the internal state ma-

chine to reading array data. The operation that was in-

terrupted should be reinitiated once the device is

ready to accept another command sequence, to en-

sure data integrity.

Refer to the AC Characteristics tables for RESET# pa-

rameters and to Figure 15 for the timing diagram.

Output Disable Mode

When the OE# input is at V_IH, output from the device is

disabled. The output pins are placed in the high

impedance state.

Current is reduced for the duration of the RESET#

pulse. When RESET# is held at V_SS±0.3 V, the device

Table 2. Am29DL640G Sector Architecture

Sector Address

Sector Size

(Kbytes/Kwords)

(x8)

Address Range

(x16)

Address Range

Bank

Sector

A21–A12

SA0

SA1

0000000000

0000000001

0000000010

0000000011

0000000100

0000000101

0000000110

0000000111

0000001xxx

0000010xxx

0000011xxx

0000100xxx

0000101xxx

0000110xxx

0000111xxx

0001000xxx

0001001xxx

0001010xxx

0001011xxx

0001100xxx

0001101xxx

0001111xxx

8/4

000000h–001FFFh

002000h–003FFFh

004000h–005FFFh

006000h–007FFFh

008000h–009FFFh

00A000h–00BFFFh

00C000h–00DFFFh

00E000h–00FFFFFh

010000h–01FFFFh

020000h–02FFFFh

030000h–03FFFFh

040000h–04FFFFh

050000h–05FFFFh

060000h–06FFFFh

070000h–07FFFFh

080000h–08FFFFh

090000h–09FFFFh

0A0000h–0AFFFFh

0B0000h–0BFFFFh

0C0000h–0CFFFFh

0D0000h–0DFFFFh

0E0000h–0EFFFFh

0F0000h–0FFFFFh

00000h–00FFFh

01000h–01FFFh

02000h–02FFFh

03000h–03FFFh

04000h–04FFFh

05000h–05FFFh

06000h–06FFFh

07000h–07FFFh

08000h–0FFFFh

10000h–17FFFh

18000h–1FFFFh

20000h–27FFFh

28000h–2FFFFh

30000h–37FFFh

38000h–3FFFFh

40000h–47FFFh

48000h–4FFFFh

50000h–57FFFh

58000h–5FFFFh

60000h–67FFFh

68000h–6FFFFh

70000h–77FFFh

78000h–7FFFFh

SA2

8/4

SA3

8/4

SA4

8/4

SA5

8/4

SA6

8/4

SA7

8/4

SA8

64/32

SA9

SA10

SA11

SA12

SA13

SA14

SA15

SA16

SA17

SA18

SA19

SA20

SA21

SA22

Bank 1

June 6, 2005

Am29DL640G

11

Table 2. Am29DL640G Sector Architecture (Continued)

Sector Address

A21–A12

Sector Size

(Kbytes/Kwords)

(x8)

(x16)

Address Range

Bank

Sector

Address Range

SA23

SA24

SA25

SA26

SA27

SA28

SA29

SA30

SA31

SA32

SA33

SA34

SA35

SA36

SA37

SA38

SA39

SA40

SA41

SA42

SA43

SA44

SA45

SA46

SA47

SA48

SA49

SA50

SA51

SA52

SA53

SA54

SA55

SA56

SA57

SA58

SA59

SA60

SA61

SA62

SA63

SA64

SA65

SA66

SA67

SA68

SA69

SA70

0010000xxx

0010001xxx

0010010xxx

0010011xxx

0010100xxx

0010101xxx

0010110xxx

0010111xxx

0011000xxx

0011001xxx

0011010xxx

0011011xxx

0011000xxx

0011101xxx

0011110xxx

0011111xxx

0100000xxx

0100001xxx

0100010xxx

0101011xxx

0100100xxx

0100101xxx

0100110xxx

0100111xxx

0101000xxx

0101001xxx

0101010xxx

0101011xxx

0101100xxx

0101101xxx

0101110xxx

0101111xxx

0110000xxx

0110001xxx

0110010xxx

0110011xxx

0100100xxx

0110101xxx

0110110xxx

0110111xxx

0111000xxx

0111001xxx

0111010xxx

0111011xxx

0111100xxx

0111101xxx

0111110xxx

0111111xxx

64/32

100000h–00FFFFh

110000h–11FFFFh

120000h–12FFFFh

130000h–13FFFFh

140000h–14FFFFh

150000h–15FFFFh

160000h–16FFFFh

170000h–17FFFFh

180000h–18FFFFh

190000h–19FFFFh

1A0000h–1AFFFFh

1B0000h–1BFFFFh

1C0000h–1CFFFFh

1D0000h–1DFFFFh

1E0000h–1EFFFFh

1F0000h–1FFFFFh

200000h–20FFFFh

210000h–21FFFFh

220000h–22FFFFh

230000h–23FFFFh

240000h–24FFFFh

250000h–25FFFFh

260000h–26FFFFh

270000h–27FFFFh

280000h–28FFFFh

290000h–29FFFFh

2A0000h–2AFFFFh

2B0000h–2BFFFFh

2C0000h–2CFFFFh

2D0000h–2DFFFFh

2E0000h–2EFFFFh

2F0000h–2FFFFFh

300000h–30FFFFh

310000h–31FFFFh

320000h–32FFFFh

330000h–33FFFFh

340000h–34FFFFh

350000h–35FFFFh

360000h–36FFFFh

370000h–37FFFFh

380000h–38FFFFh

390000h–39FFFFh

3A0000h–3AFFFFh

3B0000h–3BFFFFh

3C0000h–3CFFFFh

3D0000h–3DFFFFh

3E0000h–3EFFFFh

3F0000h–3FFFFFh

80000h–87FFFh

88000h–8FFFFh

90000h–97FFFh

98000h–9FFFFh

A0000h–A7FFFh

A8000h–AFFFFh

B0000h–B7FFFh

B8000h–BFFFFh

C0000h–C7FFFh

C8000h–CFFFFh

D0000h–D7FFFh

D8000h–DFFFFh

E0000h–E7FFFh

E8000h–EFFFFh

F0000h–F7FFFh

F8000h–FFFFFh

F9000h–107FFFh

108000h–10FFFFh

110000h–117FFFh

118000h–11FFFFh

120000h–127FFFh

128000h–12FFFFh

130000h–137FFFh

138000h–13FFFFh

140000h–147FFFh

148000h–14FFFFh

150000h–157FFFh

158000h–15FFFFh

160000h–167FFFh

168000h–16FFFFh

170000h–177FFFh

178000h–17FFFFh

180000h–187FFFh

188000h–18FFFFh

190000h–197FFFh

198000h–19FFFFh

1A0000h–1A7FFFh

1A8000h–1AFFFFh

1B0000h–1B7FFFh

1B8000h–1BFFFFh

1C0000h–1C7FFFh

1C8000h–1CFFFFh

1D0000h–1D7FFFh

1D8000h–1DFFFFh

1E0000h–1E7FFFh

1E8000h–1EFFFFh

1F0000h–1F7FFFh

1F8000h–1FFFFFh

Bank 2

12

Am29DL640G

June 6, 2005

Table 2. Am29DL640G Sector Architecture (Continued)

Sector Address

A21–A12

Sector Size

(Kbytes/Kwords)

(x8)

(x16)

Address Range

Bank

Sector

Address Range

SA71

SA72

SA73

SA74

SA75

SA76

SA77

SA78

SA79

SA80

SA81

SA82

SA83

SA84

SA85

SA86

SA87

SA88

SA89

SA90

SA91

SA92

SA93

SA94

SA95

SA96

SA97

SA98

SA99

SA100

SA101

SA102

SA103

SA104

SA105

SA106

SA107

SA108

SA109

SA110

SA111

SA112

SA113

SA114

SA115

SA116

SA117

SA118

1000000xxx

1000001xxx

1000010xxx

1000011xxx

1000100xxx

1000101xxx

1000110xxx

1000111xxx

1001000xxx

1001001xxx

1001010xxx

1001011xxx

1001100xxx

1001101xxx

1001110xxx

1001111xxx

1010000xxx

1010001xxx

1010010xxx

1010011xxx

1010100xxx

1010101xxx

1010110xxx

1010111xxx

1011000xxx

1011001xxx

1011010xxx

1011011xxx

1011100xxx

1011101xxx

1011110xxx

1011111xxx

1100000xxx

1100001xxx

1100010xxx

1100011xxx

1100100xxx

1100101xxx

1100110xxx

1100111xxx

1101000xxx

1101001xxx

1101010xxx

1101011xxx

1101100xxx

1101101xxx

1101110xxx

1101111xxx

64/32

400000h–40FFFFh

410000h–41FFFFh

420000h–42FFFFh

430000h–43FFFFh

440000h–44FFFFh

450000h–45FFFFh

460000h–46FFFFh

470000h–47FFFFh

480000h–48FFFFh

490000h–49FFFFh

4A0000h–4AFFFFh

4B0000h–4BFFFFh

4C0000h–4CFFFFh

4D0000h–4DFFFFh

4E0000h–4EFFFFh

4F0000h–4FFFFFh

500000h–50FFFFh

510000h–51FFFFh

520000h–52FFFFh

530000h–53FFFFh

540000h–54FFFFh

550000h–55FFFFh

560000h–56FFFFh

570000h–57FFFFh

580000h–58FFFFh

590000h–59FFFFh

5A0000h–5AFFFFh

5B0000h–5BFFFFh

5C0000h–5CFFFFh

5D0000h–5DFFFFh

5E0000h–5EFFFFh

5F0000h–5FFFFFh

600000h–60FFFFh

610000h–61FFFFh

620000h–62FFFFh

630000h–63FFFFh

640000h–64FFFFh

650000h–65FFFFh

660000h–66FFFFh

670000h–67FFFFh

680000h–68FFFFh

690000h–69FFFFh

6A0000h–6AFFFFh

6B0000h–6BFFFFh

6C0000h–6CFFFFh

6D0000h–6DFFFFh

6E0000h–6EFFFFh

6F0000h–6FFFFFh

200000h–207FFFh

208000h–20FFFFh

210000h–217FFFh

218000h–21FFFFh

220000h–227FFFh

228000h–22FFFFh

230000h–237FFFh

238000h–23FFFFh

240000h–247FFFh

248000h–24FFFFh

250000h–257FFFh

258000h–25FFFFh

260000h–267FFFh

268000h–26FFFFh

270000h–277FFFh

278000h–27FFFFh

280000h–28FFFFh

288000h–28FFFFh

290000h–297FFFh

298000h–29FFFFh

2A0000h–2A7FFFh

2A8000h–2AFFFFh

2B0000h–2B7FFFh

2B8000h–2BFFFFh

2C0000h–2C7FFFh

2C8000h–2CFFFFh

2D0000h–2D7FFFh

2D8000h–2DFFFFh

2E0000h–2E7FFFh

2E8000h–2EFFFFh

2F0000h–2FFFFFh

2F8000h–2FFFFFh

300000h–307FFFh

308000h–30FFFFh

310000h–317FFFh

318000h–31FFFFh

320000h–327FFFh

328000h–32FFFFh

330000h–337FFFh

338000h–33FFFFh

340000h–347FFFh

348000h–34FFFFh

350000h–357FFFh

358000h–35FFFFh

360000h–367FFFh

368000h–36FFFFh

370000h–377FFFh

378000h–37FFFFh

Bank 3

June 6, 2005

Am29DL640G

13

Table 2. Am29DL640G Sector Architecture (Continued)

Sector Address

A21–A12

Sector Size

(Kbytes/Kwords)

(x8)

(x16)

