Samsung K9F1608W0A-TIB0, K9F1608W0A-TCB0 Datasheet

0 (0)

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

 

 

 

Document Title

 

 

2M x 8 Bit NAND Flash Memory

 

 

Revision History

 

 

Revision No. History

Draft Date

Remark

0.0

Initial issue.

April 10th 1998

Preliminary

1.0

Data Sheet 1998.

July 14th 1998

Final

1.1

Data Sheet 1999.

April 10th 1999

Final

 

 

 

 

 

 

 

1) Added CE don’t care mode during the data-loading and reading

 

 

1.2

1) Revised real-time map-out algorithm(refer to technical notes)

July 23th 1999

Final

1.3

Changed device name

Sep.15th 1999

Final

 

- KM29W16000AT -> K9F1608W0A-TCB0

 

 

 

- KM29W16000AIT -> K9F1608W0A-TIB0

 

 

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.

1

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

2M x 8 Bit NAND Flash Memory

FEATURES

Voltage Supply : 2.7V ~ 5.5V

Organization

-Memory Cell Array : (2M + 64K)bit x 8bit

- Data Register

: (256 + 8)bit x8bit

Automatic Program and Erase

-Page Program : (256 + 8)Byte

- Block Erase : (4K + 128)Byte

-Status Register

264-Byte Page Read Operation

- Random Access

: 10μs(Max.)

-Serial Page Access : 80ns(Min.)

Fast Write Cycle Time

- Program time

: 250μs(typ.)

-Block Erase time : 2ms (typ.)

Command/Address/Data Multiplexed I/O port

Hardware Data Protection

-Program/Erase Lockout During Power Transitions

Reliable CMOS Floating-Gate Technology

-Endurance : 1M Program/Erase Cycles

-Data Retention : 10 years

Command Register Operation

44(40) - Lead TSOP Type II (400mil / 0.8 mm pitch)

-Forward Type

GENERAL DESCRIPTION

The K9F1608W0A is a 2M(2,097,152)x8bit NAND Flash Memory with a spare 64K(65,536)x8bit. Its NAND cell provides the most cost-effective solution for the solid state mass storage market. A program operation programs the 264-byte page in typically 250μs and an erase operation can be performed in typically 2ms on a 4K-byte block.

Data in the page can be read out at 80ns cycle time per byte. The I/O pins serve as the ports for address and data input/output as well as command inputs. The on-chip write controller automates all program and erase system functions, including pulse repetition, where required, and internal verify and margining of data. Even the write-intensive systems can take advantage of the K9F1608W0A extended reliability of 1,000,000 program/erase cycles by providing either ECC(Error Correction Code) or real time mapping-out algorithm. These algorithms have been implemented in many mass storage applications and also the spare 8bytes of a page combined with the other 256 bytes can be utilized by system-level ECC.

The K9F1608W0A is an optimum solution for large nonvolatile storage application such as solid state storage, digital voice recorder, digital still camera and other portable applications requiring nonvolatility.

PIN CONFIGURATION

PIN DESCRIPTION

VSS

 

1

44

 

VCC

 

 

 

 

CLE

 

2

43

 

CE

 

 

 

 

ALE

 

3

42

 

RE

 

 

 

 

WE

 

4

41

 

R/B

 

 

 

 

WP

 

5

40

 

GND

 

 

 

 

N.C

 

6

39

 

N.C

 

 

 

 

N.C

 

7

38

 

N.C

 

 

 

 

N.C

 

8

37

 

N.C

 

 

 

 

N.C

 

9

36

 

N.C

 

 

 

 

N.C

 

10

35

 

N.C

 

 

 

 

 

 

11

34

 

 

 

 

12

33

 

 

N.C

 

13

32

 

N.C

 

 

 

 

N.C

 

14

31

 

N.C

 

 

 

 

N.C

 

15

30

 

N.C

 

 

 

 

N.C

 

16

29

 

N.C

 

 

 

 

N.C

 

17

28

 

N.C

 

 

 

 

I/O0

 

18

27

 

I/O7

 

 

 

 

I/O1

 

19

26

 

I/O6

 

 

 

 

I/O2

 

20

25

 

I/O5

 

 

 

 

I/O3

 

21

24

 

I/O4

 

 

 

 

VSS

 

