K9F1208B0CPCB00 [SAMSUNG]
64MX8 FLASH 2.7V PROM, 40ns, PDSO48, 20 X 12 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, TSOP1-48;型号: | K9F1208B0CPCB00 |
厂家: | SAMSUNG |
描述: | 64MX8 FLASH 2.7V PROM, 40ns, PDSO48, 20 X 12 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, TSOP1-48 可编程只读存储器 光电二极管 内存集成电路 |
文件: | 总38页 (文件大小:824K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
K9F1208X0C
INFORMATION IN THIS DOCUMENT IS PROVIDED IN RELATION TO SAMSUNG PRODUCTS,
AND IS SUBJECT TO CHANGE WITHOUT NOTICE.
NOTHING IN THIS DOCUMENT SHALL BE CONSTRUED AS GRANTING ANY LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE,
TO ANY INTELLECTUAL PROPERTY RIGHTS IN SAMSUNG PRODUCTS OR TECHNOLOGY. ALL
INFORMATION IN THIS DOCUMENT IS PROVIDED
ON AS "AS IS" BASIS WITHOUT GUARANTEE OR WARRANTY OF ANY KIND.
1. For updates or additional information about Samsung products, contact your nearest Samsung office.
2. Samsung products are not intended for use in life support, critical care, medical, safety equipment, or similar
applications where Product failure could result in loss of life or personal or physical harm, or any military or
defense application, or any governmental procurement to which special terms or provisions may apply.
* Samsung Electronics reserves the right to change products or specification without notice.
1
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Document Title
64M x 8 Bits NAND Flash Memory
Revision History
Revision No. History
Draft Date
Remark
0.0
0.1
0.2
0.3
Initial issue.
Nov. 10th 2005
July 13th 2006
Aug. 1st 2006
Oct. 12th 2006
Advance
2.7V part is added
Advance
Advance
Advance
Address of Read 2 is changed (A4~A7 : Don’t care -> Fixed "Low" )
1. Add tRPS/tRCS/tREAS parameter for status read
2. Add nWP timing guide
0.4
Nov. 14th 2006
Advance
1. Change from tRPS/tRCS/tREAS to tRPB/tRCB/tREAB parameter for
1.8V device busy state
0.5
1.0
1.1
Nov. 15th 2006
Dec. 28th 2006
June 18th 2007
Preliminary
Final
1. Sequential Row Read is added
1. tCRY is changed (50ns+tR(R/B) --> 5us)
1. Mode selection is modified ("CE don’t care" case)
Final
Note : For more detailed features and specifications including FAQ, please refer to Samsung’s Flash web site.
http://www.samsung.com/Products/Semiconductor/
The attached datasheets are prepared and approved by SAMSUNG Electronics. SAMSUNG Electronics CO., LTD. reserve the right
to change the specifications. SAMSUNG Electronics will evaluate and reply to your requests and questions about device. If you have
any questions, please contact the SAMSUNG branch office near you.
2
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
64M x 8 Bits NAND Flash Memory
PRODUCT LIST
Part Number
K9F1208R0C-J
K9F1208B0C-P
K9F1208U0C-P
K9F1208U0C-J
Vcc Range
1.65V ~ 1.95V
2.5V ~ 2.9V
Organization
PKG Type
FBGA
TSOP1
TSOP1
FBGA
x8
2.7V ~ 3.6V
FEATURES
• Voltage Supply
• Reliable CMOS Floating-Gate Technology
- 1.8V Device(K9F1208R0C) : 1.65V ~ 1.95V
- 2.7V Device(K9F1208B0C) : 2.5V ~ 2.9V
- 3.3V Device(K9F1208U0C) : 2.7V ~ 3.6V
• Organization
- Endurance
: 100K Program/Erase Cycles
(with 1bit/512Byte ECC)
- Data Retention : 10 Years
• Command Register Operation
- Memory Cell Array : (64M + 2M) x 8bits
- Data Register : (512 + 16) x 8bits
• Automatic Program and Erase
- Page Program : (512 + 16) x 8bits
- Block Erase : (16K + 512)Bytes
• Page Read Operation
• Unique ID for Copyright Protection
• Package
- K9F1208U0C-PCB0/PIB0 : Pb-Free Package
48 - Pin TSOP I (12 x 20 / 0.5 mm pitch)
- K9F1208X0C-JCB0/JIB0: Pb-Free Package
63-Ball FBGA(8.5 x 13 x 1.2mmt)
- K9F1208B0C-PCB0/PIB0 : Pb-Free Package
48 - Pin TSOP I (12 x 20 / 0.5 mm pitch)
- Page Size : (512 + 16)Bytes
- Random Access
: 15µs(Max.)
- Serial Page Access : 42ns(Min.)
• Fast Write Cycle Time
- Program time : 200µs(Typ.)
- Block Erase Time : 2ms(Typ.)
• Command/Address/Data Multiplexed I/O Port
• Hardware Data Protection
- Program/Erase Lockout During Power Transitions
GENERAL DESCRIPTION
Offered in 64Mx8bits, the K9F1208X0C is 512Mbit with spare 16Mbit capacity. The device is offered in 1.8V, 2.7V and 3.3V Vcc. Its
NAND cell provides the most cost-effective solutIon for the solid state mass storage market. A program operation can be performed in
typical 200µs on the 528-bytes and an erase operation can be performed in typical 2ms on a 16K-bytes block. Data in the page can
be read out at 42ns cycle time per byte. The I/O pins serve as the ports for address and data input/output as well as command input.
The on-chip write control automates all program and erase functions including pulse repetition, where required, and internal verifica-
tion and margining of data. Even the write-intensive systems can take advantage of the K9F1208X0C′s extended reliability of 100K
program/erase cycles by providing ECC(Error Correcting Code) with real time mapping-out algorithm.
The K9F1208X0C is an optimum solution for large nonvolatile storage applications such as solid state file storage and other portable
applications requiring non-volatility.
