27C256-12 [Macronix]
256K-BIT [32K x 8] CMOS EPROM; 256K - BIT [ 32K ×8 ] CMOS EPROM型号: | 27C256-12 |
厂家: | MACRONIX INTERNATIONAL |
描述: | 256K-BIT [32K x 8] CMOS EPROM |
文件: | 总15页 (文件大小:765K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
MX27C256
256K-BIT [32K x 8] CMOS EPROM
FEATURES
• 32K x 8 organization
• Single +5V power supply
• Operating current: 30mA
• Standby current: 100uA
• +12.5V programming voltage
• Fast access time: 45/55/70/90/100/120/150 ns
• Totally static operation
•
Package type:
- 28 pin plastic DIP
- 32 pin PLCC
- 28 pin 8 x 13.4mm TSOP(I)
• Completely TTL compatible
GENERAL DESCRIPTION
may be used. The MX27C256 supports intelligent fast
programming algorithm which can result in program-
ming time of less than ten seconds.
The MX27C256 is a 5V only, 256K-bit, One-Time
Programmable Read Only Memory. It is organized as
32Kby8bits, operatesfromasingle+5volt supply, has
astaticstandby mode, andfeaturesfastsingleaddress
locationprogramming. AllprogrammingsignalsareTTL
levels, requiring a single pulse. For programming from
outside the system, existing EPROM programmers
This EPROM is packaged in industry standard 28 pin
dual-in-line packages, 32 lead PLCC, and 28 lead
TSOP(I) packages.
BLOCK DIAGRAM
PIN CONFIGURATIONS
PDIP
PLCC
CONTROL
LOGIC
OUTPUT
CE
OE
Q0~Q7
BUFFERS
VCC
A14
A13
A8
VPP
A12
A7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
4
5
1
32
30
29
A8
A6
3
A6
4
A9
A5
A4
A3
A2
A1
A0
NC
Q0
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Y-DECODER
X-DECODER
Y-SELECT
A9
A5
5
A11
NC
OE
A10
CE
Q7
Q6
A11
OE
A10
CE
Q7
A4
6
A3
7
A0~A14
ADDRESS
INPUTS
A2
8
9
25
256K BIT
CELL
MX27C256
A1
9
A0
10
11
12
13
14
MAXTRIX
Q6
Q0
Q1
Q2
GND
Q5
Q4
13
21
Q3
VCC
GND
VPP
14
17
20
PIN DESCRIPTION
8 x 13.4mm 28-TSOP(I)
SYMBOL
A0~A14
Q0~Q7
CE
PIN NAME
OE
A11
A9
22
23
24
25
26
27
28
1
21
20
19
18
17
16
15
14
13
12
11
10
9
A10
CE
Q7
Q6
Q5
Q4
Q3
GND
Q2
Q1
Q0
A0
Address Input
Data Input/Output
A8
Chip Enable Input
A13
A14
VCC
VPP
A12
A7
OE
Output Enable Input
Program Supply Voltage
No Internal Connection
Power Supply Pin (+5V)
Ground Pin
MX27C256
VPP
2
3
NC
A6
4
VCC
A5
5
A4
6
A1
GND
A3
7
8
A2
P/N: PM0203
REV. 5.6, AUG. 26, 2003
1
MX27C256
FUNCTIONAL DESCRIPTION
AUTO IDENTIFY MODE
THE PROGRAMMING OF THE MX27C256
Theautoidentifymodeallowsthereadingoutofabinary
code from an EPROM that will identify its manufacturer
and device type. This mode is intended for use by
programming equipment for the purpose of
automatically matching the device to be programmed
with its corresponding programming algorithm. This
mode is functional in the 25°C ± 5°C ambient
temperature range that is required when programming
the MX27C256.
When the MX27C256 is delivered, or it is erased, the
chip has all 256K bits in the "ONE" or HIGH state.
"ZEROs" are loaded into the MX27C256 through the
procedure of programming.
Forprogramming, thedatatobeprogrammedisapplied
with 8 bits in parallel to the data pins.
VCCmustbeappliedsimultaneouslyorbeforeVPP,and
removed simultaneously or after VPP. When
programming an MXIC EPROM, a 0.1uF capacitor is
required across VPP and ground to suppress spurious
voltage transients which may damage the device.