22

23

 

VCCQ

 

 

 

 

 

 

 

 

 

 

44(40) TSOP (II) STANDARD TYPE

Pin Name

Pin Function

I/O0 ~ I/O7

Data Inputs/Outputs

 

 

CLE

Command Latch Enable

 

 

ALE

Address Latch Enable

 

 

 

 

 

 

 

 

 

 

 

 

 

CE

Chip Enable

 

 

 

 

 

 

 

RE

Read Enable

 

 

 

 

 

 

 

WE

Write Enable

 

 

 

 

 

 

 

WP

Write Protect

 

 

GND

Ground Input

 

 

 

 

 

 

 

R/B

Ready/Busy output

VCC

Power(2.7V~5.5V)

VCCQ

Output Butter Power(2.7V~5.5V)

 

VSS

Ground

 

 

N.C

No Connection

NOTE : Connect all VCC,VccQ and VSS pins of each device to power supply outputs.

Do not leave VCC or VSS disconnected.

2

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

Figure 1. FUNCTIONAL BLOCK DIAGRAM

A8 - A20

X-Buffers

 

Latches

16M + 512K Bit

 

 

& Decoders

NAND Flash

 

Y-Buffers

ARRAY

A0 - A7

 

Latches

(256 + 8)Byte x 8192

 

 

& Decoders

 

 

 

 

Page Register & S/A

Command

 

Y-Gating

 

I/O Buffers & Latches

 

Command

 

 

 

Register

VccQ

 

 

 

 

Vss

CE

Control Logic

 

RE

& High Voltage

I/0 0

WE

Generator

Global Buffers

 

 

I/0 7

 

CLE ALE WP

 

Figure 2. ARRAY ORGANIZATION

16M : 8K Row

(=512 Block)

1 Block(=16 Row)

(4K + 128)Byte

1 Page = 264 Byte

1 Block = 264 B x 16 Pages = (4K + 128) Bytes

1 Device = 264B x 16Pages x 512 Blocks = 16.5 Mbits

 

8 bit

256B Column

8B Column

Page Register

I/O 0 ~ I/O 7

 

256Byte

8Byte

 

 

I/O 0

I/O 1

I/O 2

I/O 3

I/O 4

I/O 5

I/O 6

I/O 7

 

 

 

 

 

 

 

 

 

 

 

 

1st Cycle

 

A0

A1

A2

A3

A4

A5

A6

A7

Column Address

2nd Cycle

 

A8

A9

A10

A11

A12

A13

A14

A15

Row Address

 

(Page Address)

 

 

 

 

 

 

 

 

 

 

3rd Cycle

 

A16

A17

A18

A19

A20

*X

*X

*X

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE : A12

to A20 : Block Address

 

 

 

* : X can be VIL or VIH.

 

3

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

PRODUCT INTRODUCTION

The K9F1608W0A is a 16.5Mbit(17,301,504 bit) memory organized as 8192 rows by 264 columns. Spare eight columns are located from column address of 256 to 263. A 264-byte 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 16 pages formed by one NAND structures, totaling 2,112 NAND structures of 16 cells. The array organization is shown in Figure 2. The program and read operations are executed on a page basis, while the erase operation is executed on block basis. The memory array consists of 512 separately or grouped erasable 4K-byte blocks. It indicates that the bit by bit erase operation is prohibited on the K9F1608W0A.

The K9F1608W0A has addresses multiplexed into 8 I/Os. 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. All commands require one bus cycle except for Block Erase command which requires two cycles : a cycle for erase-setup and another for erase-execution after block address loading. The 2M byte physical space requires 21 addresses, thereby requiring three cycles for byte-level addressing : column address, low row address and high row address, in that order. Page Read and Page Program need the same three address cycles following the required command input. In Block Erase operation, however, only the two row address cycles are used.

Device operations are selected by writing specific commands into the command register. Table 1 defines the specific commands of the K9F1608W0A.