3
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
PIN CONFIGURATION (TSOP1)
K9F1208X0C-PCB0/PIB0
N.C
N.C
N.C
N.C
I/O7
I/O6
I/O5
I/O4
N.C
N.C
N.C
Vcc
Vss
N.C
N.C
N.C
I/O3
I/O2
I/O1
I/O0
N.C
N.C
N.C
N.C
N.C
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
N.C
2
N.C
3
N.C
4
N.C
5
N.C
6
R/B
7
RE
8
CE
9
N.C
10
N.C
11
Vcc
Vss
N.C
N.C
CLE
ALE
WE
WP
N.C
N.C
N.C
N.C
N.C
12
13
14
15
16
17
18
19
20
21
22
23
24
PACKAGE DIMENSIONS
48-PIN LEAD/LEAD FREE PLASTIC THIN SMALL OUT-LINE PACKAGE TYPE(I)
48 - TSOP1 - 1220AF
Unit :mm/Inch
20.00±0.20
0.787±0.008
#1
#48
#24
#25
1.00±0.05
0.039±0.002
0.05
0.002
MIN
1.20
0.047
MAX
18.40±0.10
0.724±0.004
0~8°
0.45~0.75
0.018~0.030
0.50
0.020
(
)
4
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
PIN CONFIGURATION (FBGA)
K9F1208X0C-JCB0/JIB0
1
2
3
4
5
6
N.C N.C
N.C N.C
N.C N.C
N.C
A
B
/WP ALE Vss /CE /WE R/B
NC
NC
NC
NC
/RE CLE NC
NC
NC
NC
NC
NC
NC
NC
NC
C
D
E
NC
NC
NC
NC NC
NC NC
NC NC
F
NC I/O0 NC
NC
NC
Vcc
G
H
NC I/O1 NC VccQ I/O5 I/O7
Vss I/O2 I/O3 I/O4 I/O6 Vss
N.C N.C
N.C N.C
N.C N.C
N.C N.C
Top View
5
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
63-Ball FBGA (measured in millimeters)
Top View
Bottom View
#A1 INDEX MARK(OPTIONAL)
A
8.50±0.10
0.80 x 9= 7.20
0.80 x 5= 4.00
0.80
8.50±0.10
B
6
5
4
3
2
1
#A1
(Datum A)
A
B
C
D
E
F
(Datum B)
G
H
63-∅0.45±0.05
∅
0.20
M A B
2.00
Side View
13.00±0.10
0.10MAX
0.45±0.05
6
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
PIN DESCRIPTION
Pin Name
Pin Function
DATA INPUTS/OUTPUTS
I/O0 ~ I/O7
CLE
The I/O pins are used to input command, address and data, and to output data during read operations. The I/
O pins float to high-z when the chip is deselected or when the outputs are disabled.
COMMAND LATCH ENABLE
The CLE input controls the activating path for commands sent to the command register. When active high,
commands are latched into the command register through the I/O ports on the rising edge of the WE signal.
ADDRESS LATCH ENABLE
ALE
The ALE input controls the activating path for address to the internal address registers. Addresses are
latched on the rising edge of WE with ALE high.
CHIP ENABLE
The CE input is the device selection control. When the device is in the Busy state, CE high is ignored, and
the device does not return to standby mode in program or erase opertion. Regarding CE control during read
operation, refer to ’Page read’ section of Device operation .
CE
READ ENABLE
RE
WE
WP
The RE input is the serial data-out control, and when active drives the data onto the I/O bus. Data is valid
tREA after the falling edge of RE which also increments the internal column address counter by one.
WRITE ENABLE
The WE input controls writes to the I/O port. Commands, address and data are latched on the rising edge of
the WE pulse.
WRITE PROTECT
The WP pin provides inadvertent write/erase protection during power transitions. The internal high voltage
generator is reset when the WP pin is active low.
READY/BUSY OUTPUT
The R/B output indicates the status of the device operation. When low, it indicates that a program, erase or
random read operation is in process and returns to high state upon completion. It is an open drain output and
does not float to high-z condition when the chip is deselected or when outputs are disabled.
R/B
POWER
Vcc
Vss
N.C
VCC is the power supply for device.
GROUND
NO CONNECTION
Lead is not internally connected.
DO NOT USE
Leave it disconnected.
DNU
NOTE : Connect all VCC and VSS pins of each device to common power supply outputs.
Do not leave VCC or VSS disconnected.
7
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Figure 1. K9F1208X0C FUNCTIONAL BLOCK DIAGRAM
VCC
VSS
X-Buffers
A9 - A25
512M + 16M Bits
Latches
NAND Flash
ARRAY
& Decoders
Y-Buffers
Latches
A0 - A7
& Decoders
(512 + 16)Bytes x 131,072
Page Register & S/A
Y-Gating
A8
Command
Command
Register
I/O Buffers & Latches
Global Buffers
VCC
VSS
CE
RE
WE
Control Logic
& High Voltage
Generator
I/0 0
I/0 7
Output
Driver
CLE ALE
WP
Figure 2. K9F1208X0C ARRAY ORGANIZATION
1 Block = 32 Pages
= (16K + 512) Bytes
1 Page = 528 Bytes
1 Block = 528 Bytes x 32 Pages
= (16K + 512) Bytes
1 Device = 528Bytes x 32Pages x 4,096 Blocks
= 528 Mbits
128K Pages
(=4,096 Blocks)
1st half Page Register
(=256 Bytes)
2nd half Page Register
(=256 Bytes)
8 bits
512Bytes
16 Bytes
16 Bytes
I/O 0 ~ I/O 7
Page Register
512 Bytes
I/O 0
A0
I/O 1
A1
I/O 2
A2
I/O 3
I/O 4
I/O 5
A5
I/O 6
A6
I/O 7
A7
1st Cycle
2nd Cycle
3rd Cycle
4th Cycle
A3
A12
A20
*L
A4
A13
A21
*L
Column Address
Row Address
(Page Address)
A9
A10
A18
*L
A11
A19
*L
A14
A22
*L
A15
A23
*L
A16
A24
*L
A17
A25
NOTE : Column Address : Starting Address of the Register.
00h Command(Read) : Defines the starting address of the 1st half of the register.
01h Command(Read) : Defines the starting address of the 2nd half of the register.
* A8 is set to "Low" or "High" by the 00h or 01h Command.
* L must be set to "Low".
* The device ignores any additional input of address cycles than reguired.
8
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Product Introduction
The K9F1208X0C is a 528Mbits(553,648,218 bits) memory organized as 131,072 rows(pages) by 528 columns. Spare sixteen col-
umns are located from column address of 512 to 527. A 528-bytes data register is connected to memory cell arrays accommodating
data transfer between the I/O buffers and memory during page read and page program operations. The memory array is made up of
16 cells that are serially connected to form a NAND structure. Each of the 16 cells resides in a different page. A block consists of the
32 pages formed two NAND structures. A NAND structure consists of 16 cells. Total 135,168 NAND structures reside in a block. The
program and read operations are executed on a page basis, while the erase operation is executed on a block basis. The memory
array consists of 4,096 separately erasable 16K-bytes blocks. It indicates that the bit by bit erase operation is prohibited on the
K9F1208X0C.