To activate this mode, the programming equipment
must force 12.0 ±0.5 (VH) on address line A9 of the
device. Two identifier bytes may then be sequenced
fromthedeviceoutputsbytogglingaddresslineA0from
VIL to VIH. All other address lines must be held at VIL
during auto identify mode.
FAST PROGRAMMING
Byte 0 ( A0 = VIL) represents the manufacturer code,
andbyte1(A0=VIH),thedeviceidentifiercode. Forthe
MX27C256, these two identifier bytes are given in the
Mode Select Table. All identifiers for manufacturer and
devicecodeswillpossessoddparity,withtheMSB(Q7)
defined as the parity bit.
Thedeviceissetupinthefastprogrammingmodewhen
the programming voltage VPP = 12.75V is applied, with
VCC = 6.25 V and OE = VIH (Algorithm is shown in
Figure 1). The programming is achieved by applying a
single TTL low level 100us pulse to the CE input after
addresses and data line are stable. If the data is not
verified, an additional pulse is applied for a maximum of
25 pulses. This process is repeated while sequencing
through each address of the device. When the
programmingmodeiscompleted,thedatainalladdress
is verified at VCC = VPP = 5V ±10%.
READ MODE
TheMX27C256hastwocontrolfunctions,bothofwhich
must be logically satisfied in order to obtain data at the
outputs. Chip Enable (CE) is the power control and
should be used for device selection. Output Enable
(OE) is the output control and should be used to gate
datatotheoutputpins,independentofdeviceselection.
Assuming that addresses are stable, address access
time(tACC)isequaltothedelayfromCEtooutput(tCE).
DataisavailableattheoutputstOEafterthefallingedge
ofOE,assumingthatCEhasbeenLOWandaddresses
have been stable for at least tACC - tOE.
PROGRAM INHIBIT MODE
Programming of multiple MX27C256s in parallel with
different data is also easily accomplished by using the
Program Inhibit Mode. Except for CE and OE, all like
inputs of the parallel MX27C256 may be common. A
TTL low-level program pulse applied to an MX27C256
CE input with VPP = 12.5 ±0.5 V and OE HIGH will
program that MX27C256. A high-level CE input inhibits
the other MX27C256s from being programmed.
STANDBY MODE
The MX27C256 has a CMOS standby mode which
reduces the maximum Vcc current to 100 uA. It is
placed in CMOS standby when CE is at VCC ±0.3 V.
The MX27C256 also has a TTL-standby mode which
reduces the maximum VCC current to 1.5 mA. It is
placed in TTL-standby when CE is at VIH. When in
standby mode, the outputs are in a high-impedance
state, independent of the OE input.
PROGRAM VERIFY MODE
Verification should be performed on the programmed
bits to determine that they were correctly programmed.
The verification should be performed with CE and OE
at VIL, and VPP at its programming voltage.
REV.5.6, AUG. 26, 2003
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MX27C256
TWO-LINE OUTPUT CONTROL FUNCTION
SYSTEM CONSIDERATIONS
To accommodate multiple memory connections, a two-
line control function is provided to allow for:
During the switch between active and standby
conditions, transient current peaks are produced on the
rising and falling edges of Chip Enable. The magnitude
of these transient current peaks is dependent on the
outputcapacitanceloadingofthedevice. Ataminimum,
a0.1uFceramiccapacitor(highfrequency,lowinherent
inductance) should be used on each device between
VCCandGNDtominimizetransienteffects. Inaddition,
to overcome the voltage drop caused by the inductive
effects of the printed circuit board traces on EPROM
arrays, a 4.7 uF bulk electrolytic capacitor should be
usedbetweenVccandGNDforeacheightdevices. The
location of the capacitor should be close to where the
power supply is connected to the array.
1. Low memory power dissipation,
2. Assurance that output bus contention will not
occur.
It is recommended that CE be decoded and used as the
primary device-selecting function, while OE be made a
common connection to all devices in the array and
connectedtotheREADlinefromthesystemcontrolbus.
This assures that all deselected memory devices are in
their low-power standby mode and that the output pins
are only active when data is desired from a particular
memory device.