Table 1. COMMAND SETS

Function

1st. Cycle

2nd. Cycle

Acceptable Command during Busy

 

 

 

 

Sequential Data Input

80h

-

 

 

 

 

 

Read 1

00h

-

 

 

 

 

 

Read 2

50h

-

 

 

 

 

 

Read ID

90h

-

 

 

 

 

 

Reset

FFh

-

O

 

 

 

 

Page Program

10h

-

 

 

 

 

 

Block Erase

60h

D0h

 

 

 

 

 

Read Status

70h

-

O

 

 

 

 

4

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

PIN DESCRIPTION

Command Latch Enable(CLE)

The CLE input controls the path activation 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 path activation for address and input data to the internal address/data register. Addresses are latched on the rising edge of WE with ALE high, and input data is latched when ALE is low.

Chip Enable(CE)

The CE input is the device selection control. When CE goes high during a read operation the device is returned to standby mode. However, when the device is in the busy state during program or erase, CE high is ignored, and does not return the device to standby mode.

Write Enable(WE)

The WE input controls writes to the I/O port. Commands, address and data are latched on the rising edge of the WE pulse.

Read Enable(RE)

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.

I/O Port : I/O 0 ~ I/O 7

The I/O pins are used to input command, address and data, and to outputs data during read operations. The I/O pins float to high-z when the chip is deselected or the outputs are disabled.

Write Protect (WP)

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(R/B)

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 return 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 outputs are disabled.

Power Line(VCC & VCCQ)

The VCCQ is the power supply for I/O interface logic. It is electrically isolated from main power line(VCC=2.7~5.5V) for supporting 5V tolerant I/O with 5V power supply at VCCQ.

5

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Rating

Unit

 

 

 

 

Voltage on any pin relative to VSS

VIN

-0.6 to +7.0

V

 

 

 

 

 

Temperature Under Bias

K9F1608W0A-TCB0

TBIAS

-10 to +125

°C

 

 

K9F1608W0A-TIB0

-40 to +125

 

 

 

 

 

 

 

 

Storage Temperature

TSTG

-65 to +150

°C

 

 

 

 

Short Circuit Output Current

IOS

5

mA

 

 

 

 

 

NOTE :

1.Minimum DC voltage is -0.3V on input/output pins. During transitions, this level may undershoot to -2.0V for periods <30ns. Maximum DC voltage on input/output pins is VCCQ+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, K9F1608W0A-TCB0:TA=0 to 70°C, K9F1608W0A-TIB0:TA=-40 to 85°C)

Parameter

Symbol

Min

Typ.

Max

Unit

 

 

 

 

 

 

Supply Voltage

VCC

2.7

-

5.5

V

 

 

 

 

 

 

Supply Voltage

VCCQ1)

2.7

-

5.5

V

Supply Voltage

VSS

0

0

0

V

 

 

 

 

 

 

NOTE : 1. Vcc and VccQ pins are separater each other.

DC AND OPERATING CHARACTERISTICS(Recommended operating conditions otherwise noted.)

Parameter

Symbol

 

Test Conditions

 

Vcc=2.7V ~ 3.6V

Vcc=3.6V ~ 5.5V

Unit

 

 

 

 

 

 

 

 

 

 

Min

Typ

Max

Min

Typ

Max

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sequential Read

ICC1

tcycle=80ns, CE=VIL,

-

10

20

-

15

30

 

 

IOUT=0mA

 

Operating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Program

ICC2

-

 

 

 

-

10

20

-

15

30

mA

Current

 

 

 

 

Erase

ICC3

-

 

 

 

-

10

20

-

25

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stand-by Current(TTL)

ISB1

CE=VIH, WP=0V/VCC

-

-

1

-

-

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stand-by Current(CMOS)

ISB2

CE=VCC-0.2, WP=0V/VCC

-

5

50

-

5

50

 

 

 

 

 

 

 

 

 

 

 

Input Leakage Current

ILI

VIN=0 to 5.5V

-

-

±10

-

-

±10

μA

 

 

 

 

 

 

 

 

 

 

Output Leakage Current

ILO

VOUT=0 to 5.5V

-

-

±10

-

-

±10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input High Voltage

VIH

I/O Pins

2.0

-

VCCQ+0.3

3.0

-

VCCQ+0.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Except I/O Pins

2.0

-

VCC+0.3

3.0

-

VCC+0.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input Low Voltage, All inputs

VIL

-

 

 

 

-0.3

-

0.6

-0.3

-

0.8

V

 

 

 

 

 

 

 

 

 

 

Output High Voltage Level

VOH

IOH=-400μA

2.4

-

-

2.4

-

-

 

 

 

 

 

 

 

 

 

 

 

Output Low Voltage Level

VOL

IOL=2.1mA

-

-

0.4

-

-

0.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output Low Current(R/B)

IOL(R/B)

VOL=0.4V

8

10

-

8

10

-

mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

Samsung K9F1608W0A-TIB0, K9F1608W0A-TCB0 Datasheet

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

VALID BLOCK

Parameter

Symbol

Min

Typ.