The K9F1208X0C has addresses multiplexed into 8 I/O's. This scheme dramatically reduces pin counts and allows systems
upgrades to future densities by maintaining consistency in system board design. Command, address and data are all written through
I/O's by bringing WE to low while CE is low. Data is latched on the rising edge of WE. Command Latch Enable(CLE) and Address
Latch Enable(ALE) are used to multiplex command and address respectively, via the I/O pins. The 64M byte physical space requires
26 addresses, thereby requiring four cycles for byte-level addressing : 1 cycle of column address, 3 cycles of row address, in that
order. Page Read and Page Program need the same four address cycles following the required command input. In Block Erase oper-
ation, however, only the 3 cycles of row address are used. Device operations are selected by writing specific commands into the
command register. Table 1 defines the specific commands of the K9F1208X0C.
Table 1. Command Sets
Acceptable Command
Function
1’st Cycle
2’nd Cycle
during Busy
(1)
Read 1
-
00h/01h
Read 2
50h
90h
FFh
80h
60h
41h
42h
43h
70h
7Ah
-
Read ID
-
Reset
-
O
Page Program
Block Erase
Block Protect 1
Block Protect 2
Block Protect 3
Read Status
10h
D0h
-
-
-
-
-
O
Read Protection Status
NOTE : 1. The 00h/01h command defines starting address of the 1st/2nd half of registers.
After data access on the 2nd half of register by the 01h command, the status pointer is automatically moved to the 1st half register(00h)
on the next cycle.
Caution : Any undefined command inputs are prohibited except for above command set of Table 1.
9
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
ABSOLUTE MAXIMUM RATINGS
Rating
Parameter
Symbol
Unit
1.8V Device
-0.6 to + 2.45
-0.6 to + 2.45
2.7V/3.3V Device
VCC
VIN
-0.6 to + 4.6
Voltage on any pin relative to VSS
V
-0.6 to + 4.6
VI/O
-0.6 to Vcc + 0.3 (< 2.45V)
-0.6 to Vcc + 0.3 (< 4.6V)
K9F1208X0C-XCB0
K9F1208X0C-XIB0
K9F1208X0C-XCB0
K9F1208X0C-XIB0
-10 to +125
Temperature Under
Bias
TBIAS
°C
-40 to +125
-65 to +150
5
Storage Temperature
TSTG
IOS
°C
mA
Short Circuit Current
NOTE :
1. Minimum DC voltage is -0.6V on input/output pins. During transitions, this level may undershoot to -2.0V for periods <30ns.
Maximum DC voltage on input/output pins is VCC+0.3V which, during transitions, may overshoot to VCC+2.0V for periods <20ns.
2. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to the conditions
as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
RECOMMENDED OPERATING CONDITIONS
(Voltage reference to GND at the condision of K9F1208X0C-XCB0 : TA=0 to 70°C or K9F1208X0C-XIB0 : TA=-40 to 85°C)
1.8V(K9F1208R0C)
2.7V(K9F1208B0C)
3.3V(K9F1208U0C)
Parameter
Symbol
Unit
Min
Typ.
1.8
0
Max
Min
Typ.
2.7
0
Max
Min
Typ.
3.3
0
Max
VCC
VSS
1.65
0
1.95
0
2.5
0
2.9
0
2.7
0
3.6
0
V
V
Supply Voltage
DC AND OPERATING CHARACTERISTICS (Recommended operating conditions otherwise noted.)
K9F1208X0C
Uni
t
Parameter
Symbol
Test Conditions
1.8V
2.7V
3.3V
Min Typ Max Min Typ Max Min Typ Max
tRC=42ns, CE=VIL,
IOUT=0mA
Sequential
Read
ICC1
-
8
20
-
10 20
-
10 20
Operating
Current
Program
Erase
ICC2
ICC3
ISB1
-
-
-
-
8
8
-
20
20
1
-
-
-
10 20
10 20
-
-
-
10 20
10 20
mA
-
CE=VIH, WP=0V/VCC
Stand-by Current(TTL)
Stand-by Current(CMOS)
Input Leakage Current
Output Leakage Current
-
1
-
1
CE=VCC-0.2, WP=0V/VCC
VIN=0 to Vcc(max)
ISB2
ILI
-
-
-
10
-
50
-
-
-
10 50
-
-
-
10 50
±10
±10
-
-
±10
±10
-
-
±10
±10
VCC
µA
ILO
VOUT=0 to Vcc(max)
-
VCC
-0.4
VCC
-0.4
VCC
VCC
+0.3
VIH
VIL
Input High Voltage
-
-
-
-
2.0
-
-
+0.
3
+0.3
Input Low Voltage, All inputs
-
-0.3
0.4 -0.3
0.5 -0.3
0.8
K9F1208R0C: IOH=-100µA
K9F1208B0C: IOH=-100µA
K9F1208U0C: IOH=-400µA
VCC
-0.1
VCC
V
VOH
Output High Voltage Level
Output Low Voltage Level
-
-
-
-
2.4
-
-
-0.4
K9F1208R0C: IOL=100µA
K9F1208B0C: IOL=100µA
K9F1208U0C: IOL=2.1mA
VOL
-
-
0.1
-
-
-
0.4
-
-
-
0.4
-
IOL(R/B) VOL=0.4V
Output Low Current(R/B)
3
4
3
4
8
10
mA
Notes :
1. Typical values are measured at Vcc=3.3V, TA=25°C. And not 100% tested.
10
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
VALID BLOCK
Parameter
Symbol
Min
Typ.
Max
Unit
Valid Block Number
NVB
4,026
-
4,096
Blocks
NOTE :
1. The K9F1208X0C may include invalid blocks when first shipped. Additional invalid blocks may develop while being used. The number of valid blocks
is presented with both cases of invalid blocks considered. Invalid blocks are defined as blocks that contain one or more bad bits. Do not erase or
program factory-marked bad blocks. Refer to the attached technical notes for a appropriate management of invalid blocks.
2. The 1st block, which is placed on 00h block address, is guaranteed to be a valid block up to 1K program/erase cycles with 1bit/512Byte ECC.
3. Minimum 1,004 valid blocks are guaranteed for each contiguous 128Mb memory space.
AC TEST CONDITION
(K9F1208X0C-XCB0 :TA=0 to 70°C, K9F1208X0C-XIB0:TA=-40 to 85°C).
Value
Parameter
K9F1208R0C
K9F1208B0C
0V to Vcc
5ns
K9F1208U0C
0.4V to 2.4V
5ns
0V to VCC
Input Pulse Levels
Input Rise and Fall Times
5ns
VCC/2
Input and Output Timing Levels
K9F1208R0C:Output Load (Vcc:1.8V +/-10%)
Vcc/2
1.5V
1 TTL GATE and
CL=100pF
K9F1208B0C:Output Load (Vcc:2.7V +/-10%) 1 TTL GATE and CL=30pF 1 TTL GATE and CL=30pF
K9F1208U0C:Output Load (Vcc:3.3V +/-10%)
K9F1208U0C:Output Load (Vcc:3.0V +/-10%)
-
-
1 TTL GATE and CL=50pF
CAPACITANCE(TA=25°C, VCC=1.8V/2.7V/3.3V, f=1.0MHz)
Item
Symbol
Test Condition
VIL=0V
Min
Max
Unit
pF
Input/Output Capacitance
Input Capacitance
CI/O
-
-
10
10
CIN
VIN=0V
pF
NOTE : Capacitance is periodically sampled and not 100% tested.