MODE SELECT TABLE
PINS
MODE
CE
OE
VIL
VIH
X
A0
X
A9
X
VPP
VCC
VCC
VCC
VCC
VPP
VPP
VPP
VCC
VCC
OUTPUTS
DOUT
High Z
High Z
High Z
DIN
Read
VIL
Output Disable
Standby (TTL)
Standby (CMOS)
Program
VIL
X
X
VIH
X
X
VCC±0.3V
VIL
X
X
X
VIH
VIL
VIH
VIL
VIL
X
X
Program Verify
Program Inhibit
Manufacturer Code(3)
Device Code(3)
VIH
X
X
DOUT
High Z
C2H
VIH
X
X
VIL
VIL
VIH
VH
VH
VIL
10H
NOTES:
1. VH = 12.0 V ±0.5 V
2. X = Either VIH or VIL
3. A1 - A8 = A10 - A14 = VIL (For auto select)
4. See DC Programming characteristics for VPP voltage during programming.
REV.5.6, AUG. 26, 2003
P/N:PM0203
3
MX27C256
FIGURE 1. FAST PROGRAMMING FLOW CHART
START
ADDRESS = FIRST LOCATION
VCC = 6.25V
VPP = 12.75V
X = 0
PROGRAM ONE 100us PULSE
INCREMENT X
INTERACTIVE
SECTION
YES
X = 25?
NO
FAIL
VERIFY BYTE
?
PASS
NO
LAST ADDRESS
INCREMENT ADDRESS
FAIL
YES
VCC = VPP = 5.25V
VERIFY SECTION
FAIL
DEVICE FAILED
VERIFY ALL BYTES
?
PASS
DEVICE PASSED
REV.5.6, AUG. 26, 2003
P/N:PM0203
4
MX27C256
SWITCHING TEST CIRCUITS
DEVICE
UNDER
TEST
1.8K ohm
+5V
DIODES = IN3064
OR EQUIVALENT
CL
6.2K ohm
CL = 100 pF including jig capacitance(30pF for 45/55/70ns parts)
SWITCHING TEST WAVEFORMS
2.0V
0.8V
2.0V
0.8V
TEST POINTS
AC driving levels
OUTPUT
INPUT
AC TESTING: AC driving levels are 2.4V/0.4V for commercial grade, 3.0V/0V for industrial grade.
Input pulse rise and fall times are < 10ns.
1.5V
1.5V
TEST POINTS
AC driving levels
OUTPUT
INPUT
AC TESTING: (1) AC driving levels are 3.0V/0V for both commercial grade and industrial grade.
Input pulse rise and fall times are < 10ns.
(2) For MX27C256-45, MX27C256-55, MX27C256-70.
REV.5.6, AUG. 26, 2003
P/N:PM0203
5
MX27C256
ABSOLUTE MAXIMUM RATINGS
NOTICE:
RATING
VALUE
Stresses greater than those listed under ABSOLUTE
MAXIMUM RATINGS may cause permanent damage to the
device. This is a stress rating only and functional operation
of the device at these or any other conditions above those
indicated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions for
extended period may affect reliability.
Ambient Operating Temperature -40oC to 85oC
Storage Temperature
Applied Input Voltage
Applied Output Voltage
VCC to Ground Potential
A9 & Vpp
-65oC to 125oC
-0.5V to 7.0V
-0.5V to VCC + 0.5V
-0.5V to 7.0V
NOTICE:
-0.5V to 13.5V
Specifications contained within the following tables are sub-
ject to change.
DC/AC Operating Conditions for Read Operation
MX27C256
-45
-55
-70
-90
-10
-12
-15
Operating
Commercial 0°C to 70°C 0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C 0°C to 70°C 0°C to 70°C
Temperature Industrial
Vcc Power Supply
-45°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
DC CHARACTERISTICS
SYMBOL PARAMETER
MIN.
MAX.