Address Range

Bank

Sector

Address Range

SA119

SA120

SA121

SA122

SA123

SA124

SA125

SA126

SA127

SA128

SA129

SA130

SA131

SA132

SA133

SA134

SA135

SA136

SA137

SA138

SA139

SA140

SA141

1110000xxx

1110001xxx

1110010xxx

1110011xxx

1110100xxx

1110101xxx

1110110xxx

1110111xxx

1111000xxx

1111001xxx

1111010xxx

1111011xxx

1111100xxx

1111101xxx

1111110xxx

1111111000

1111111001

1111111010

1111111011

1111111100

1111111101

1111111110

1111111111

64/32

8/4

700000h–70FFFFh

710000h–71FFFFh

720000h–72FFFFh

730000h–73FFFFh

740000h–74FFFFh

750000h–75FFFFh

760000h–76FFFFh

770000h–77FFFFh

780000h–78FFFFh

790000h–79FFFFh

7A0000h–7AFFFFh

7B0000h–7BFFFFh

7C0000h–7CFFFFh

7D0000h–7DFFFFh

7E0000h–7EFFFFh

7F0000h–7F1FFFh

7F2000h–7F3FFFh

7F4000h–7F5FFFh

7F6000h–7F7FFFh

7F8000h–7F9FFFh

7FA000h–7FBFFFh

7FC000h–7FDFFFh

7FE000h–7FFFFFh

380000h–387FFFh

388000h–38FFFFh

390000h–397FFFh

398000h–39FFFFh

3A0000h–3A7FFFh

3A8000h–3AFFFFh

3B0000h–3B7FFFh

3B8000h–3BFFFFh

3C0000h–3C7FFFh

3C8000h–3CFFFFh

3D0000h–3D7FFFh

3D8000h–3DFFFFh

3E0000h–3E7FFFh

3E8000h–3EFFFFh

3F0000h–3F7FFFh

3F8000h–3F8FFFh

3F9000h–3F9FFFh

3FA000h–3FAFFFh

3FB000h–3FBFFFh

3FC000h–3FCFFFh

3FD000h–3FDFFFh

3FE000h–3FEFFFh

3FF000h–3FFFFFh

Bank 4

8/4

Note: The address range is A21:A-1 in byte mode (BYTE#=V_IL) or A21:A0 in word mode (BYTE#=V_IH).

Table 3. Bank Address

Bank

A21–A19

000

1

2

3

4

001, 010, 011

100, 101, 110

111

Table 4. SecSi^TMSector Addresses

(x8)

(x16)

Device

Am29DL640G

Sector Size

Address Range

256 bytes

000000h–0000FFh

00000h–0007Fh

Table 2). Table 5 shows the remaining address bits

that are don’t care. When all necessary bits have been

set as required, the programming equipment may then

read the corresponding identifier code on DQ7–DQ0.

However, the autoselect codes can also be accessed

in-system through the command register, for instances

when the Am29DL640 is erased or programmed in a

system without access to high voltage on the A9 pin.

The command sequence is illustrated in Table 12.

Note that if a Bank Address (BA) on address bits A21,

A20, and A19 is asserted during the third write cycle of

the autoselect command, the host system can read

autoselect data from that bank and then immediately

read array data from the other bank, without exiting the

autoselect mode.

Autoselect Mode

The autoselect mode provides manufacturer and de-

vice identification, and sector protection verification,

through identifier codes output on DQ7–DQ0. This

mode is primarily intended for programming equip-

ment to automatically match a device to be pro-

grammed with its corresponding programming

algorithm. However, the autoselect codes can also be

accessed in-system through the command register.

When using programming equipment, the autoselect

mode requires V_IDon address pin A9. Address pins

must be as shown in Table 5. In addition, when verify-

ing sector protection, the sector address must appear

on the appropriate highest order address bits (see

14

Am29DL640G

June 6, 2005

To access the autoselect codes in-system, the host

system can issue the autoselect command via the

command register, as shown in Table 12. This method

does not require V_ID. Refer to the Autoselect Com-

mand Sequence section for more information.

Table 5. Am29DL640G Autoselect Codes, (High Voltage Method)

DQ15 to DQ0

A21 A11

to to

A8

to

A5

to

DQ7

to

BYTE# BYTE#

Description

CE# OE# WE# A12 A10 A9 A7 A6 A4 A3 A2 A1 A0

= V_IH

= V_IL

DQ0

Manufacturer ID:

AMD

V_ID

L

H

BA

X

L

X

L

X

01h

Read Cycle 1

Read Cycle 2

Read Cycle 3

L

H

L

H

L

H

L

22h

7Eh

02h

01h

V_ID

L

H

X

H

Sector Protection

Verification

01h (protected),

00h (unprotected)

V_ID

L

H

SA

BA

X

L

X

H

L

X

81h (factory locked),

01h (not factory

locked)

SecSi Indicator Bit

(DQ7)

L

H

Legend: L = Logic Low = V_IL, H = Logic High = V_IH, BA = Bank Address, SA = Sector Address, X = Don’t care

.

June 6, 2005

Am29DL640G

15

Sector/Sector Block Protection and

Unprotection

Sector/

Sector Block Size

Sector

A21–A12

SA99–SA102

SA103–SA106

SA107–SA110

SA111–SA114

SA115–SA118

SA119–SA122

SA123–SA126

SA127–SA130

10111XXXXX

11000XXXXX

11001XXXXX

11010XXXXX

11011XXXXX

11100XXXXX

11101XXXXX

11110XXXXX

256 (4x64) Kbytes

(Note: For the following discussion, the term “sector”

applies to both sectors and sector blocks. A sector

block consists of two or more adjacent sectors that are

protected or unprotected at the same time (see Table

6).

The hardware sector protection feature disables both

program and erase operations in any sector. The hard-

ware sector unprotection feature re-enables both pro-

gram and erase operations in previously protected

sectors. Sector protection/unprotection can be imple-

mented via two methods.

1111100XXX,

1111101XXX,

1111110XXX

SA131–SA133

192 (3x64) Kbytes

SA134

SA135

SA136

SA137

SA138

SA139

SA140

SA141

1111111000

1111111001

1111111010

1111111011

1111111100

1111111101

1111111111

8 Kbytes

Table 6. Am29DL640G Boot Sector/Sector Block

Addresses for Protection/Unprotection

Sector/

Sector

SA0

SA1

SA2

SA3

SA4

SA5

SA6

SA7

A21–A12

Sector Block Size

0000000000

0000000001

0000000010

0000000011

0000000100

0000000101

0000000110

0000000111

8 Kbytes

Sector protection/sector unprotection requires V_IDon

the RESET# pin only, and can be implemented either

in-system or via programming equipment. Figure 2

shows the algorithms and Figure 26 shows the timing

diagram. For sector unprotect, all unprotected sectors

must first be protected prior to the first sector unpro-

tect write cycle. Note that the sector unprotect algo-

rithm unprotects all sectors in parallel. All previously

protected sectors must be individually re-protected. To

change data in protected sectors efficiently, the tem-

porary sector unprotect function is available. See

“Temporary Sector Unprotect”.

8 Kbytes

0000001XXX,

0000010XXX,

0000011XXX,

SA8–SA10

192 (3x64) Kbytes

SA11–SA14

SA15–SA18

SA19–SA22

SA23–SA26

SA27-SA30

SA31-SA34

SA35-SA38

SA39-SA42

SA43-SA46

SA47-SA50

SA51-SA54

SA55–SA58

SA59–SA62

SA63–SA66

SA67–SA70

SA71–SA74

SA75–SA78

SA79–SA82

SA83–SA86

SA87–SA90

SA91–SA94

SA95–SA98

00001XXXXX

00010XXXXX

00011XXXXX

00100XXXXX

00101XXXXX

00110XXXXX

00111XXXXX

01000XXXXX

01001XXXXX

01010XXXXX

01011XXXXX

01100XXXXX

01101XXXXX

01110XXXXX

01111XXXXX

10000XXXXX

10001XXXXX

10010XXXXX

10011XXXXX

10100XXXXX

10101XXXXX

10110XXXXX

256 (4x64) Kbytes

The device is shipped with all sectors unprotected.

AMD offers the option of programming and protecting

sectors at its factory prior to shipping the device

through AMD’s ExpressFlash™ Service. Contact an

AMD representative for details.

It is possible to determine whether a sector is pro-

tected or unprotected. See the Autoselect Mode sec-

tion for details.

Write Protect (WP#)

The Write Protect function provides a hardware

method of protecting without using V_ID. This function is

one of two provided by the WP#/ACC pin.

If the system asserts V_ILon the WP#/ACC pin, the de-

vice disables program and erase functions in sectors

0, 1, 140, and 141, independently of whether those

sectors were protected or unprotected using the

method described in “Sector/Sector Block Protection

and Unprotection”.

16

Am29DL640G

June 6, 2005

If the system asserts V_IHon the WP#/ACC pin, the de-

vice reverts to whether sectors 0, 1, 140, and 141

were last set to be protected or unprotected. That is,

sector protection or unprotection for these sectors de-

pends on whether they were last protected or unpro-

tected using the method described in “Sector/Sector

Block Protection and Unprotection”.

Temporary Sector Unprotect

(Note: For the following discussion, the term “sector”

applies to both sectors and sector blocks. A sector

block consists of two or more adjacent sectors that are

protected or unprotected at the same time (see Table

6).

This feature allows temporary unprotection of previ-

ously protected sectors to change data in-system. The

Sector Unprotect mode is activated by setting the RE-

SET# pin to V_ID. During this mode, formerly protected

sectors can be programmed or erased by selecting the

sector addresses. Once V_IDis removed from the RE-

SET# pin, all the previously protected sectors are

protected again. Figure 1 shows the algorithm, and

Figure 25 shows the timing diagrams, for this feature.

If the WP#/ACC pin is at V_IL, sectors 0, 1, 140, and

141 will remain protected during the Temporary sector

Unprotect mode.

Note that the WP#/ACC pin must not be left floating or

unconnected; inconsistent behavior of the device may

result.

Table 7. WP#/ACC Modes

Device

Mode

WP# Input

Voltage

Disables programming and erasing in

SA0, SA1, SA140, and SA141

V_IL

V_IH

Enables programming and erasing in

SA0, SA1, SA140, and SA141

Enables accelerated programming

(ACC). See “Accelerated Program

Operation” on page 10.

V_HH

START

RESET# = V_ID

(Note 1)

Perform Erase or

Program Operations

RESET# = V_IH

Temporary Sector

Unprotect Completed

(Note 2)

Notes:

1. All protected sectors unprotected (If WP#/ACC = V_IL,

sectors 0, 1, 140, and 141 will remain protected).

2. All previously protected sectors are protected once

again.

Figure 1. Temporary Sector Unprotect Operation

June 6, 2005

Am29DL640G

17

START

Protect all sectors:

The indicated portion

of the sector protect

algorithm must be

performed for all

PLSCNT = 1

RESET# = V_ID

unprotected sectors

prior to issuing the

first sector

Wait 1 μs

unprotect address

No

First Write

No

First Write

Cycle = 60h?

Temporary Sector

Unprotect Mode

Temporary Sector

Unprotect Mode

Cycle = 60h?

Yes

Set up sector

address

No

All sectors

protected?

Sector Protect:

Write 60h to sector

address with

A6 = 0, A1 = 1,

A0 = 0

Yes

Set up first sector

address

Sector Unprotect:

Wait 150 µs

Write 60h to sector

address with

A6 = 1, A1 = 1,

A0 = 0

Verify Sector

Protect: Write 40h

to sector address

with A6 = 0,

Reset

PLSCNT = 1

Increment

PLSCNT

Wait 15 ms

A1 = 1, A0 = 0

Verify Sector

Unprotect: Write

40h to sector

address with

A6 = 1, A1 = 1,

A0 = 0

Read from

sector address

with A6 = 0,

A1 = 1, A0 = 0

Increment

PLSCNT

No

PLSCNT

= 25?

Read from

sector address

with A6 = 1,

Data = 01h?

Yes

A1 = 1, A0 = 0

No

Yes

Set up

next sector

address

Yes

No

PLSCNT

= 1000?

Protect another

sector?

Data = 00h?

Yes

Device failed

No

Yes

Remove V_ID

from RESET#

No

Last sector

verified?