MODE SELECTION
CLE
H
L
ALE
L
CE
L
WE
RE
H
WP
Mode
Command Input
X
Read Mode
Write Mode
H
L
L
H
X
Address Input (4 clocks)
Command Input
H
L
L
H
H
H
L
L
H
H
Address Input (4 clocks)
L
L
H
H
Data Input
Data Output
L
L
L
H
H
X
X
X
X
X
X
L
L
L
H
H
X
X
X
X
X
During Read (Busy) on K9F1208X0C_P
During Read (Busy) except on K9F1208X0C_P
During Program (Busy)
X
X
X
X
X
X
H
X
X
X
H
X
X
H
L
During Erase (Busy)
X(1)
X
X
Write Protect
(2)
X
Stand-by
0V/VCC
NOTE : 1. X can be VIL or VIH.
2. WP should be biased to CMOS high or CMOS low for standby.
11
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Program / Erase Characteristics
Parameter
Symbol
Min
Typ
Max
500
1
Unit
µs
(1)
Program Time
-
-
-
-
200
tPROG
Main Array
Spare Array
-
-
cycle
cycle
ms
Number of Partial Program Cycles
in the Same Page
Nop
2
Block Erase Time
tBERS
2
3
NOTE NOTE: 1.Typical Program time is defined as the time within which more than 50% of the whole pages are programmed at Vcc of 3.3V and 25’C
AC TIMING CHARACTERISTICS FOR COMMAND / ADDRESS / DATA INPUT
Parameter
Symbol
tCLS
Min
21
5
Max
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CLE setup Time
CLE Hold Time
CE setup Time
CE Hold Time
-
-
-
-
-
-
-
-
-
-
-
tCLH
tCS
31
5
tCH
(1)
WE Pulse Width
ALE setup Time
ALE Hold Time
Data setup Time
Data Hold Time
Write Cycle Time
WE High Hold Time
21
21
5
tWP
tALS
tALH
tDS
20
5
tDH
tWC
tWH
42
15
NOTE: The transition of the corresponding control pins must occur only once while WE is held low.
12
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
AC CHARACTERISTICS FOR OPERATION
Parameter
Data Transfer from Cell to Register
ALE to RE Delay
Symbol
tR
Min
-
Max
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
15
tAR
10
10
20
21
-
-
CLE to RE Delay
tCLR
tRR
-
Ready to RE Low
-
RE Pulse Width
tRP
-
WE High to Busy
tWB
100
Read Cycle Time
tRC
42
-
-
RE Access Time
tREA
tCEA
tRHZ
tCHZ
tCSD
tOH
30
CE Access Time
-
35
RE High to Output Hi-Z
CE High to Output Hi-Z
CE High to ALE or CLE Don’t Care
RE or CE High to Output hold
RE High Hold Time
-
30
-
20
10
15
15
0
-
-
tREH
tIR
-
Output Hi-Z to RE Low
-
WE High to RE Low
tWHR
tRST
60
-
-
5/10/500(1)
Device resetting time(Read/Program/Erase)
RE Pulse Width during Busy State
Read Cycle Time during Busy State
RE Access Time during Busy State
(2)
35
50
-
-
-
tRPB
(2)
tRCB
(2)
40
tREAB
Parameter
Symbol
Min
Max
100
5
Uni
ns
Last RE High to Busy(at sequential read)
tRB
-
-
K9F1208X0C-P only
CE High to Ready(in case of interception by CE at read)
CE High Hold Time(at the last serial read)(4)
tCRY
tCEH
µs
100
-
ns
NOTE: 1. If reset command(FFh) is written at Ready state, the device goes into Busy for maximum 5us.
2. This parameter (tRPB/tRCB/tREAB) must be used only for 1.8V device.
3. The time to Ready depends on the value of the pull-up resistor tied R/B pin.
13
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
NAND Flash Technical Notes
Initial Invalid Block(s)
Initial invalid blocks are defined as blocks that contain one or more initial invalid bits whose reliability is not guaranteed by Samsung.
The information regarding the initial invalid block(s) is so called as the initial invalid block information. Devices with initial invalid
block(s) have the same quality level as devices with all valid blocks and have the same AC and DC characteristics. An initial invalid
block(s) does not affect the performance of valid block(s) because it is isolated from the bit line and the common source line by a
select transistor. The system design must be able to mask out the initial invalid block(s) via address mapping. The 1st block, which is
placed on 00h block address, is guaranteed to be a valid block up to 1K program/erase cycles with 1bit/512Byte ECC.
Identifying Initial Invalid Block(s)
All device locations are erased(FFh) except locations where the initial invalid block(s) information is written prior to shipping. The
initial invalid block(s) status is defined by the 6th byte in the spare area. Samsung makes sure that either the 1st or 2nd page of
every initial invalid block has non-FFh data at the column address of 517. Since the initial invalid block information is also erasable
in most cases, it is impossible to recover the information once it has been erased. Therefore, the system must be able to recognize
the initial invalid block(s) based on the initial invalid block information and create the initial invalid block table via the following sug-
gested flow chart(Figure 3). Any intentional erasure of the initial invalid block information is prohibited.
Start
Set Block Address = 0
Increment Block Address
Check "FFh" at the column address 517
*
of the 1st and 2nd page in the block
No
Create (or update)
Initial Invalid Block(s) Table
Check "FFh" ?
Yes
No
Last Block ?
Yes
End
Figure 3. Flow chart to create initial invalid block table.
14
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
NAND Flash Technical Notes (Continued)
Error in write or read operation
Within its life time, the additional invalid blocks may develop with NAND Flash memory. Refer to the qualification report for the block
failure rate.The following possible failure modes should be considered to implement a highly reliable system. In the case of status
read failure after erase or program, block replacement should be done. Because program status fail during a page program does not
affect the data of the other pages in the same block, block replacement can be executed with a page-sized buffer by finding an
erased empty block and reprogramming the current target data and copying the rest of the replaced block. In case of Read, ECC
must be employed. To improve the efficiency of memory space, it is recommended that the read failure due to single bit error should
be reclaimed by ECC without any block replacement. The block failure rate in the qualification report does not include those
reclaimed blocks.