UNIT
V
CONDITIONS
IOH = -0.4mA
IOL = 2.1mA
VOH
VOL
VIH
Output High Voltage
2.4
Output Low Voltage
Input High Voltage
Input Low Voltage
0.4
VCC + 0.5
0.8
V
2.0
-0.3
-10
-10
V
VIL
V
ILI
Input Leakage Current
Output Leakage Current
VCC Power-Down Current
VCC Standby Current
VCC Active Current
10
uA
uA
uA
mA
mA
uA
VIN = 0 to 5.5V
VOUT = 0 to 5.5V
CE = VCC ±0.3V
CE = VIH
ILO
10
ICC3
ICC2
ICC1
IPP
100
1.5
30
CE = VIL, f=5MHz, Iout =0mA
CE = OE = VIL, VPP = 5.5V
VPP Supply Current Read
10
CAPACITANCE TA = 25oC, f = 1.0 MHz (Sampled only)
SYMBOL
CIN
PARAMETER
MIN.
8
MAX.
12
UNIT
CONDITIONS
VIN = 0V
Input Capacitance
Output Capacitance
VPP Capacitance
pF
pF
pF
COUT
VPP
8
12
VOUT = 0V
VPP = 0V
18
25
REV.5.6, AUG. 26, 2003
P/N:PM0203
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MX27C256
AC CHARACTERISTICS
27C256-45
27C256-55
27C256-70
27C256-90
SYMBOL PARAMETER
MIN. MAX. MIN. MAX. MIN. MAX. MIN.
MAX. UNIT CONDITIONS
tACC
tCE
Address to Output Delay
45
45
22
55
55
30
70
70
35
90
90
40
ns
ns
ns
CE = OE = VIL
OE = VIL
Chip Enable to Output Delay
Output Enable to Output
Delay
tOE
CE = VIL
tDF
tOH
OE High to Output Float,
or CE High to Output Float
Output Hold from Address,
CE or OE which ever occurred
first
0
0
16
0
0
20
0
0
20
0
0
25
ns
ns
27C256-10
27C256-12
27C256-15
SYMBOL PARAMETER
MIN. MAX. MIN. MAX. MIN. MAX.
UNIT
ns
CONDITIONS
tACC
tCE
Address to Output Delay
100
100
45
120
120
50
150
150
55
CE = OE = VIL
OE = VIL
Chip Enable to Output Delay
Output Enable to Output
Delay
ns
tOE
ns
CE = VIL
tDF
tOH
OE High to Output Float,
or CE High to Output Float
Output Hold from Address,
CE or OE which ever occurred
first
0
0
30
0
0
35
0
0
50
ns
ns
DC PROGRAMMING CHARACTERISTICS TA = 25oC ±5°C
SYMBOL PARAMETER
MIN.
MAX.
UNIT
V
CONDITIONS
IOH = -0.40mA
IOL = 2.1mA
VOH
VOL
VIH
Output High Voltage
2.4
Output Low Voltage
0.4
VCC + 0.5
0.8
V
Input High Voltage
2.0
-0.3
-10
V
VIL
Input Low Voltage
V
ILI
Input Leakage Current
10
uA
V
VIN = 0 to 5.5V
VH
A9 Auto Select Voltage
11.5
12.5
40
ICC3
IPP2
VCC1
VPP1
VCC Supply Current(Program & Verify)
VPP Supply Current(Program)
Fast Programming Supply Voltage
Fast Programming Voltage
mA
mA
V
30
CE = VIL, OE = VIH
6.00
12.5
6.50
13.0
V
REV.5.6, AUG. 26, 2003
P/N:PM0203
7
MX27C256
AC PROGRAMMING CHARACTERISTICS TA = 25oC ±5°C
SYMBOL PARAMETER
MIN.
2.0
2.0
2.0
0
MAX.
UNIT
us
CONDITIONS
tAS
Address Setup Time
tOES
tDS
OE Setup Time
us
Data Setup Time
us
tAH
Address Hold Time
Data Hold Time
us
tDH
2.0
0
us
tDFP
tVPS
tVCS
tOE
Output Enable to Output Float Delay
VPP Setup Time
130
ns
2.0
2.0
us
VCC Setup Time
us
Data Valid from OE
PGM Program Pulse Width
150
105
ns
tPW
95
us
REV.5.6, AUG. 26, 2003
P/N:PM0203
8
MX27C256
WAVEFORMS
READ CYCLE
ADDRESS
INPUTS
DATA ADDRESS
tACC
CE
tCE
OE
tDF
DATA
OUT
VALID DATA
tOE
tOH
FAST PROGRAMMING ALGORITHM WAVEFORM
PROGRAM
PROGRAM VERIFY
VIH
Addresses
VIL
tAH
tAS
Hi-z
DATA OUT VALID
DATA
VPP
DATA IN STABLE
tDFP
tDS
tDH
VPP1
VCC
tVPS
tVCS
VCC1
VCC
VCC
CE
VIH
VIL
tOES
tOE
Max
tPW
VIH
VIL
OE
REV.5.6, AUG. 26, 2003
P/N:PM0203
9
MX27C256
ORDERING INFORMATION
PLASTIC PACKAGE
PART NO.