Device failed

Write reset

command

Yes

Remove V_ID

Sector Unprotect

Algorithm

from RESET#

Sector Protect

Algorithm

Sector Protect

complete

Write reset

command

Sector Unprotect

complete

Figure 2. In-System Sector Protect/Unprotect Algorithms

Am29DL640G

18

June 6, 2005

programmed in the next 8 words at addresses

000008h–00000Fh (or 000010h–00001Fh in byte

mode). The device is available preprogrammed with

one of the following:

SecSi™ (Secured Silicon) Sector

Flash Memory Region

The SecSi (Secured Silicon) Sector feature provides a

Flash memory region that enables permanent part

identification through an Electronic Serial Number

(ESN). The SecSi Sector is 256 bytes in length, and

uses a SecSi Sector Indicator Bit (DQ7) to indicate

whether or not the SecSi Sector is locked when

shipped from the factory. This bit is permanently set at

the factory and cannot be changed, which prevents

cloning of a factory locked part. This ensures the secu-

rity of the ESN once the product is shipped to the field.

■ A random, secure ESN only

■ Customer code through the ExpressFlash service

■ Both a random, secure ESN and customer code

through the ExpressFlash service.

Customers may opt to have their code programmed by

AMD through the AMD ExpressFlash service. AMD

programs the customer’s code, with or without the ran-

dom ESN. The devices are then shipped from AMD’s

factory with the SecSi Sector permanently locked.

Contact an AMD representative for details on using

AMD’s ExpressFlash service.

AMD offers the device with the SecSi Sector either

factory locked or customer lockable. The fac-

tory-locked version is always protected when shipped

from the factory, and has the SecSi (Secured Silicon)

Sector Indicator Bit permanently set to a “1.” The cus-

tomer-lockable version is shipped with the SecSi Sec-

tor unprotected, allowing customers to utilize the that

sector in any manner they choose. The customer-lock-

able version has the SecSi (Secured Silicon) Sector

Indicator Bit permanently set to a “0.” Thus, the SecSi

Sector Indicator Bit prevents customer-lockable de-

vices from being used to replace devices that are fac-

tory locked.

Customer Lockable: SecSi Sector NOT

Programmed or Protected at the Factory

If the security feature is not required, the SecSi Sector

can be treated as an additional Flash memory space.

The SecSi Sector can be read any number of times,

but can be programmed and locked only once. Note

that the accelerated programming (ACC) and unlock

bypass functions are not available when programming

the SecSi Sector.

The system accesses the SecSi Sector Secure

through a command sequence (see “Enter SecSi™

Sector/Exit SecSi Sector Command Sequence”). After

the system has written the Enter SecSi Sector com-

mand sequence, it may read the SecSi Sector by

using the addresses normally occupied by the boot

sectors. This mode of operation continues until the

system issues the Exit SecSi Sector command se-

quence, or until power is removed from the device. On

power-up, or following a hardware reset, the device re-

verts to sending commands to the first 256 bytes of

Sector 0. Note that the ACC function and unlock by-

pass modes are not available when the SecSi Sector

is enabled.

The SecSi Sector area can be protected using one of

the following procedures:

■ Write the three-cycle Enter SecSi Sector Region

command sequence, and then follow the in-system

sector protect algorithm as shown in Figure 2, ex-

cept that RESET# may be at either V_IHor V_ID. This

allows in-system protection of the SecSi Sector Re-

gion without raising any device pin to a high voltage.

Note that this method is only applicable to the SecSi

Sector.

■ To verify the protect/unprotect status of the SecSi

Sector, follow the algorithm shown in Figure 3.

Once the SecSi Sector is locked and verified, the sys-

tem must write the Exit SecSi Sector Region com-

mand sequence to return to reading and writing the

remainder of the array.

Factory Locked: SecSi Sector Programmed and

Protected At the Factory

In a factory locked device, the SecSi Sector is pro-

tected when the device is shipped from the factory.

The SecSi Sector cannot be modified in any way. The

device is preprogrammed with both a random number

and a secure ESN. The 8-word random number is at

addresses 000000h–000007h in word mode (or

000000h–00000Fh in byte mode). The secure ESN is

The SecSi Sector lock must be used with caution

since, once locked, there is no procedure available for

unlocking the SecSi Sector area and none of the bits

in the SecSi Sector memory space can be modified in

any way.

June 6, 2005

Am29DL640G

19

CE# and WE# must be a logical zero while OE# is a

logical one.

Power-Up Write Inhibit

START

If WE# = CE# = V_ILand OE# = V_IHduring power up,

the device does not accept commands on the rising

edge of WE#. The internal state machine is automati-

cally reset to the read mode on power-up.

If data = 00h,

SecSi Sector is

unprotected.

If data = 01h,

SecSi Sector is

protected.

RESET# =

V_IHor V_ID

Wait 1 μs

COMMON FLASH MEMORY INTERFACE

(CFI)

Write 60h to

any address

Remove V_IHor V_ID

from RESET#

The Common Flash Interface (CFI) specification out-

lines device and host system software interrogation

handshake, which allows specific vendor-specified

software algorithms to be used for entire families of

devices. Software support can then be device-inde-

pendent, JEDEC ID-independent, and forward- and

backward-compatible for the specified flash device

families. Flash vendors can standardize their existing

interfaces for long-term compatibility.

Write 40h to SecSi

Sector address

with A6 = 0,

Write reset

command

A1 = 1, A0 = 0

SecSi Sector

Protect Verify

complete

Read from SecSi

Sector address

with A6 = 0,

A1 = 1, A0 = 0

This device enters the CFI Query mode when the sys-

tem writes the CFI Query command, 98h, to address

55h in word mode (or address AAh in byte mode), any

time the device is ready to read array data. The

system can read CFI information at the addresses

given in Tables 8–11. To terminate reading CFI data,

the system must write the reset command.The CFI

Query mode is not accessible when the device is exe-

cuting an Embedded Program or embedded Erase al-

gorithm.

Figure 3. SecSi Sector Protect Verify

Hardware Data Protection

The command sequence requirement of unlock cycles

for programming or erasing provides data protection

against inadvertent writes (refer to Table 12 for com-

mand definitions). In addition, the following hardware

data protection measures prevent accidental erasure

or programming, which might otherwise be caused by

spurious system level signals during V_CCpower-up

and power-down transitions, or from system noise.

The system can also write the CFI query command

when the device is in the autoselect mode. The device

enters the CFI query mode, and the system can read

CFI data at the addresses given in Tables 8–11. The

system must write the reset command to return the

device to reading array data.

Low V_CCWrite Inhibit

For further information, please refer to the CFI Specifi-

cation and CFI Publication 100, available via the World

Wide Web at http://www.amd.com/flash/cfi. Alterna-

tively, contact an AMD representative for copies of

these documents.

When V_CCis less than V_LKO, the device does not ac-

cept any write cycles. This protects data during V_CC

power-up and power-down. The command register

and all internal program/erase circuits are disabled,

and the device resets to the read mode. Subsequent

writes are ignored until V_CCis greater than V_LKO. The

system must provide the proper signals to the control

pins to prevent unintentional writes when V_CCis

greater than V_LKO

.

Write Pulse “Glitch” Protection

Noise pulses of less than 5 ns (typical) on OE#, CE#

or WE# do not initiate a write cycle.

Logical Inhibit

Write cycles are inhibited by holding any one of OE# =

V_IL, CE# = V_IHor WE# = V_IH. To initiate a write cycle,

20

Am29DL640G

June 6, 2005

Table 8. CFI Query Identification String

Addresses

(Word Mode)

(Byte Mode)

Data

Description

10h

11h

12h

20h

22h

24h

0051h

0052h

0059h

Query Unique ASCII string “QRY”

13h

14h

26h

28h

0002h

0000h

Primary OEM Command Set

15h

16h

2Ah

2Ch

0040h

0000h

Address for Primary Extended Table

17h

18h

2Eh

30h

0000h

Alternate OEM Command Set (00h = none exists)

Address for Alternate OEM Extended Table (00h = none exists)

19h

1Ah

32h

34h

0000h

Table 9. System Interface String

Addresses

(Word Mode)

(Byte Mode)

Data Description

V_CCMin. (write/erase)

0027h

1Bh

1Ch

36h

38h

D7–D4: volt, D3–D0: 100 millivolt

V_CCMax. (write/erase)

0036h

D7–D4: volt, D3–D0: 100 millivolt

1Dh

1Eh

1Fh

20h

21h

22h

23h

24h

25h

26h

3Ah

3Ch

3Eh

40h

42h

44h

46h

48h

4Ah

4Ch

0000h

0004h

0000h

000Ah

0000h

0005h

0000h

0004h

0000h

V_PPMin. voltage (00h = no V_PPpin present)

V

_PPMax. voltage (00h = no V_PPpin present)

Typical timeout per single byte/word write 2^Nµs

Typical timeout for Min. size buffer write 2^Nµs (00h = not supported)

Typical timeout per individual block erase 2^Nms

Typical timeout for full chip erase 2^Nms (00h = not supported)

Max. timeout for byte/word write 2^Ntimes typical

Max. timeout for buffer write 2^Ntimes typical

Max. timeout per individual block erase 2^Ntimes typical

Max. timeout for full chip erase 2^Ntimes typical (00h = not supported)

June 6, 2005

Am29DL640G

21

Table 10. Device Geometry Definition

Addresses

(Word Mode)

(Byte Mode)

Data

Description

27h

4Eh

0017h

Device Size = 2^Nbyte

28h

29h

50h

52h

0002h

0000h

Flash Device Interface description (refer to CFI publication 100)

2Ah

2Bh

54h

56h

0000h

Max. number of byte in multi-byte write = 2^N

(00h = not supported)

2Ch

58h

0003h

Number of Erase Block Regions within device

2Dh

2Eh

2Fh

30h

5Ah

5Ch

5Eh

60h

0007h

0000h

0020h

0000h

Erase Block Region 1 Information

(refer to the CFI specification or CFI publication 100)

31h

32h

33h

34h

62h

64h

66h

68h

007Dh

0000h

0001h

Erase Block Region 2 Information

(refer to the CFI specification or CFI publication 100)

35h

36h

37h

38h

6Ah

6Ch

6Eh

70h

0007h

0000h

0020h

0000h

Erase Block Region 3 Information

(refer to the CFI specification or CFI publication 100)

39h

3Ah

3Bh

3Ch

72h

74h

76h

78h

0000h

Erase Block Region 4 Information

(refer to the CFI specification or CFI publication 100)

22

Am29DL640G

June 6, 2005

Table 11. Primary Vendor-Specific Extended Query

Addresses

(Word Mode)

(Byte Mode)

Data

Description

40h

41h

42h

80h

82h

84h

0050h

0052h

0049h

Query-unique ASCII string “PRI”

43h

44h

86h

88h

0031h

0033h

Major version number, ASCII (reflects modifications to the silicon)

Minor version number, ASCII (reflects modifications to the CFI table)

Address Sensitive Unlock (Bits 1-0)

0 = Required, 1 = Not Required

45h

8Ah

0004h

Silicon Revision Number (Bits 7-2)

Erase Suspend

0 = Not Supported, 1 = To Read Only, 2 = To Read & Write

46h

47h

48h

8Ch

8Eh

90h

0002h

0001h

Sector Protect

0 = Not Supported, X = Number of sectors in per group

Sector Temporary Unprotect

00 = Not Supported, 01 = Supported

Sector Protect/Unprotect scheme

49h

92h

0004h

01 =29F040 mode, 02 = 29F016 mode, 03 = 29F400, 04 = 29LV800

mode

Simultaneous Operation

00 = Not Supported, X = Number of Sectors (excluding Bank 1)

4Ah

4Bh

4Ch

94h

96h

98h

0077h

0000h

Burst Mode Type

00 = Not Supported, 01 = Supported

Page Mode Type

00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page

ACC (Acceleration) Supply Minimum

4Dh

4Eh

9Ah

9Ch

0085h

0095h

00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV

ACC (Acceleration) Supply Maximum

00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV

Top/Bottom Boot Sector Flag

00h = Uniform device, 01h = 8 x 8 Kbyte Sectors, Top And Bottom Boot

with Write Protect, 02h = Bottom Boot Device, 03h = Top Boot Device,

04h = Both Top and Bottom

4Fh

9Eh

0004h

Program Suspend

50h

57h

58h

59h

5Ah

5Bh

A0h

AEh

B0h

B2h

B4h

B6h

0001h

0004h

0017h

0030h

0017h

0 = Not supported, 1 = Supported, but not tested

Bank Organization

00 = Data at 4Ah is zero, X = Number of Banks

Bank 1 Region Information

X = Number of Sectors in Bank 1

Bank 2 Region Information

X = Number of Sectors in Bank 2

Bank 3 Region Information

X = Number of Sectors in Bank 3

Bank 4 Region Information

X = Number of Sectors in Bank 4

June 6, 2005

Am29DL640G

23

COMMAND DEFINITIONS

Writing specific address and data commands or se-

quences into the command register initiates device op-

erations. Table 12 defines the valid register command

sequences. Writing incorrect address and data values

or writing them in the improper sequence may place

the device to an unknown state. A reset command is

required to return the device to read array data.

before programming begins. This resets the bank to

which the system was writing to the read mode. If the

program command sequence is written to a bank that

is in the Erase Suspend mode, writing the reset

command returns that bank to the erase-sus-

pend-read mode. Once programming begins, however,

the device ignores reset commands until the operation

is complete.