Failure Mode
Erase Failure
Detection and Countermeasure sequence
Status Read after Erase --> Block Replacement
Status Read after Program --> Block Replacement
Verify ECC -> ECC Correction
Write
Read
Program Failure
Single Bit Failure
: Error Correcting Code --> Hamming Code etc.
Example) 1bit correction & 2bits detection
ECC
Program Flow Chart
Start
Write 80h
Write Address
Write Data
Write 10h
Read Status Register
No
I/O 6 = 1 ?
or R/B = 1 ?
Yes
*
No
Program Error
I/O 0 = 0 ?
Yes
Program Completed
: If program operation results in an error, map out
the block including the page in error and copy the
target data to another block.
*
15
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
NAND Flash Technical Notes (Continued)
Erase Flow Chart
Read Flow Chart
Start
Start
Write 60h
Write 00h
Write Block Address
Write Address
Read Data
Write D0h
Read Status Register
ECC Generation
No
No
I/O 6 = 1 ?
or R/B = 1 ?
Reclaim the Error
Verify ECC
Yes
Yes
*
No
Page Read Completed
Erase Error
I/O 0 = 0 ?
Yes
Erase Completed
: If erase operation results in an error, map out
the failing block and replace it with another block.
*
Block Replacement
Block A
1st
2
{
(n-1)th
nth
an error occurs.
(page)
Buffer memory of the controller.
Block B
1st
1
{
(n-1)th
nth
(page)
* Step1. When an error happens in the nth page of the Block ’A’ during erase or program operation.
* Step2. Copy the nth page data of the Block ’A’ in the buffer memory to the nth page of another free block. (Block ’B’)
* Step3. Then, copy the data in the 1st ~ (n-1)th page to the same location of the Block ’B’.
* Step4. Do not further erase Block ’A’ by creating an ’invalid Block’ table or other appropriate scheme.
16
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Pointer Operation of K9F1208X0C
Samsung NAND Flash has three address pointer commands as a substitute for the two most significant column addresses. ’00h’
command sets the pointer to ’A’ area(0~255byte), ’01h’ command sets the pointer to ’B’ area(256~511byte), and ’50h’ command sets
the pointer to ’C’ area(512~527byte). With these commands, the starting column address can be set to any of a whole
page(0~527byte). ’00h’ or ’50h’ is sustained until another address pointer command is inputted. ’01h’ command, however, is effective
only for one operation. After any operation of Read, Program, Erase, Reset, Power_Up is executed once with ’01h’ command, the
address pointer returns to ’A’ area by itself. To program data starting from ’A’ or ’C’ area, ’00h’ or ’50h’ command must be inputted
before ’80h’ command is written. A complete read operation prior to ’80h’ command is not necessary. To program data starting from
’B’ area, ’01h’ command must be inputted right before ’80h’ command is written.
"A" area
"B" area
"C" area
(00h plane)
(01h plane)
(50h plane)
256 Bytes
256 Bytes
16 Bytes
Table 2. Destination of the pointer
Command
Pointer position
Area
00h
01h
50h
0 ~ 255 byte
256 ~ 511 byte
512 ~ 527 byte
1st half array(A)
2nd half array(B)
spare array(C)
"A"
"B"
"C"
Internal
Page Register
Pointer select
commnad
(00h, 01h, 50h)
Pointer
Figure 4. Block Diagram of Pointer Operation
(1) Command input sequence for programming ’A’ area
The address pointer is set to ’A’ area(0~255), and sustained
Address / Data input
Address / Data input
00h
80h
10h
00h
80h
10h
’A’,’B’,’C’ area can be programmed.
’00h’ command can be omitted.
It depends on how many data are inputted.
(2) Command input sequence for programming ’B’ area
The address pointer is set to ’B’ area(256~511), and will be reset to
’A’ area after every program operation is executed.
Address / Data input
Address / Data input
80h 10h
01h
80h
10h
01h
’B’, ’C’ area can be programmed.
It depends on how many data are inputted.
’01h’ command must be rewritten before
every program operation
(3) Command input sequence for programming ’C’ area
The address pointer is set to ’C’ area(512~527), and sustained
Address / Data input
Address / Data input
80h 10h
50h
80h
10h
50h
Only ’C’ area can be programmed.
’50h’ command can be omitted.
17
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
System Interface Using CE don’t-care.
For an easier system interface, CE may be inactive during the data-loading or sequential data-reading as shown below. The internal
528bytes page registers are utilized as separate buffers for this operation and the system design gets more flexible. In addition, for
voice or audio applications which use slow cycle time on the order of u-seconds, de-activating CE during the data-loading and read-
ing would provide significant savings in power consumption.
Figure 5. Program Operation with CE don’t-care.
CLE
CE don’t-care
CE
WE
ALE
80h
Start Add.(4Cycle)
Data Input
Data Input
10h
I/OX
tCH
tCEA
tCS
CE
CE
tREA
RE
tWP
WE
I/OX
out
Figure 6. Read Operation with CE don’t-care.
On K9F1208X0C-P
CE must be held
low during tR
CLE
CE don’t-care
CE
RE
ALE
tR
R/B
WE
Data Output(sequential)
I/OX
00h
Start Add.(4Cycle)
18
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
* Command Latch Cycle
CLE
tCLH
tCH
tCLS
tCS
CE
tWP
WE
tALS
tALH
ALE
I/OX
tDH
tDS
Command
* Address Latch Cycle
tCLS
CLE
tCS
tWC
tWC
tWC
CE
tWP
tWP
tWP
tWP
WE
tWH
tALH
tWH
tALH
tWH
tALH
tALH
tALS
tALS
tALS
tALS
ALE
tDH
tDH
tDH
tDH
tDS
tDS
tDS
tDS
A0~A7
A9~A16
A17~A24
A25~A26
I/OX
19
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
* Input Data Latch Cycle
tCLH
CLE
tCH
CE
tWC
ALE
tALS
tWP
tWP
tWP
WE
tWH
tDH
tDH
tDH
tDS
tDS
tDS
I/Ox
DIN n
DIN 0
DIN 1
* Serial access Cycle after Read(CLE=L, WE=H, ALE=L)
tRC
CE
tCHZ*
tOH
tREH
tREA
tREA
tREA
RE
tRHZ*
tOH
tRHZ*
I/Ox
Dout
Dout
Dout
tRR
R/B
NOTES : Transition is measured ±200mV from steady state voltage with load.
This parameter is sampled and not 100% tested.