ACCESS TIME(ns) OPERATING
STANDBY
OPERATING
TEMPERATURE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
PACKAGE
CURRENT MAX.(mA)
CURRENT MAX.(uA)
MX27C256PC-45
MX27C256QC-45
MX27C256TC-45
MX27C256PC-55
MX27C256QC-55
MX27C256TC-55
MX27C256PC-70
MX27C256QC-70
MX27C256TC-70
MX27C256PC-90
MX27C256QC-90
MX27C256TC-90
MX27C256PC-10
MX27C256QC-10
MX27C256TC-10
MX27C256PC-12
MX27C256QC-12
MX27C256TC-12
MX27C256PC-15
MX27C256QC-15
MX27C256TC-15
MX27C256PI-45
MX27C256QI-45
MX27C256TI-45
MX27C256PI-55
MX27C256QI-55
MX27C256TI-55
MX27C256PI-70
MX27C256QI-70
MX27C256TI-70
MX27C256PI-90
MX27C256QI-90
MX27C256TI-90
MX27C256PI-10
MX27C256QI-10
MX27C256TI-10
MX27C256PI-12
MX27C256QI-12
MX27C256TI-12
MX27C256PI-15
MX27C256QI-15
MX27C256TI-15
45
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
28 Pin DIP
45
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
45
55
55
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
55
70
70
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
70
90
90
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
90
100
100
100
120
120
120
150
150
150
45
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
45
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
45
55
55
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
55
70
70
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
70
90
90
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
90
100
100
100
120
120
120
150
150
150
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
32 Pin PLCC
28 Pin TSOP(I)
28 Pin DIP
32 Pin PLCC
28 Pin TSOP(I)
REV.5.6, AUG. 26, 2003
P/N:PM0203
10
MX27C256
PACKAGE INFORMATION
REV.5.6, AUG. 26, 2003
P/N:PM0203
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MX27C256
REV.5.6, AUG. 26, 2003
P/N:PM0203
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MX27C256
REV.5.6, AUG. 26, 2003
P/N:PM0203
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MX27C256
REVISION HISTORY
Revision No. Description
Page
Date
5.0
1) Reduce operating current from 40mA to 30mA.
6/16/1997
2) Add 28-TSOP(I) and 28-SOP packages offering.
3) Eliminate Interactive Programming Mode.
1) IPP1 100uA ----> 10uA
Cancel ceramic DIP package type
Remove 28-pin SOP Package
Package Information format changed
Remove "ultraviolet erasable" wording
To modify Package Information
To modify 32-PLCC package information
A1: from 0.50mm(0.020 inch)/nom. to 0.58mm(0.023 inch)/nom.
from 0.66mm(0.026 inch)/nom. to 0.81mm(0.032 inch)/nom.
5.1
5.2
5.3
7/17/1997
P1,2,10,12 FEB/25/2000
P1,10
P11~13
P1
P11~13
P12
SEP/19/2001
5.4
5.5
5.6
APR/24/2002
NOV/19/2002
AUG/26/2003
REV.5.6, AUG. 26, 2003
P/N:PM0203
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MX27C256
MACRONIX INTERNATIONAL CO., LTD.
HEADQUARTERS:
TEL:+886-3-578-6688
FAX:+886-3-563-2888
EUROPE OFFICE:
TEL:+32-2-456-8020
FAX:+32-2-456-8021
JAPAN OFFICE:
TEL:+81-44-246-9100
FAX:+81-44-246-9105
SINGAPORE OFFICE:
TEL:+65-348-8385
FAX:+65-348-8096
TAIPEI OFFICE:
TEL:+886-2-2509-3300
FAX:+886-2-2509-2200
MACRONIX AMERICA, INC.
TEL:+1-408-453-8088
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