All addresses are latched on the falling edge of WE#

or CE#, whichever happens later. All data is latched on

the rising edge of WE# or CE#, whichever happens

first. Refer to the AC Characteristics section for timing

diagrams.

The reset command may be written between the se-

quence cycles in an autoselect command sequence.

Once in the autoselect mode, the reset command

must be written to return to the read mode. If a bank

entered the autoselect mode while in the Erase Sus-

pend mode, writing the reset command returns that

bank to the erase-suspend-read mode.

Reading Array Data

The device is automatically set to reading array data

after device power-up. No commands are required to

retrieve data. Each bank is ready to read array data

after completing an Embedded Program or Embedded

Erase algorithm.

If DQ5 goes high during a program or erase operation,

writing the reset command returns the banks to the

read mode (or erase-suspend-read mode if that bank

was in Erase Suspend).

After the device accepts an Erase Suspend command,

the corresponding bank enters the erase-sus-

pend-read mode, after which the system can read

data from any non-erase-suspended sector within the

same bank. The system can read array data using the

standard read timing, except that if it reads at an ad-

dress within erase-suspended sectors, the device out-

puts status data. After completing a programming

operation in the Erase Suspend mode, the system

may once again read array data with the same excep-

tion. See the Erase Suspend/Erase Resume Com-

mands section for more information.

Autoselect Command Sequence

The autoselect command sequence allows the host

system to access the manufacturer and device codes,

and determine whether or not a sector is protected.

The autoselect command sequence may be written to

an address within a bank that is either in the read or

erase-suspend-read mode. The autoselect command

may not be written while the device is actively pro-

gramming or erasing in the other bank.

The autoselect command sequence is initiated by first

writing two unlock cycles. This is followed by a third

write cycle that contains the bank address and the au-

toselect command. The bank then enters the autose-

lect mode. The system may read any number of

autoselect codes without reinitiating the command se-

quence.

The system must issue the reset command to return a

bank to the read (or erase-suspend-read) mode if DQ5

goes high during an active program or erase opera-

tion, or if the bank is in the autoselect mode. See the

next section, Reset Command, for more information.

See also Requirements for Reading Array Data in the

Device Bus Operations section for more information.

The Read-Only Operations table provides the read pa-

rameters, and Figure 14 shows the timing diagram.

Table 12 shows the address and data requirements.

To determine sector protection information, the system

must write to the appropriate bank address (BA) and

sector address (SA). Table 2 shows the address range

and bank number associated with each sector.

Reset Command

The system must write the reset command to return to

the read mode (or erase-suspend-read mode if the

bank was previously in Erase Suspend).

Writing the reset command resets the banks to the

read or erase-suspend-read mode. Address bits are

don’t cares for this command.

Enter SecSi™ Sector/Exit SecSi Sector

Command Sequence

The reset command may be written between the se-

quence cycles in an erase command sequence before

erasing begins. This resets the bank to which the sys-

tem was writing to the read mode. Once erasure be-

gins, however, the device ignores reset commands

until the operation is complete.

The SecSi Sector region provides a secured data area

containing a random, sixteen-byte electronic serial

number (ESN). The system can access the SecSi

Sector region by issuing the three-cycle Enter SecSi

Sector command sequence. The device continues to

access the SecSi Sector region until the system is-

The reset command may be written between the

sequence cycles in a program command sequence

24

Am29DL640G

June 6, 2005

sues the four-cycle Exit SecSi Sector command se-

quence. The Exit SecSi Sector command sequence

returns the device to normal operation. The SecSi

Sector is not accessible when the device is executing

an Embedded Program or embedded Erase algorithm.

Table 12 shows the address and data requirements for

both command sequences. See also “SecSi™ (Se-

cured Silicon) Sector Flash Memory Region” for further

information. Note that the ACC function and unlock by-

pass modes are not available when the SecSi Sector

is enabled.

DQ6 status bits to indicate the operation was success-

ful. However, a succeeding read will show that the

data is still “0.” Only erase operations can convert a “0”

to a “1.”

Unlock Bypass Command Sequence

The unlock bypass feature allows the system to pro-

gram bytes or words to a bank faster than using the

standard program command sequence. The unlock

bypass command sequence is initiated by first writing

two unlock cycles. This is followed by a third write

cycle containing the unlock bypass command, 20h.

That bank then enters the unlock bypass mode. A

two-cycle unlock bypass program command sequence

is all that is required to program in this mode. The first

cycle in this sequence contains the unlock bypass pro-

gram command, A0h; the second cycle contains the

program address and data. Additional data is pro-

grammed in the same manner. This mode dispenses

with the initial two unlock cycles required in the stan-

dard program command sequence, resulting in faster

total programming time. Table 12 shows the require-

ments for the command sequence.

Byte/Word Program Command Sequence

The system may program the device by word or byte,

depending on the state of the BYTE# pin. Program-

ming is a four-bus-cycle operation. The program com-

mand sequence is initiated by writing two unlock write

cycles, followed by the program set-up command. The

program address and data are written next, which in

turn initiate the Embedded Program algorithm. The

system is not required to provide further controls or

timings. The device automatically provides internally

generated program pulses and verifies the pro-

grammed cell margin. Table 12 shows the address and

data requirements for the byte program command se-

quence.

During the unlock bypass mode, only the Unlock By-

pass Program and Unlock Bypass Reset commands

are valid. To exit the unlock bypass mode, the system

must issue the two-cycle unlock bypass reset com-

mand sequence. See Table 12.

When the Embedded Program algorithm is complete,

that bank then returns to the read mode and ad-

dresses are no longer latched. The system can deter-

mine the status of the program operation by using

DQ7, DQ6, or RY/BY#. Refer to the Write Operation

Status section for information on these status bits.

The device offers accelerated program operations

through the WP#/ACC pin. When the system asserts

V_HHon the WP#/ACC pin, the device automatically en-

ters the Unlock Bypass mode. The system may then

write the two-cycle Unlock Bypass program command

sequence. The device uses the higher voltage on the

WP#/ACC pin to accelerate the operation. Note that

the WP#/ACC pin must not be at V_HHany operation

other than accelerated programming, or device dam-

age may result. In addition, the WP#/ACC pin must not

be left floating or unconnected; inconsistent behavior

of the device may result.

Any commands written to the device during the Em-

bedded Program Algorithm are ignored. Note that a

hardware reset immediately terminates the program

operation. SecSi sector, autoselect, and CFI are not

allowed. The program command sequence should be

reinitiated once that bank has returned to the read

mode, to ensure data integrity. Note that the SecSi

Sector, autoselect, and CFI functions are unavailable

when a program operation is in progress.

Figure 4 illustrates the algorithm for the program oper-

ation. Refer to the Erase and Program Operations

table in the AC Characteristics section for parameters,

and Figure 18 for timing diagrams.

Programming is allowed in any sequence and across

sector boundaries. A bit cannot be programmed

from “0” back to a “1.” Attempting to do so may

cause that bank to set DQ5 = 1, or cause the DQ7 and

June 6, 2005

Am29DL640G

25

Any commands written during the chip erase operation

are ignored. However, note that a hardware reset im-

mediately terminates the erase operation. If that oc-

curs, the chip erase command sequence should be

reinitiated once that bank has returned to reading

array data, to ensure data integrity.

START

Figure 5 illustrates the algorithm for the erase opera-

tion. Refer to the Erase and Program Operations ta-

bles in the AC Characteristics section for parameters,

and Figure 20 section for timing diagrams.

Write Program

Command Sequence

Data Poll

from System

Sector Erase Command Sequence

Embedded

Program

algorithm

in progress

Sector erase is a six bus cycle operation. The sector

erase command sequence is initiated by writing two

unlock cycles, followed by a set-up command. Two ad-

ditional unlock cycles are written, and are then fol-

lowed by the address of the sector to be erased, and

the sector erase command. Table 12 shows the ad-

dress and data requirements for the sector erase com-

mand sequence.

Verify Data?

Yes

No

The device does not require the system to preprogram

prior to erase. The Embedded Erase algorithm auto-

matically programs and verifies the entire memory for

an all zero data pattern prior to electrical erase. The

system is not required to provide any controls or tim-

ings during these operations.

Increment Address

Last Address?

Yes

Programming

Completed

After the command sequence is written, a sector erase

time-out of tSEA µs occurs. During the time-out pe-

riod, additional sector addresses and sector erase

commands may be written. Loading the sector erase

buffer may be done in any sequence, and the number

of sectors may be from one sector to all sectors. The

time between these additional cycles must be less

than 80 µs, otherwise erasure may begin. Any sector

erase address and command following the exceeded

time-out may or may not be accepted. It is recom-

mended that processor interrupts be disabled during

this time to ensure all commands are accepted. The

interrupts can be re-enabled after the last Sector

Erase command is written. Any command other than

Sector Erase or Erase Suspend during the

time-out period resets that bank to the read mode.

No SecSi sector, autoselect, or CFI is available. The

system must rewrite the command sequence and any

additional addresses and commands.

Note: See Table 12 for program command sequence.

Figure 4. Program Operation

Chip Erase Command Sequence

Chip erase is a six bus cycle operation. The chip erase

command sequence is initiated by writing two unlock

cycles, followed by a set-up command. Two additional

unlock write cycles are then followed by the chip erase

command, which in turn invokes the Embedded Erase

algorithm. The device does not require the system to

preprogram prior to erase. The Embedded Erase algo-

rithm automatically preprograms and verifies the entire

memory for an all zero data pattern prior to electrical

erase. The system is not required to provide any con-

trols or timings during these operations. Table 12

shows the address and data requirements for the chip

erase command sequence.

The system can monitor DQ3 to determine if the sec-

tor erase timer has timed out (See the section on DQ3:

Sector Erase Timer.). The time-out begins from the ris-

ing edge of the final WE# pulse in the command

sequence.

When the Embedded Erase algorithm is complete,

that bank returns to the read mode and addresses are

no longer latched. The system can determine the sta-

tus of the erase operation by using DQ7, DQ6, DQ2,

or RY/BY#. Refer to the Write Operation Status sec-

tion for information on these status bits. Note that the

SecSi Sector, autoselect, and CFI functions are un-

available when a program operation is in progress.

When the Embedded Erase algorithm is complete, the

bank returns to reading array data and addresses are

no longer latched. Note that while the Embedded

Erase operation is in progress, the system can read

data from the non-erasing bank. The system can de-

26

Am29DL640G

June 6, 2005

termine the status of the erase operation by reading

DQ7, DQ6, DQ2, or RY/BY# in the erasing bank. Refer

to the Write Operation Status section for information

on these status bits.

for erasure. The bank address is required when writing

this command. This command is valid only during the

sector erase operation, including the tSEA µs time-out

period during the sector erase command sequence.