20
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Status Read Cycle (During Ready State)
tCLR
CLE
tCLS
tCLH
tCS
CE
tCH
tWP
WE
tCEA
tCHZ
tOH
tWHR
RE
tRP
tRHZ
tOH
tDH
tREA
tDS
tIR
Status Output
I/OX
R/B
70h/7Ah
Status Read Cycle (During Busy State)
tCLR
CLE
tCLS
tCLH
tCS
CE
tCH
tWP
WE
tCEA
tCHZ
tOH
tWHR
RE
tRPB
tRHZ
tOH
tDH
tREAB
tDS
tIR
Status Output
I/OX
R/B
70h/7Ah
21
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
READ1 OPERATION (READ ONE PAGE)
CLE
1)
tCEH
On K9F1208X0C-P
CE must be held
low during tR
CE
tCHZ
tOH
tWC
WE
tWB
tCRY
tAR
ALE
tRHZ
tOH
tR
tRC
RE
N Address
tRR
A9 ~ A16
A17 ~ A24
Dout N+2
Dout N+1
00h or 01h A0 ~ A7
Dout N
Dout m
tRB
A25
I/OX
R/B
Column
Address
Page(Row)
Address
Busy
1)
X8 device : m = 528 , Read CMD = 00h or 01h
NOTES : 1) is only valid on K9F1208X0C-P
Read1 Operation (Intercepted by CE)
CLE
On K9F1208U0C-P
CE must be held
low during tR
CE
WE
ALE
RE
tWB
tCHZ
tOH
tAR
tR
tRC
tRR
A9 ~ A16 A17 ~ A24
Dout N+2
00h or 01h A0 ~ A7
Dout N
Dout N+1
A25
I/OX
R/B
Page(Row)
Address
Column
Address
Busy
22
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Read2 Operation (Read One Page)
CLE
CE
On K9F1208X0C-P
CE must be held
low during tR
WE
ALE
RE
tR
tWB
tAR
tRR
Dout
n+M
50h
A9 ~ A16 A17 ~ A24
n+m
A0 ~ A7
A25
I/OX
R/B
Selected
Row
M Address
A0~A3 : Valid Address
A4~A7 : Don′t care
16
512
Start
address M
Sequential Row Read Operation (Within a Block)
CLE
CE
WE
ALE
RE
Dout
N
Dout
N+1
Dout
527
Dout
0
Dout
1
Dout
527
00h
A0 ~ A7 A9 ~ A16
A17 ~ A24
A25
I/OX
R/B
Ready
Busy
Busy
M
M+1
Output
N
Output
23
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Page Program Operation
CLE
CE
tWC
tWC
tWC
WE
ALE
RE
tPROG
tWB
Din
N
Din
527
A25
10h
80h
A0 ~ A7 A9 ~ A16 A17 ~ A24
70h
I/O0
I/OX
R/B
Sequential Data
Input Command
Column
Program
Command
1 up to 528 Byte Data
Serial Input
Read Status
Command
Page(Row)
Address
Address
I/O0=0 Successful Program
I/O0=1 Error in Program
Block Erase Operation (Erase One Block)
CLE
CE
tWC
WE
ALE
RE
tBERS
tWB
60h
A9 ~ A16 A17 ~ A24
DOh
70h
I/O 0
A25
I/OX
R/B
Page(Row)
Address
Busy
I/O0=0 Successful Erase
Read Status I/O0=1 Error in Erase
Command
Erase Setup Command
Erase Command
24
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Read ID Operation
CLE
CE
WE
ALE
RE
tREA
3Fh
00h
ECh
76h
5Ah
90h
I/OX
Read ID Command
Maker Code Device Code
Address. 1cycle
ID Defintition Table
90 ID : Access command = 90H
Value
Description
1st Byte
2nd Byte
ECh
76h
5Ah
3Fh
Maker Code
Device Code
Don’t support Copy Back Operation
Don’t support Multi Plane Operation
3
4
rd Byte
th Byte
25
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Device Operation
PAGE READ
Upon initial device power up, the device defaults to Read1 mode. This operation is also initiated by writing 00h to the command regis-
ter along with four address cycles. Once the command is latched, it does not need to be written for the following page read operation.
Three types of operations are available : random read, serial page read and sequential row read.
The random read mode is enabled when the page address is changed. The 528 bytes of data within the selected page are transferred
to the data registers in less than 15µs(tR). The system controller can detect the completion of this data transfer(tR) by analyzing the
output of R/B pin. CE must be held low while in busy for K9F1208X0C-PXB0, while CE is don’t-care with K9F1208X0C-JXB0. If CE
goes high before the device returns to Ready, the random read operation is interrupted and Busy returns to Ready as the defined by
tCRY. Since the operation was aborted, the serial page read does not output valid data. Once the data in a page is loaded into the reg-
isters, they may be read out in 42ns cycle time by sequentially pulsing RE. High to low transitions of the RE clock output the data stat-
ing from the selected column address up to the last column address.
The way the Read1 and Read2 commands work is like a pointer set to either the main area or the spare area. The spare area of 512
to 527 bytes may be selectively accessed by writing the Read2 command. Addresses A0 to A3 set the starting address of the spare
area while addresses A4 to A7 are ignored. The Read1 command(00h/01h) is needed to move the pointer back to the main area. Fig-
ures 7 to 10 show typical sequence and timings for each read operation.
Sequential Row Read is available only on K9F1208X0C-P :
After the data of last column address is clocked out, the next page is automatically selected for sequential row read. Waiting 15µs
again allows reading the selected page. The sequential row read operation is terminated by bringing CE high. Unless the operation
is aborted, the page address is automatically incremented for sequential row read as in Read1 operation and spare sixteen bytes of
each page may be sequentially read. The Sequential Read 1 and 2 operation is allowed only within a block and after the last page of
a block is readout, the sequential read operation must be terminated by bringing CE high. When the page address moves onto the
next block, read command and address must be given. Figures 9, 10 show typical sequence and timings for sequential row read
operation.
26
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Figure 7. Read1 Operation
CLE
On K9F1208X0C-P
CE must be held low during tR
CE
WE
ALE
tR
R/B
RE
00h
Start Add.(4Cycle)
A0 ~ A7 & A9 ~ A25
Data Output(Sequential)
I/O0~7
(00h Command)
Main array
(01h Command)
1)
1st half array 2st half array
Data Field
Spare Field
Data Field
Spare Field
NOTE :
1) After data access on 2nd half array by 01h command, the start pointer is automatically moved to 1st half array (00h) at next cycle.
27
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Figure 8. Read2 Operation
CLE
On K9F1208X0C-P
CE
CE must be held low during tR
WE
ALE
R/B
RE
tR
50h
Data Output(Sequential)
Spare Field
Start Add.(4Cycle)
I/OX
A0 ~ A3 & A9 ~ A25
(A4 ~ A7 : Fixed "Low")
Main array
Data Field
Spare Field
28
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Figure 9. Sequential Row Read1 Operation (only for K9F1208X0C-P valid within a block)
tR
tR
tR
R/B
I/OX
Data Output
1st
Data Output
Data Output
00h
01h
Start Add.(4Cycle)
A0 ~ A7 & A9 ~ A25
2nd
(528 Byte)
Nth
(528 Byte)
( 00h Command)
( 01h Command)
1st half array
2nd half array
1st half array
2nd half array
1st
1st
2nd
Nth
Block
2nd
Nth
Data Field
Spare Field
Data Field
Spare Field
The Sequential Read 1 and 2 operation is allowed only within a block and after the last page of a block is read-
out, the sequential read operation must be terminated by bringing CE high. When the page address moves onto
the next block, read command and address must be given.
Figure 10. Sequential Row Read2 Operation (only for K9F1208X0C-P valid within a block)
tR
tR
tR
R/B
Start Add.(4Cycle)
A0 ~ A3 & A9 ~ A25
Data Output
1st
I/OX
50h
Data Output
Data Output
2nd
(16Byte)
Nth
(16Byte)
(A4 ~ A7 :
Don’t Care)
1st
Block
Nth
Data Field
Spare Field
29
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
PAGE PROGRAM
The device is programmed basically on a page basis, but it does allow multiple partial page programing of a byte or consecutive bytes
up to 528 byte, in a single page program cycle. The number of consecutive partial page programming operation within the same page
without an intervening erase operation must not exceed 1 for main array and 2 for spare array. The addressing may be done in any
random order in a block. A page program cycle consists of a serial data loading period in which up to 528 bytes of data may be loaded
into the page register, followed by a non-volatile programming period where the loaded data is programmed into the appropriate cell.
Serial data loading can be started from 2nd half array by moving pointer. About the pointer operation, please refer to the attached
technical notes.
The serial data loading period begins by inputting the Serial Data Input command(80h), followed by the four cycle address input and
then serial data loading. The bytes other than those to be programmed do not need to be loaded.The Page Program confirm com-
mand(10h) initiates the programming process. Writing 10h alone without previously entering the serial data will not initiate the pro-
gramming process. The internal write state control automatically executes the algorithms and timings necessary for program and
verify, thereby freeing the system controller for other tasks. Once the program process starts, the Read Status Register command
may be entered, with RE and CE low, to read the status register. The system controller can detect the completion of a program cycle
by monitoring the R/B output, or the Status bit(I/O 6) of the Status Register. Only the Read Status command and Reset command are
valid while programming is in progress. When the Page Program is complete, the Write Status Bit(I/O 0) may be checked(Figure 11).
The internal write verify detects only errors for "1"s that are not successfully programmed to "0"s. The command register remains in
Read Status command mode until another valid command is written to the command register.
Figure11. Program Operation
tPROG
R/B
Pass
I/O0~7
80h
Address & Data Input
I/O0
Fail
10h
70h
A0 ~ A7 & A9 ~ A25
528 Bytes Data
BLOCK ERASE
The Erase operation is done on a block(16K Bytes) basis. Block address loading is accomplished in three cycles initiated by an
Erase Setup command(60h). Only address A14 to A26 is valid while A9 to A13 is ignored. The Erase Confirm command(D0h) following
the block address loading initiates the internal erasing process. This two-step sequence of setup followed by execution command
ensures that memory contents are not accidentally erased due to external noise conditions.
At the rising edge of WE after the erase confirm command input, the internal write controller handles erase and erase-verify. When
the erase operation is completed, the Write Status Bit(I/O 0) may be checked. Figure 8 details the sequence.
Figure 12. Block Erase Operation
tBERS
R/B
Pass
I/OX
60h
I/O0
Fail
70h
Address Input(3Cycle)
Block Add. : A14 ~ A25
D0h
30
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
BLOCK PROTECT
Each block is protected from programming and erasing, controlled by the protect flag written in a specified area in the block. Block
Proctect opreation is initiated by wirting 4xh-80h-10h to the command register along with four address cycles. Only address A14 to
A26 is valid while A0 to A13 is fixed as 00h. The data must not be loaded. Once the Block Protect opreation starts, the Read Status
Register command may be entered, with RE and CE low, to read the status register. The system controller can detect the completion
of Page Program operation for protecting a block by monitoring the R/B output, or the Status bit(I/O 6) of the Status Register. Only the
Read Status command and Reset command are valid while Block Protect operation is in progress. But, if Reset command is inputted
while Block Protect operation is in progress, the block will not be guaranteed whether it is protected or not. When the Page Program
operation for protecting a block is completed, the Write Status Bit(I/O 0) may be checked(Figure 13). The command register remains
in Read Status command mode until another valid command is written to the command register.
When programming is prohibited by 41h command, the protect flag and the data of protected block can be erased by Block Erase
operation. Once erasing is prohibited by 42h/43h command, the protect flag and the data of protected block can not be erased. If
80h-10h is written to command register along with four address cycles at the program protected block or at the program/erase pro-
tected block, and if 60h-D0h is written to command register along with three address cycles at the program/erase protected block,
the R/B pin changes to low for tR. The Block Protect operation must not be excuted on the aleady protected block. The Block Protect
operation will be aborted by Reset command(FFh). The Block Protect operation can only be used from first block to 200th block.
The device contains a Status Register which may be used to read out the state of the selected block. After writing 7Ah command to
the command register, a read cycle outputs the content of the Status Register to the I/O pins on the falling edge of CE or RE, which-
ever occurs last(Figure 14). Refer to table 3 for specific Status Register definitions. The command register remains in Status Read
mode until further commands are issued to it.
Three commands are provided to protect the block.
41h : Programming is prohibited
42h : Erasing is prohibited
43h : Both programming and erasing are prohibited
Figure 13. Block Protect Operation
tPROG
R/B
Pass
4Xh
80h
Address Input(4Cycle)
I/O0
I/OX
10h
70h
FFh
FFh
A0 ~ A7 : 00h Fix
A9 ~ A13 : 00h Fix
A14 ~ A25 : 0 to 4095
Fail
31
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Figure 14. Read Block Status
CLE
ALE
WE
00h
A0 ~ A7 A9 ~ A16
A25
7Ah
Status
A17 ~ A24
I/OX
A0~7 : 00h, A9~13 : 0 fixed, A14~25 : 0 to 4095
RE
tR
R/B
Table 3. Status Register Definition for 7Ah Command
I/O
Status
Programming Protect
Erasing Protect
Not use
Definition
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
Not protected : "0"
Not protected : "0"
Don’t -cared
Protected : "1"
Protected : "1"
Not Use
Don’t -cared
Not Use
Don’t -cared
Not Use
Don’t -cared
Device Operation
Write Protect
Busy: "0"
Ready : "1"
Protected : "0"
Not protect : "1"
NOTE :
1. I/Os defined ’Not use’ are recommended to be masked out when Read Status is being executed.
32
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
READ STATUS
The device contains a Status Register which may be read to find out whether program or erase operation is completed, and whether
the program or erase operation is completed successfully. After writing 70h command to the command register, a read cycle outputs
the content of the Status Register to the I/O pins on the falling edge of CE or RE, whichever occurs last. This two line control allows
the system to poll the progress of each device in multiple memory connections even when R/B pins are common-wired. RE or CE
does not need to be toggled for updated status. Refer to table 4 for specific Status Register definitions. The command register
remains in Status Read mode until further commands are issued to it. Therefore, if the status register is read during a random read
cycle, a read command(00h or 50h) should be given before sequential page read cycle.