The Erase Suspend command is ignored if written dur-

ing the chip erase operation or Embedded Program

algorithm.

Once the sector erase operation has begun, only the

Erase Suspend command is valid. All other com-

mands are ignored. However, note that a hardware

reset immediately terminates the erase operation. If

that occurs, the sector erase command sequence

should be reinitiated once that bank has returned to

reading array data, to ensure data integrity.

When the Erase Suspend command is written during

the sector erase operation, the device requires a max-

imum of tSEL µs to suspend the erase operation.

However, when the Erase Suspend command is writ-

ten during the sector erase time-out, the device imme-

diately terminates the time-out period and suspends

the erase operation. Addresses are “don’t-cares”

when writing the Erase suspend command.

Figure 5 illustrates the algorithm for the erase opera-

tion. Refer to the Erase and Program Operations ta-

bles in the AC Characteristics section for parameters,

and Figure 20 section for timing diagrams.

After the erase operation has been suspended, the

bank enters the erase-suspend-read mode. The sys-

tem can read data from or program data to any sector

not selected for erasure. (The device “erase sus-

pends” all sectors selected for erasure.) Reading at

any address within erase-suspended sectors pro-

duces status information on DQ7–DQ0. The system

can use DQ7, or DQ6 and DQ2 together, to determine

if a sector is actively erasing or is erase-suspended.

Refer to the Write Operation Status section for infor-

mation on these status bits.

START

Write Erase

Command Sequence

(Notes 1, 2)

After an erase-suspended program operation is com-

plete, the bank returns to the erase-suspend-read

mode. The system can determine the status of the

program operation using the DQ7 or DQ6 status bits,

just as in the standard Byte Program operation.

Refer to the Write Operation Status section for more

information.

Data Poll to Erasing

Bank from System

Embedded

Erase

algorithm

in progress

No

Data = FFh?

In the erase-suspend-read mode, the system can also

issue the autoselect command sequence. The device

allows reading autoselect codes even at addresses

within erasing sectors, since the codes are not stored

in the memory array. When the device exits the au-

toselect mode, the device reverts to the Erase Sus-

pend mode, and is ready for another valid operation.

Refer to the Autoselect Mode and Autoselect Com-

mand Sequence sections for details.

Yes

Erasure Completed

Notes:

1. See Table 12 for erase command sequence.

2. See the section on DQ3 for information on the sector

erase timer.

To resume the sector erase operation, the system

must write the Erase Resume command (address bits

are don’t care). The bank address of the erase-sus-

pended bank is required when writing this command.

Further writes of the Resume command are ignored.

Another Erase Suspend command can be written after

the chip has resumed erasing.

Figure 5. Erase Operation

Erase Suspend/Erase Resume

Commands

The Erase Suspend command, B0h, allows the sys-

tem to interrupt a sector erase operation and then read

data from, or program data to, any sector not selected

June 6, 2005

Am29DL640G

27

Table 12. Am29DL640G Command Definitions

Bus Cycles (Notes 2–5)

Command

Sequence

(Note 1)

First

Second

Third

Addr

Fourth

Fifth

Addr

Sixth

Addr

Addr Data Addr Data

Data

Addr

Data

Read (Note 6)

Reset (Note 7)

1

RA

XXX

555

AAA

555

AAA

555

AAA

555

RD

F0

Word

Byte

Word

Byte

Word

Byte

Word

2AA

555

2AA

555

2AA

555

2AA

(BA)555

(BA)AAA

(BA)555

(BA)AAA

(BA)555

(BA)AAA

(BA)555

Manufacturer ID

4

6

4

AA

55

90 (BA)X00

01

7E

(BA)X01

90

(BA)X0E

(BA)X1C

(BA)X0F

(BA)X1E

Device ID (Note 9)

02

01

(BA)X02

(BA)X03

90

SecSi Sector Factory

Protect (Note 10)

81/01

(BA)X06

Sector/Sector Block

Protect Verify

(Note 11)

(SA)X02

4

AA

55

90

00/01

Byte

AAA

555

(BA)AAA

(SA)X04

Word

Byte

Word

Byte

Word

Byte

Word

Byte

555

AAA

555

AAA

555

AAA

555

AAA

XXX

555

AAA

555

AAA

BA

2AA

555

2AA

555

2AA

555

2AA

555

PA

555

AAA

555

Enter SecSi Sector Region

Exit SecSi Sector Region

Program

3

4

3

AA

55

88

90

A0

20

XXX

PA

00

AAA

555

PD

AAA

555

Unlock Bypass

AAA

Unlock Bypass Program (Note 12)

Unlock Bypass Reset (Note 13)

2

A0

90

PD

00

XXX

2AA

555

2AA

555

Word

555

AAA

555

AAA

555

2AA

555

2AA

555

Chip Erase

Byte

6

AA

55

80

AA

55

10

30

AAA

Word

Sector Erase

Byte

SA

AAA

Erase Suspend (Note 14)

Erase Resume (Note 15)

1

B0

30

BA

Word

CFI Query (Note 16)

Byte

55

1

98

AA

Legend:

X = Don’t care

PD = Data to be programmed at location PA. Data latches on the rising

edge of WE# or CE# pulse, whichever happens first.

RA = Address of the memory location to be read.

RD = Data read from location RA during read operation.

PA = Address of the memory location to be programmed. Addresses

latch on the falling edge of the WE# or CE# pulse, whichever happens

later.

SA = Address of the sector to be verified (in autoselect mode) or

erased. Address bits A21–A12 uniquely select any sector. Refer to

Table 2 for information on sector addresses.

BA = Address of the bank that is being switched to autoselect mode, is

in bypass mode, or is being erased. A21–A19 uniquely select a bank.

Notes:

1. See Table 1 for description of bus operations.

9. The device ID must be read across the fourth, fifth, and sixth

cycles.

2. All values are in hexadecimal.

10. The data is 81h for factory locked and 01h for not factory locked.

11. The data is 00h for an unprotected sector/sector block and 01h for

a protected sector/sector block.

12. The Unlock Bypass command is required prior to the Unlock

Bypass Program command.

13. The Unlock Bypass Reset command is required to return to the

read mode when the bank is in the unlock bypass mode.

14. The system may read and program in non-erasing sectors, or

enter the autoselect mode, when in the Erase Suspend mode.

The Erase Suspend command is valid only during a sector erase

operation, and requires the bank address.

15. The Erase Resume command is valid only during the Erase

Suspend mode, and requires the bank address.

16. Command is valid when device is ready to read array data or when

device is in autoselect mode.

3. Except for the read cycle and the fourth cycle of the autoselect

command sequence, all bus cycles are write cycles.

4. Data bits DQ15–DQ8 are don’t care in command sequences,

except for RD and PD.

5. Unless otherwise noted, address bits A21–A11 are don’t cares for

unlock and command cycles, unless SA or PA is required.

6. No unlock or command cycles required when bank is reading

array data.

7. The Reset command is required to return to the read mode (or to

the erase-suspend-read mode if previously in Erase Suspend)

when a bank is in the autoselect mode, or if DQ5 goes high (while

the bank is providing status information).

8. The fourth cycle of the autoselect command sequence is a read

cycle. The system must provide the bank address to obtain the

manufacturer ID, device ID, or SecSi Sector factory protect

information. Data bits DQ15–DQ8 are don’t care. See the

Autoselect Command Sequence section for more information.

28

Am29DL640G

June 6, 2005

WRITE OPERATION STATUS

The device provides several bits to determine the status of a

program or erase operation: DQ2, DQ3, DQ5, DQ6, and

DQ7. Table 13 and the following subsections describe the

function of these bits. DQ7 and DQ6 each offer a method for

determining whether a program or erase operation is com-

plete or in progress. The device also provides a hard-

ware-based output signal, RY/BY#, to determine whether

an Embedded Program or Erase operation is in progress or

has been completed.

vice has completed the program or erase operation

and DQ7 has valid data, the data outputs on

DQ15–DQ0 may be still invalid. Valid data on

DQ15–DQ0 (or DQ7–DQ0 for x8-only device) will ap-

pear on successive read cycles.

Table 13 shows the outputs for Data# Polling on DQ7.

Figure 6 shows the Data# Polling algorithm. Figure 22

in the AC Characteristics section shows the Data#

Polling timing diagram.

DQ7: Data# Polling

The Data# Polling bit, DQ7, indicates to the host system

whether an Embedded Program or Erase algorithm is in

progress or completed, or whether a bank is in Erase Sus-

pend. Data# Polling is valid after the rising edge of the final

WE# pulse in the command sequence.

START

Read DQ7–DQ0

Addr = VA

During the Embedded Program algorithm, the device out-

puts on DQ7 the complement of the datum programmed to

DQ7. This DQ7 status also applies to programming during

Erase Suspend. When the Embedded Program algorithm is

complete, the device outputs the datum programmed to

DQ7. The system must provide the program address to

read valid status information on DQ7. If a program address

falls within a protected sector, Data# Polling on DQ7 is ac-

tive for approximately tPSP µs, then that bank returns to the

read mode.

Yes

DQ7 = Data?

No

DQ5 = 1?

During the Embedded Erase algorithm, Data# Polling

produces a “0” on DQ7. When the Embedded Erase

algorithm is complete, or if the bank enters the Erase

Suspend mode, Data# Polling produces a “1” on DQ7.

The system must provide an address within any of the

sectors selected for erasure to read valid status infor-

mation on DQ7.

Yes

Read DQ7–DQ0

Addr = VA

After an erase command sequence is written, if all

sectors selected for erasing are protected, Data# Poll-

ing on DQ7 is active for approximately tASP µs, then

the bank returns to the read mode. If not all selected

sectors are protected, the Embedded Erase algorithm

erases the unprotected sectors, and ignores the se-

lected sectors that are protected. However, if the sys-

tem reads DQ7 at an address within a protected

sector, the status may not be valid.

Yes

DQ7 = Data?

No

PASS

FAIL

When the system detects DQ7 has changed from the

complement to true data, it can read valid data at

DQ15–DQ0 (or DQ7–DQ0 for x8-only device) on the

following read cycles. Just prior to the completion of an

Embedded Program or Erase operation, DQ7 may

change asynchronously with DQ15–DQ8 (DQ7–DQ0

for x8-only device) while Output Enable (OE#) is as-

serted low. That is, the device may change from pro-

viding status information to valid data on DQ7.

Depending on when the system samples the DQ7 out-

put, it may read the status or valid data. Even if the de-

Notes:

1. VA = Valid address for programming. During a sector

erase operation, a valid address is any sector address

within the sector being erased. During chip erase, a

valid address is any non-protected sector address.

2. DQ7 should be rechecked even if DQ5 = “1” because

DQ7 may change simultaneously with DQ5.

Figure 6. Data# Polling Algorithm

June 6, 2005

Am29DL640G

29

DQ6 also toggles during the erase-suspend-program

mode, and stops toggling once the Embedded Pro-

gram algorithm is complete.

RY/BY#: Ready/Busy#

The RY/BY# is a dedicated, open-drain output pin

which indicates whether an Embedded Algorithm is in

progress or complete. The RY/BY# status is valid after

the rising edge of the final WE# pulse in the command

sequence. Since RY/BY# is an open-drain output, sev-

eral RY/BY# pins can be tied together in parallel with a

Table 13 shows the outputs for Toggle Bit I on DQ6.

Figure 7 shows the toggle bit algorithm. Figure 23 in

the “AC Characteristics” section shows the toggle bit

timing diagrams. Figure 24 shows the differences be-

tween DQ2 and DQ6 in graphical form. See also the

subsection on DQ2: Toggle Bit II.

pull-up resistor to V_CC

.

If the output is low (Busy), the device is actively eras-

ing or programming. (This includes programming in

the Erase Suspend mode.) If the output is high

(Ready), the device is in the read mode, the standby

mode, or one of the banks is in the erase-sus-

pend-read mode.

START

Read Byte

(DQ7–DQ0)

Address =VA

Table 13 shows the outputs for RY/BY#.

DQ6: Toggle Bit I

Toggle Bit I on DQ6 indicates whether an Embedded

Program or Erase algorithm is in progress or com-

plete, or whether the device has entered the Erase

Suspend mode. Toggle Bit I may be read at any ad-

dress, and is valid after the rising edge of the final

WE# pulse in the command sequence (prior to the

program or erase operation), and during the sector

erase time-out.

Read Byte

(DQ7–DQ0)

Address =VA

No

Toggle Bit

= Toggle?

During an Embedded Program or Erase algorithm op-

eration, successive read cycles to any address cause

DQ6 to toggle. The system may use either OE# or

CE# to control the read cycles. When the operation is

complete, DQ6 stops toggling.

Yes

No

DQ5 = 1?

Yes

After an erase command sequence is written, if all

sectors selected for erasing are protected, DQ6 tog-

gles for approximately tASP µs, then returns to read-

ing array data. If not all selected sectors are protected,

the Embedded Erase algorithm erases the unpro-

tected sectors, and ignores the selected sectors that

are protected.

Read Byte Twice

(DQ7–DQ0)

Address = VA

The system can use DQ6 and DQ2 together to deter-

mine whether a sector is actively erasing or is

erase-suspended. When the device is actively erasing

(that is, the Embedded Erase algorithm is in progress),

DQ6 toggles. When the device enters the Erase Sus-

pend mode, DQ6 stops toggling. However, the system

must also use DQ2 to determine which sectors are

erasing or erase-suspended. Alternatively, the system

can use DQ7 (see the subsection on DQ7: Data# Poll-

ing).

Toggle Bit

= Toggle?

No

Yes

Program/Erase

Operation Not

Complete, Write

Reset Command

Program/Erase

Operation Complete

Note: The system should recheck the toggle bit even if DQ5

= “1” because the toggle bit may stop toggling as DQ5

changes to “1.” See the subsections on DQ6 and DQ2 for

more information.

If a program address falls within a protected sector,

DQ6 toggles for approximately tPSP µs after the pro-

gram command sequence is written, then returns to

reading array data.

Figure 7. Toggle Bit Algorithm

30

Am29DL640G

June 6, 2005

not gone high. The system may continue to monitor

the toggle bit and DQ5 through successive read cy-

cles, determining the status as described in the previ-

ous paragraph. Alternatively, it may choose to perform

other system tasks. In this case, the system must start

at the beginning of the algorithm when it returns to de-

termine the status of the operation (top of Figure 7).

DQ2: Toggle Bit II

The “Toggle Bit II” on DQ2, when used with DQ6, indi-

cates whether a particular sector is actively erasing

(that is, the Embedded Erase algorithm is in progress),

or whether that sector is erase-suspended. Toggle Bit

II is valid after the rising edge of the final WE# pulse in

the command sequence.

DQ5: Exceeded Timing Limits

DQ2 toggles when the system reads at addresses

within those sectors that have been selected for era-

sure. (The system may use either OE# or CE# to con-

trol the read cycles.) But DQ2 cannot distinguish

whether the sector is actively erasing or is erase-sus-

pended. DQ6, by comparison, indicates whether the

device is actively erasing, or is in Erase Suspend, but

cannot distinguish which sectors are selected for era-

sure. Thus, both status bits are required for sector and

mode information. Refer to Table 13 to compare out-

puts for DQ2 and DQ6.

DQ5 indicates whether the program or erase time has

exceeded a specified internal pulse count limit. Under these

conditions DQ5 produces a “1,” indicating that the program

or erase cycle was not successfully completed.

The device may output a “1” on DQ5 if the system tries

to program a “1” to a location that was previously pro-

grammed to “0.” Only an erase operation can

change a “0” back to a “1.” Under this condition, the

device halts the operation, and when the timing limit

has been exceeded, DQ5 produces a “1.”

Figure 7 shows the toggle bit algorithm in flowchart

form, and the section “DQ2: Toggle Bit II” explains the

algorithm. See also the DQ6: Toggle Bit I subsection.

Figure 23 shows the toggle bit timing diagram. Figure

24 shows the differences between DQ2 and DQ6 in

graphical form.

Under both these conditions, the system must write

the reset command to return to the read mode (or to

the erase-suspend-read mode if a bank was previ-

ously in the erase-suspend-program mode).

DQ3: Sector Erase Timer

Reading Toggle Bits DQ6/DQ2

After writing a sector erase command sequence, the

system may read DQ3 to determine whether or not

erasure has begun. (The sector erase timer does not

apply to the chip erase command.) If additional

sectors are selected for erasure, the entire time-out

also applies after each additional sector erase com-

mand. When the time-out period is complete, DQ3

switches from a “0” to a “1.” If the time between addi-

tional sector erase commands from the system can be

assumed to be less than tSEA µs, the system need

not monitor DQ3. See also the Sector Erase Com-

mand Sequence section.

Refer to Figure 7 for the following discussion. When-

ever the system initially begins reading toggle bit sta-

tus, it must read DQ15–DQ0 (or DQ7–DQ0 for x8-only

device) at least twice in a row to determine whether a

toggle bit is toggling. Typically, the system would note

and store the value of the toggle bit after the first read.

After the second read, the system would compare the

new value of the toggle bit with the first. If the toggle bit

is not toggling, the device has completed the program

or erase operation. The system can read array data on

DQ15–DQ0 (or DQ7–DQ0 for x8-only device) on the

following read cycle.

After the sector erase command is written, the system

should read the status of DQ7 (Data# Polling) or DQ6

(Toggle Bit I) to ensure that the device has accepted

the command sequence, and then read DQ3. If DQ3 is

“1,” the Embedded Erase algorithm has begun; all fur-

ther commands (except Erase Suspend) are ignored

until the erase operation is complete. If DQ3 is “0,” the

device will accept additional sector erase commands.

To ensure the command has been accepted, the sys-

tem software should check the status of DQ3 prior to

and following each subsequent sector erase com-

mand. If DQ3 is high on the second status check, the

last command might not have been accepted.

However, if after the initial two read cycles, the system

determines that the toggle bit is still toggling, the sys-

tem also should note whether the value of DQ5 is high

(see the section on DQ5). If it is, the system should

then determine again whether the toggle bit is tog-

gling, since the toggle bit may have stopped toggling

just as DQ5 went high. If the toggle bit is no longer

toggling, the device has successfully completed the

program or erase operation. If it is still toggling, the de-

vice did not completed the operation successfully, and

the system must write the reset command to return to

reading array data.

Table 13 shows the status of DQ3 relative to the other

status bits.

The remaining scenario is that the system initially de-

termines that the toggle bit is toggling and DQ5 has

June 6, 2005

Am29DL640G

31

Table 13. Write Operation Status

DQ7

DQ5

DQ2

Status

(Note 2)

DQ6

(Note 1)

DQ3

N/A

1

(Note 2)

RY/BY#

Embedded Program Algorithm

Embedded Erase Algorithm

Erase

Erase-Suspend-

Read

DQ7#

0

Toggle

0

No toggle

Toggle

0

Standard

Mode

1

No toggle

0

N/A

Toggle

1

Suspended Sector

Erase

Suspend

Mode

Non-Erase

Suspended Sector

Data

0

Data

N/A

Data

N/A

1

0

Erase-Suspend-Program

DQ7#

Toggle

Notes:

1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing limits.

Refer to the section on DQ5 for more information.

2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further

details.

3. When reading write operation status bits, the system must always provide the bank address where the Embedded Algorithm

is in progress. The device outputs array data if the system addresses a non-busy bank.

32

Am29DL640G

June 6, 2005

ABSOLUTE MAXIMUM RATINGS

Storage Temperature

Plastic Packages . . . . . . . . . . . . . . . –65°C to +150°C

20 ns

Ambient Temperature

with Power Applied. . . . . . . . . . . . . . –65°C to +125°C

+0.8 V

Voltage with Respect to Ground

–0.5 V

–2.0 V

V_CC(Note 1) . . . . . . . . . . . . . . . . .–0.5 V to +4.0 V

A9, OE#, and RESET#

(Note 2). . . . . . . . . . . . . . . . . . . .–0.5 V to +12.5 V

20 ns

WP#/ACC . . . . . . . . . . . . . . . . . .–0.5 V to +10.5 V

All other pins (Note 1) . . . . . . –0.5 V to V_CC+0.5 V

Output Short Circuit Current (Note 3) . . . . . . 200 mA

Figure 8. Maximum Negative

Overshoot Waveform

Notes:

1. Minimum DC voltage on input or I/O pins is –0.5 V.

During voltage transitions, input or I/O pins may

overshoot V_SSto –2.0 V for periods of up to 20 ns.

Maximum DC voltage on input or I/O pins is V_CC+0.5 V.

See Figure 8. During voltage transitions, input or I/O pins

may overshoot to V_CC+2.0 V for periods up to 20 ns. See

Figure 9.

20 ns

V_CC

+2.0 V

V_CC

2. Minimum DC input voltage on pins A9, OE#, RESET#,

and WP#/ACC is –0.5 V. During voltage transitions, A9,

OE#, WP#/ACC, and RESET# may overshoot V_SSto

–2.0 V for periods of up to 20 ns. See Figure 8. Maximum

DC input voltage on pin A9 is +12.5 V which may

overshoot to +14.0 V for periods up to 20 ns. Maximum

DC input voltage on WP#/ACC is +9.5 V which may

overshoot to +12.0 V for periods up to 20 ns.

+0.5 V

2.0 V

20 ns

Figure 9. Maximum Positive

Overshoot Waveform

3. No more than one output may be shorted to ground at a

time. Duration of the short circuit should not be greater

than one second.

Stresses above those listed under “Absolute Maximum

Ratings” may cause permanent damage to the device. This

is a stress rating only; functional operation of the device at

these or any other conditions above those indicated in the

operational sections of this data sheet is not implied.

Exposure of the device to absolute maximum rating

conditions for extended periods may affect device reliability.

OPERATING RANGES

Industrial (I) Devices

Ambient Temperature (T_A) . . . . . . . . . –40°C to +85°C

Extended (E) Devices

Ambient Temperature (T_A) . . . . . . . . –55°C to +125°C

V

_CCSupply Voltages

V_CCfor standard voltage range . . . . . . .2.7 V to 3.6 V

Operating ranges define those limits between which the

functionality of the device is guaranteed.

June 6, 2005

Am29DL640G

33

DC CHARACTERISTICS

CMOS Compatible

Parameter

Symbol

Parameter Description

Test Conditions

V_IN= V_SSto V_CC

V_CC= V_{CC max}

V_CC= V_{CC max}; A9 = 12.5 V

V_OUT= V_SSto V_CC

Min

Typ

Max

± 1.0

35

Unit

µA

,

I_LI

Input Load Current

I_LIT

A9 Input Load Current

Output Leakage Current

Reset Leakage Current

µA

,

I_LO

± 1.0

µA

V_CC= V_{CC max}

I_LR

V_CC= V_{CC max}; RESET= 12.5 V

35

16

4

µA

5 MHz

10

2

CE# = V_IL, OE# ₌V_IH,

Byte Mode

1 MHz

V_CCActive Read Current

(Notes 1, 2)

I_CC1

mA

5 MHz

10

2

16

4

CE# = V_IL, OE# = V_IH,

Word Mode

1 MHz

I_CC2

I_CC3

I_CC4

V_CCActive Write Current (Notes 2, 3) CE# = V_IL, OE# = V_IH, WE# = V_IL

15

0.2

30

5

mA

µA

V_CCStandby Current (Note 2)

V_CCReset Current (Note 2)

CE#, RESET# = V_CC± ±0.3 V

RESET# = V_SS± ±0.3 V

5

V_IH= V_CC± 0.3 V;

V_IL= V_SS± ±0.3 V

I_CC5

Automatic Sleep Mode (Notes 2, 4)

0.2

5

µA

Byte

21

45

V_CCActive Read-While-Program

Current (Notes 1, 2)

I_CC6

CE# = V_IL, OE# = V_IH

mA

Word

Byte

V_CCActive Read-While-Erase

Current (Notes 1, 2)

I_CC7

mA

Word

V_CCActive

Program-While-Erase-Suspended

Current (Notes 2, 5)

I_CC8

CE# = V_IL, OE# = V_IH

17

35

V_IL

V_IH

Input Low Voltage

Input High Voltage

–0.5

0.8

V

0.7 x V_CC

V_CC+ 0.3

Voltage for WP#/ACC Sector

Protect/Unprotect and Program

Acceleration

V_HH

V_CC= 3.0 V ± 10%

8.5

9.5

V

Voltage for Autoselect and

Temporary Sector Unprotect

V_ID

V_CC= 3.0 V ± 10%

11.5

12.5

0.45

V_OL

V_OH1

V_OH2

V_LKO

Output Low Voltage

I_OL= 4.0 mA, V_CC= V_{CC min}

I_OH= –2.0 mA, V_CC= V_{CC min}

I_OH= –100 µA, V_CC= V_{CC min}

V

0.85 V_CC

V_CC–0.4

2.3

Output High Voltage

Low V_CCLock-Out Voltage (Note 5)

2.5

V

Notes:

1. The I_CCcurrent listed is typically less than 2 mA/MHz, with OE# at V_IH.

2. Maximum I_CCspecifications are tested with V_CC= V_CCmax.

3. I_CCactive while Embedded Erase or Embedded Program is in progress.

4. Automatic sleep mode enables the low power mode when addresses remain stable for t_ACC+ 30 ns. Typical sleep mode current is

200 nA.