Table 4. Status Register Definition for 70h Command
I/O
Page Program
Pass/Fail
Not use
Block Erase
Pass/Fail
Not use
Read
Not use
Definition
Fail : "1"
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
Pass : "0"
Not use
Don’t -cared
Don’t -cared
Don’t -cared
Don’t -cared
Don’t -cared
Busy : "0"
Not use
Not use
Not use
Not Use
Not Use
Not Use
Not Use
Not Use
Not Use
Not Use
Not Use
Not Use
Ready/Busy
Write Protect
Ready/Busy
Write Protect
Ready/Busy
Write Protect
Ready : "1"
Protected : "0"
Not Protected : "1"
NOTE : 1. I/Os defined ’Not use’ are recommended to be masked out when Read Status is being executed.
.
Read ID
The device contains a product identification mode, initiated by writing 90h to the command register, followed by an address input of
00h. Five read cycles sequentially output the manufacturer code(ECh), and the device code and 3rd, 4th cycle ID respectively. The
command register remains in Read ID mode until further commands are issued to it. Figure 15 shows the operation sequence.
Figure 15. Read ID Operation
CLE
tCEA
CE
WE
tAR
ALE
RE
tWHR
tREA
Device
I/O0~7
90h
ECh
00h
5Ah
3Fh
Code
Maker code
Address. 1cycle
Device
Device Code
K9F1208R0C
36h
K9F1208B0C
K9F1208U0C
76h
76h
33
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
RESET
The device offers a reset feature, executed by writing FFh to the command register. When the device is in Busy state during random
read, program or erase mode, the reset operation will abort these operations. The contents of memory cells being altered are no
longer valid, as the data will be partially programmed or erased. The command register is cleared to wait for the next command, and
the Status Register is cleared to value C0h when WP is high. If the device is already in reset state a new reset command will be
accepted by the command register. The R/B pin changes to low for tRST after the Reset command is written. Refer to Figure 16
below.
Figure 16. RESET Operation
tRST
R/B
I/OX
FFh
Table 5. Device Status
After Power-up
After Reset
Operation mode
00h Command is latched
Waiting for next command
34
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
READY/BUSY
The device has a R/B output that provides a hardware method of indicating the completion of a page program, erase and random
read completion. The R/B pin is normally high but transitions to low after program or erase command is written to the command regis-
ter or random read is started after address loading. It returns to high when the internal controller has finished the operation. The pin is
an open-drain driver thereby allowing two or more R/B outputs to be Or-tied. Because pull-up resistor value is related to tr(R/B) and
current drain during busy(ibusy) , an appropriate value can be obtained with the following reference chart(Fig 17). Its value can be
determined by the following guidance.
Rp
ibusy
1.8V device - VOL : 0.1V, VOH : Vcc-0.1V
2.7V device - VOL : 0.4V, VOH : VccQ-0.4V
3.3V device - VOL : 0.4V, VOH : 2.4V
VCC
Ready Vcc
R/B
VOH
open drain output
VOL : 0.4V, VOH : 2.4V
CL
VOL
Busy
tf
tr
GND
Device
35
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
@ Vcc = 1.8V, Ta = 25°C , CL = 30pF
Ibusy
300n
3m
1.7
200n
100n
2m
1m
120
0.85
60
90
tr
30
0.57
1.7
0.43
1.7
1.7
2K
tf
1.7
4K
1K
3K
Rp(ohm)
@ Vcc = 2.7V, Ta = 25°C , CL = 30pF
300n
3m
2.3
Ibusy
200n
100n
1.1
2m
1m
120
90
tr
60
30
0.75
2.3
2.3
2.3
1K
0.55
tf
2.3
4K
2K
3K
Rp(ohm)
@ Vcc = 3.3V, Ta = 25°C , CL = 100pF
400
2.4
Ibusy
300n
3m
300
1.2
200n
100n
200
0.8
2m
1m
tr
100
3.6
0.6
3.6
3.6
2K
3.6
tf
4K
1K
3K
Rp(ohm)
Figure 17. Rp vs tr ,tf & Rp vs ibusy
Rp value guidance
VCC(Max.) - VOL(Max.)
IOL + ΣIL
1.85V
Rp(min, 1.8V part) =
=
3mA + ΣIL
VCC(Max.) - VOL(Max.)
2.5V
Rp(min, 2.7V part) =
Rp(min, 3.3V part) =
=
=
IOL + ΣIL
3mA + ΣIL
VCC(Max.) - VOL(Max.)
3.2V
IOL + ΣIL
8mA + ΣIL
where IL is the sum of the input currents of all devices tied to the R/B pin.
Rp(max) is determined by maximum permissible limit of tr
36
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
Data Protection & Power-up sequence
The device is designed to offer protection from any involuntary program/erase during power-transitions. An internal voltage detector
disables all functions whenever Vcc is below about 1.1V(1.8V device), 1.8V(2.7V device), 2V(3.3V device). WP pin provides hard-
ware protection and is recommended to be kept at VIL during power-up and power-down. A recovery time of minimum 100µs is
required before internal circuit gets ready for any command sequences as shown in Figure 18. The two step command sequence for
program/erase provides additional software protection.
Figure 18. AC Waveforms for Power Transition
1.8V device : ~ 1.5V
2.7V device : ~ 2.0V
3.3V device : ~ 2.5V
1.8V device : ~ 1.5V
2.7V device : ~ 2.0V
3.3V device : ~ 2.5V
VCC
High
WP
WE
100µs
37
K9F1208U0C
K9F1208R0C K9F1208B0C
FLASH MEMORY
WP AC Timing guide
Enabling WP during erase and program busy is prohibited. The erase and program operations are enabled and disabled as follows:
Figure A-1. Program Operation
1. Enable Mode
WE
I/O
80h
10h
WP
R/B
tww(min.100ns)
2. Disable Mode
WE
I/O
80h
10h
WP
R/B
tww(min.100ns)
Figure A-2. Erase Operation
1. Enable Mode
WE
I/O
60h
D0h
WP
R/B
tww(min.100ns)
2. Disable Mode
WE
I/O
60h
D0h
WP
R/B
tww(min.100ns)
38
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