5. Not 100% tested.

34

Am29DL640G

June 6, 2005

DC CHARACTERISTICS

Zero-Power Flash

25

20

15

10

5

0

500

1000

1500

2000

2500

3000

3500

4000

Time in ns

Note: Addresses are switching at 1 MHz

Figure 10. I_CC1Current vs. Time (Showing Active and Automatic Sleep Currents)

12

10

8

3.6 V

2.7 V

6

4

2

0

1

2

3

4

5

Frequency in MHz

Note: T = 25 °C

Figure 11. Typical I_CC1vs. Frequency

June 6, 2005

Am29DL640G

35

TEST CONDITIONS

Table 14. Test Specifications

3.3 V

Test Condition

70

90, 120 Unit

Output Load

1 TTL gate

2.7 kΩ

Device

Under

Test

Output Load Capacitance, C_L

(including jig capacitance)

30

100

pF

Input Rise and Fall Times

Input Pulse Levels

5

0.0–3.0

ns

V

C

L

6.2 kΩ

Input timing measurement

reference levels

1.5

V

Output timing measurement

reference levels

Note: Diodes are IN3064 or equivalent

Figure 12. Test Setup

KEY TO SWITCHING WAVEFORMS

WAVEFORM

INPUTS

OUTPUTS

Steady

Changing from H to L

Changing from L to H

Don’t Care, Any Change Permitted

Does Not Apply

Changing, State Unknown

Center Line is High Impedance State (High Z)

3.0 V

0.0 V

1.5 V

Input

Measurement Level

Output

Figure 13. Input Waveforms and Measurement Levels

36

Am29DL640G

June 6, 2005

AC CHARACTERISTICS

Read-Only Operations

Parameter

Speed Options

JEDEC

Std. Description

Test Setup

70

90

120 Unit

t_AVAV

t_RC

Read Cycle Time (Note 1)

Min

70

90

120

ns

CE#,

OE# = V_IL

t_AVQV

t_ACCAddress to Output Delay

Max

90

t_ELQV

t_GLQV

t_EHQZ

t_GHQZ

t_CE

t_OE

t_DF

Chip Enable to Output Delay

OE# = V_IL

Max

70

30

90

35

16

120

50

ns

Output Enable to Output Delay

Chip Enable to Output High Z (Notes 1, 3)

Output Enable to Output High Z (Notes 1, 3)

Output Hold Time From Addresses, CE# or OE#,

Whichever Occurs First

t_AXQX

t_OH

Min

0

ns

Read

Output Enable Hold Time

t_OEH

Toggle and

Data# Polling

(Note 1)

10

Notes:

1. Not 100% tested.

2. See Figure 12 and Table 14 for test specifications

3. Measurements performed by placing a 50 ohm termination on the data pin with a bias of V_CC/2. The time from OE# high to

the data bus driven to V_CC/2 is taken as t_DF

.

t_RC

Addresses Stable

t_ACC

Addresses

CE#

t_RH

t_DF

t_OE

OE#

t_OEH

WE#

t_CE

t_OH

HIGH Z

Output Valid

Outputs

RESET#

RY/BY#

0 V

Figure 14. Read Operation Timings

June 6, 2005

Am29DL640G

37

AC CHARACTERISTICS

Hardware Reset (RESET#)

Parameter

JEDEC

Std

Description

All Speed Options

Unit

RESET# Pin Low (During Embedded Algorithms)

to Read Mode (See Note)

t_Ready

Max

20

µs

RESET# Pin Low (NOT During Embedded

Algorithms) to Read Mode (See Note)

t_Ready

500

ns

t_RP

t_RH

t_RPD

t_RB

RESET# Pulse Width

Min

500

50

20

0

ns

µs

ns

Reset High Time Before Read (See Note)

RESET# Low to Standby Mode

RY/BY# Recovery Time

Note: Not 100% tested.

RY/BY#

CE#, OE#

RESET#

t_RH

t_RP

t_Ready

Reset Timings NOT during Embedded Algorithms

Reset Timings during Embedded Algorithms

t_Ready

RY/BY#

t_RB

CE#, OE#

RESET#

t_RP

Figure 15. Reset Timings

38

Am29DL640G

June 6, 2005

AC CHARACTERISTICS

Word/Byte Configuration (BYTE#)

Parameter

Speed Options

JEDEC

Std.

t_{ELFL/ ELFH}

t_FLQZ

Description

70

90

5

120

Unit

ns

t

CE# to BYTE# Switching Low or High

BYTE# Switching Low to Output HIGH Z

BYTE# Switching High to Output Active

Max

Min

16

90

ns

t_FHQV

70

120

ns

CE#

OE#

BYTE#

t_ELFL

Data Output

(DQ14–DQ0)

Data Output

(DQ7–DQ0)

BYTE#

DQ14–DQ0

Switching

from word

to byte

Address

Input

DQ15

Output

mode

DQ15/A-1

BYTE#

t_FLQZ

t_ELFH

BYTE#

Switching

from byte

to word

Data Output

(DQ7–DQ0)

Data Output

(DQ14–DQ0)

DQ14–DQ0

DQ15/A-1

mode

Address

Input

DQ15

Output

t_FHQV

Figure 16. BYTE# Timings for Read Operations

CE#

The falling edge of the last WE# signal

WE#

BYTE#

t_SET

(t_AS

)

t_HOLD(t_AH

)

Note: Refer to the Erase/Program Operations table for t_ASand t_AHspecifications.

Figure 17. BYTE# Timings for Write Operations

June 6, 2005

Am29DL640G

39

AC CHARACTERISTICS

Erase and Program Operations

Parameter

Speed Options

JEDEC

t_AVAV

Std

t_WC

t_AS

Description

70

90

0

120

Unit

ns

Write Cycle Time (Note 1)

Address Setup Time

Min

70

120

t_AVWL

ns

t_ASO

t_AH

Address Setup Time to OE# low during toggle bit polling

Address Hold Time

15

45

ns

t_WLAX

40

50

ns

Address Hold Time From CE# or OE# high

during toggle bit polling

t_AHT

Min

0

ns

t_DVWH

t_WHDX

t_DS

t_DH

Data Setup Time

Min

45

0

ns

Data Hold Time

t_OEPH

Output Enable High during toggle bit polling

20

Read Recovery Time Before Write

(OE# High to WE# Low)

t_GHWL

Min

0

ns

t_ELWL

t_WHEH

t_WLWH

t_WHDL

t_CS

t_CH

CE# Setup Time

Min

Typ

0

ns

CE# Hold Time

t_WP

Write Pulse Width

30

35

30

0

50

30

t_WPH

t_SR/W

Write Pulse Width High

Latency Between Read and Write Operations

Byte

5

t_WHWH1

Programming Operation (Note 2)

Word

µs

7

Accelerated Programming Operation,

Word or Byte (Note 2)

t_WHWH1

t_WHWH2

t_WHWH1

Typ

4

t_WHWH2

t_VCS

Sector Erase Operation (Note 2)

V_CCSetup Time (Note 1)

Typ

Min

Max

0.4

50

0

sec

µs

t_RB

Write Recovery Time from RY/BY#

Program/Erase Valid to RY/BY# Delay

Sector Erase Accept Time-Out

Erase Suspend Latency

ns

t_BUSY

tSEA

tESL

90

80

35

ns

Toggle Time During Programming Within a

Protected Sector

tPSP

tASP

TYP

1

Toggle Time During

Sector Protection

100

Notes:

1. Not 100% tested.

2. See the “Erase And Programming Performance” section for more information.

40

Am29DL640G

June 6, 2005

AC CHARACTERISTICS

Program Command Sequence (last two cycles)

Read Status Data (last two cycles)

t_AS

PA

t_WC

Addresses

555h

PA

t_AH

CE#

OE#

t_CH

t_WHWH1

t_WP

WE#

Data

t_WPH

t_CS

t_DS

t_DH

PD

D_OUT

A0h

Status

t_BUSY

t_RB

RY/BY#

V_CC

t_VCS

Notes:

1. PA = program address, PD = program data, D_OUTis the true data at the program address.

2. Illustration shows device in word mode.

Figure 18. Program Operation Timings

V_HH

V_ILor V_IH

WP#/ACC

V_ILor V_IH

t_VHH

Figure 19. Accelerated Program Timing Diagram

June 6, 2005

Am29DL640G

41

AC CHARACTERISTICS

Erase Command Sequence (last two cycles)

Read Status Data

VA

t_AS

SA

t_WC

VA

Addresses

CE#

2AAh

555h for chip erase

t_AH

t_CH

OE#

t_WP

WE#

t_WPH

t_WHWH2

t_CS

t_DS

t_DH

In

Data

Complete

55h

30h

Progress

10 for Chip Erase

t_BUSY

t_RB

RY/BY#

V_CC

t_VCS

Notes:

1. SA = sector address (for Sector Erase), VA = Valid Address for reading status data (see “Write Operation Status”.

2. These waveforms are for the word mode.

Figure 20. Chip/Sector Erase Operation Timings

42

Am29DL640G

June 6, 2005

AC CHARACTERISTICS

t_WC

Valid PA

t_WC

t_RC

t_WC

Valid PA

Valid RA

Valid PA

Addresses

t_AH

t_CPH

t_ACC

t_CE

CE#

t_CP

t_OE

OE#

t_OEH

t_GHWL

t_WP

WE#

t_DF

t_WPH

t_DS

t_OH

t_DH

Valid

Out

Valid

In

Valid

In

Valid

In

Data

t_SR/W

WE# Controlled Write Cycle

Read Cycle

CE# or CE2# Controlled Write Cycles

Figure 21. Back-to-back Read/Write Cycle Timings

t_RC

Addresses

CE#

VA

t_ACC

t_CE

VA

t_CH

t_OE

OE#

WE#

t_OEH

t_DF

t_OH

High Z

DQ7

Valid Data

Complement

True

DQ0–DQ6

Valid Data

Status Data

True

Status Data

t_BUSY

RY/BY#

Note: VA = Valid address. Illustration shows first status cycle after command sequence, last status read cycle, and array data

read cycle.

Figure 22. Data# Polling Timings (During Embedded Algorithms)

June 6, 2005

Am29DL640G

43

AC CHARACTERISTICS

t_AHT

t_AS

Addresses

t_AHT

t_ASO

CE#

t_OEH

WE#

t_CEPH

t_OEPH

OE#

t_DH

Valid Data

t_OE

Valid

Status

Valid

Status

Valid

Status

DQ6/DQ2

Valid Data

(first read)

(second read)

(stops toggling)

RY/BY#

Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status

read cycle, and array data read cycle

Figure 23. Toggle Bit Timings (During Embedded Algorithms)

Enter

Embedded

Erasing

Erase

Suspend

Enter Erase

Suspend Program

Erase

Resume

Erase

Erase Suspend

Read

Erase

Suspend

Program

Erase

Complete

WE#

Erase

Erase Suspend

Read

DQ6

DQ2

Note: DQ2 toggles only when read at an address within an erase-suspended sector. The system may use OE# or CE# to toggle

DQ2 and DQ6.

Figure 24. DQ2 vs. DQ6

44

Am29DL640G

June 6, 2005

AC CHARACTERISTICS

Temporary Sector Unprotect

Parameter

JEDEC

Std

t_VIDR

t_VHH

Description

All Speed Options

Unit

ns

V_IDRise and Fall Time (See Note)

V_HHRise and Fall Time (See Note)

Min

500

250

ns

RESET# Setup Time for Temporary Sector

Unprotect

t_RSP

Min

4

µs

RESET# Hold Time from RY/BY# High for

Temporary Sector Unprotect

t_RRB

Note: Not 100% tested.

V_ID

RESET#

V_SS, V_IL,

or V_IH

V_SS, V_IL,

or V_IH

t_VIDR

Program or Erase Command Sequence

CE#

WE#

t_RRB

t_RSP

RY/BY#

Figure 25. Temporary Sector Unprotect Timing Diagram

June 6, 2005

Am29DL640G

45

AC CHARACTERISTICS

V_ID

V_IH

RESET#

SA, A6,

A1, A0

Valid*

Sector Group Protect/Unprotect

60h 60h

Valid*

Status

Verify

40h

Data

1 µs

Sector Group Protect: 150 µs

Sector Group Unprotect: 15 ms

CE#

WE#

OE#

* For sector protect, A6 = 0, A1 = 1, A0 = 0. For sector unprotect, A6 = 1, A1 = 1, A0 = 0.

Figure 26. Sector/Sector Block Protect and

Unprotect Timing Diagram

46

Am29DL640G

June 6, 2005

AC CHARACTERISTICS

Alternate CE# Controlled Erase and Program Operations

Parameter

Speed Options

JEDEC

t_AVAV

Std.

t_WC

t_AS

Description

70

90

0

120

Unit

ns

Write Cycle Time (Note 1)

Address Setup Time

Address Hold Time

Data Setup Time

Data Hold Time

Min

70

120

t_AVWL

t_ELAX

t_DVEH

t_EHDX

ns

t_AH

40

45

0

50

ns

t_DS

ns

t_DH

ns

Read Recovery Time Before Write

(OE# High to WE# Low)

t_GHEL

Min

0

ns

t_WLEL

t_EHWH

t_ELEH

t_EHEL

t_WS

t_WH

t_CP

WE# Setup Time

WE# Hold Time

Min

Typ

0

ns

CE# Pulse Width

CE# Pulse Width High

40

45

30

5

50

t_CPH

Byte

Programming Operation

(Note 2)

t_WHWH1

µs

Word

7

Accelerated Programming Operation,

Word or Byte (Note 2)

t_WHWH1

t_WHWH2

Notes:

t_WHWH1

t_WHWH2

Typ

4

µs

Sector Erase Operation (Note 2)

0.4

sec

1. Not 100% tested.

2. See the “Erase And Programming Performance” section for more information.

June 6, 2005

Am29DL640G

47

AC CHARACTERISTICS

555 for program

PA for program

2AA for erase

SA for sector erase

555 for chip erase

Data# Polling

Addresses

PA

t_WC

t_WH

t_AS

t_AH

WE#

OE#

t_GHEL

t_{WHWH1 or 2}

t_CP

CE#

Data

t_WS

t_CPH

t_DS

t_BUSY

t_DH

DQ7#

D_OUT

t_RH

A0 for program

55 for erase

PD for program

30 for sector erase

10 for chip erase

RESET#

RY/BY#

Notes:

1. Figure indicates last two bus cycles of a program or erase operation.

2. PA = program address, SA = sector address, PD = program data.

3. DQ7# is the complement of the data written to the device. D_OUTis the data written to the device.

4. Waveforms are for the word mode.

Figure 27. Alternate CE# Controlled Write (Erase/Program) Operation Timings

48

Am29DL640G

June 6, 2005

ERASE AND PROGRAMMING PERFORMANCE

Parameter

Typ (Note 1) Max (Note 2)

Unit

sec

µs

Comments

Sector Erase Time

0.4

56

5

Excludes 00h programming

prior to erasure (Note 4)

Chip Erase Time

Byte Program Time

Accelerated Byte/Word Program Time

Word Program Time

150

120

210

126

84

4

µs

Excludes system level

overhead (Note 5)

7

µs

Byte Mode

Word Mode

42

28

Chip Program Time

(Note 3)

sec

Notes:

1. Typical program and erase times assume the following conditions: 25°C, 3.0 V V_CC, 1,000,000 cycles. Additionally,

programming typicals assume checkerboard pattern.

2. Under worst case conditions of 90°C, V_CC= 2.7 V, 1,000,000 cycles.

3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most bytes

program faster than the maximum program times listed.

4. In the pre-programming step of the Embedded Erase algorithm, all bytes are programmed to 00h before erasure.

5. System-level overhead is the time required to execute the two- or four-bus-cycle sequence for the program command. See Table

12 for further information on command definitions.

6. The device has a minimum erase and program cycle endurance of 1,000,000 cycles.

LATCHUP CHARACTERISTICS

Description

Min

Max

Input voltage with respect to V_SSon all pins except I/O pins

(including A9, OE#, and RESET#)

–1.0 V

12.5 V

Input voltage with respect to V_SSon all I/O pins

–1.0 V

V_CC+ 1.0 V

+100 mA

V

_CCCurrent

–100 mA

Note: Includes all pins except V_CC. Test conditions: V_CC= 3.0 V, one pin at a time.

TSOP & BGA PIN CAPACITANCE

Parameter Symbol

Parameter Description

Test Setup

Typ

6

Max

7.5

5.0

12

Unit

pF

TSOP

C_IN

Input Capacitance

V_IN= 0

V_OUT= 0

V_IN= 0

Fine-pitch BGA

TSOP

4.2

8.5

5.4

7.5

3.9

C_OUT

Output Capacitance

Fine-pitch BGA

TSOP

6.5

9

C_IN2

Control Pin Capacitance

Fine-pitch BGA

4.7

Notes:

1. Sampled, not 100% tested.

2. Test conditions T_A= 25°C, f = 1.0 MHz.

DATA RETENTION

Parameter Description

Test Conditions

150°C

Min

10

Unit

Years

Minimum Pattern Data Retention Time

June 6, 2005

125°C

20

Am29DL640G

49

PHYSICAL DIMENSIONS

FBE063—63-Ball Fine-Pitch Ball Grid Array (FBGA) 12 x 11 mm package

Dwg rev AF; 10/99

50

Am29DL640G

June 6, 2005

PHYSICAL DIMENSIONS

LAA064—64-Ball Fortified Ball Grid Array (FBGA) 13 x 11 mm package

June 6, 2005

Am29DL640G

51

PHYSICAL DIMENSIONS

TS 048—48-Pin Standard TSOP

Dwg rev AA; 10/99

52

Am29DL640G

June 6, 2005

REVISION SUMMARY

Noted that the SecSi Sector, autoselect, and CFI func-

tions are unavailable when a program or erase opera-

tion is in progress.

Revision A (November 7, 2001)

Initial release.

Revision A+1 (April 15, 2002)

Common Flash Memory Interface (CFI)

Changed wording in last sentence of third paragraph

from, “...the autoselect mode.” to “...reading array

data.”

Global

Changed data sheet status from Advance Information

to Preliminary.

Changed CFI website address.

Ordering Information

Command Definitions

Changed package marking for Fortified BGA (ordering

designator is PC).

Changed wording in last sentence of first paragraph

from, “...resets the device to reading array data.”

to...”may place the device to an unknown state. A reset

command is then required to return the device to read-

ing array data.”

Revision A+2 (June 7, 2002)

Global

Added 65 ns speed option.

Table 12. Am29DL640G Command Definitions

Changed the first address of the unlock bypass reset

command sequence from BA to XXX.

Revision B (September 13, 2002)

Global

CMOS Compatible

Removed Preliminary designation from data sheet.

Added I_LRparameter to table.

Revision B+1 (October 21, 2002)

Deleted I_ACCparameter from table.

Connection Diagrams

AC Characteristics and Read-Only Operations

On 64-ball Fortified BGA package, changed first row

and last row to NC in pin diagram.

Changed the Chip Enable to Output High Z and Out-

put Enable to Output High Z Speed Options from 30

ns to 16 ns.

On 48-ball Fine-pitch BGA package, applied note with

asterisk to top left hand NC balls.

Word/Byte Configuration

Changed BYTE# Switching Low to Output High Z

Speed Options from 30 ns to 16 ns.

Special Handling Instructions

Changed wording to include TSOP and BGA pack-

ages.

TSOP Pin Capacitance

Changed all typicals and maximums in table.

Ordering Information

Removed FBGA designation from the PC and WH

package type.

Added fine-pitch BGA capacitance.

Global

SecSi Sector Flash Memory Region, and Enter

SecSi Sector/Exit SecSi Sector Command

Sequence

Removed 65 ns speed option.

Revision B+2 (November 11, 2002)

Noted that the A_CCfunction and unlock bypass modes

are not available when the SecSi sector is enabled.

Customer Lockable: SecSi Sector NOT

Programmed or Protected at the factory.

Byte/Word Program Command Sequence, Sector

Erase Command Sequence, and Chip Erase Com-

mand Sequence

Added second bullet, SecSi sector-protect.

June 6, 2005

Am29DL640G

53

Revision B3 (July 21, 2004)

“Am29DL640G Autoselect Codes, (High Voltage

Method)” on page 15

Replaced “80h (factory locked), 00h (not factory

locked)” with “81h (factory locked), 01h (not factory

locked)”.

“Am29DL640G Command Definitions” on page 28

In SecSI Sector Factory Protect row, Data column -

Replaced “80/00” with “81/01.

(Note 10) - Replaced “The data is 80h for factory

locked and 00h for not factory locked” with “The data is

81h for factory locked and 01h for not factory locked”.

Global Changes

Replaced “80 µ” with “tSEA µ”.

Replaced “20 µ” with “tSEL µ”.

Replaced “1µ” with “tPSP µ”.

Replaced “100 µ” with “tASP µ”.

Replaced “50 µ” with “tSEA µ”.

“Erase and Program Operations” on page 40

Added last four columns to table.

Revision B4 (October 15, 2004)

Cover page and Title page

Added notation to superseding documents.

Revision B5(June 6, 2005)

Modified disclaimers

Colophon

The products described in this document are designed, developed and manufactured as contemplated for general use, including without limita-

tion, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as con-

templated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the

public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility,

aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for

any use where chance of failure is intolerable (i.e., submersible repeater and artificial satellite). Please note that Spansion will not be liable to

you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor de-

vices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design mea-

sures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating

conditions. If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign

Exchange and Foreign Trade Law of Japan, the US Export Administration Regulations or the applicable laws of any other country, the prior au-

thorization by the respective government entity will be required for export of those products.

Trademarks and Notice

AMD, the AMD logo, and combinations thereof are registered trademarks of Advanced Micro Devices, Inc.

ExpressFlash is a trademark of Advanced Micro Devices, Inc.

Product names used in this publication are for identification purposes only and may be trademarks of their respective companies.

54

Am29DL640G

June 6, 2005


型号：	D640G70VI
厂家：	SPANSION
描述：	64 Megabit (8 M x 8-Bit/4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory 64兆位（8M ×8位/ 4米x 16位） CMOS 3.0伏只，同步读/写闪存闪存
文件：	总56页 (文件大小：1179K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

D640G70VI [SPANSION]

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