Max

Unit

 

 

 

 

 

 

Valid Block Number

NVB

502

508

512

Blocks

 

 

 

 

 

 

NOTE :

1.The K9F1608W0A may include invalid blocks. Invalid blocks are defined as blocks that contain one or more bad bits. Do not try to access these invalid blocks for program and erase. During its lifetime of 10 years and/or 1million program/erase cycles,the minimum number of valid blocks are guaranteed though its initial number could be reduced. (Refer to the attached technical notes)

2.The 1st block, which is placed on 00h block address, is guaranteed to be a valid block

AC TEST CONDITION

(K9F1608W0A-TCB0:TA=0 to 70°C, K9F1608W0A-TIB0:TA=-40 to 85°C, VCC=2.7V ~ 5.5V unless otherwise noted)

Parameter

 

 

Value

 

 

 

 

 

Vcc=2.7V ~ 3.6V

 

Vcc=3.6V ~ 5.5V

 

 

 

 

 

 

 

Input Pulse Levels

0.4V to 2.4V

 

0.4V to 3.4V

 

 

 

 

 

Input Rise and Fall Times

 

5ns

 

 

 

Input and Output Timing Levels

 

0.8V and 2.0V

 

 

 

 

 

Output Load

 

1 TTL GATE and

 

1 TTL GATE and CL = 100pF

 

 

 

 

CL=50pF(3.0V+/-10%),100pF(3.0V~3.6V)

 

 

 

 

 

 

 

 

CAPACITANCE(TA=25°C, Vcc=5.0V f=1.0MHz)

Item

Symbol

Test Condition

Min

Max

Unit

 

 

 

 

 

 

Input/Output Capacitance

CI/O

VIL=0V

-

10

pF

 

 

 

 

 

 

Input Capacitance

CIN

VIN=0V

-

10

pF

 

 

 

 

 

 

NOTE : Capacitance is periodically sampled and not 100% tested.

MODE SELECTION

CLE

ALE

CE

WE

RE

WP

Mode

H

L

L

 

H

X

Command Input

L

H

L

 

H

X

Read Mode

 

Address Input(3clock)

H

L

L

 

H

H

Command Input

L

H

L

 

H

H

Write Mode

 

Address Input(3clock)

L

L

L

 

H

H

Data Input

L

L

L

H

 

X

Sequential Read & Data Output

L

L

L

H

H

X

During Read(Busy)

X

X

X

X

X

H

During Program(Busy)

X

X

X

X

X

H

During Erase(Busy)

X

X(1)

X

X

X

L

Write Protect

X

X

H

X

X

0V/VCC(2)

Stand-by

NOTE : 1. X can be VIL or VIH

2. WP should be biased to CMOS high or CMOS low for standby.

Program/Erase Characteristics

 

Parameter

Symbol

Min

Typ

Max

Unit

 

 

 

 

 

 

 

 

 

 

Program Time

tPROG

-

0.25

1.5

ms

 

 

 

 

 

 

 

 

 

 

Number of Partial Program Cycles in the Same Page

Nop

-

-

10

cycles

 

 

 

 

 

 

 

 

 

 

Block Erase Time

tBERS

-

2

10

ms

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

K9F1608W0A-TCB0, K9F1608W0A-TIB0

FLASH MEMORY

 

 

AC Timing Characteristics for Command / Address / Data Input

 

 

 

Parameter

Symbol

Min

Max

Unit

 

 

 

 

 

 

 

CLE Set-up Time

tCLS

20

-

ns

 

 

 

 

 

 

 

CLE Hold Time

tCLH

40

-

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CE Setup Time

tCS

20

-

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CE Hold Time

tCH

40

-

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WE Pulse Width

tWP

40

-

ns

 

 

 

 

 

 

 

ALE Setup Time

tALS

20

-

ns

 

 

 

 

 

 

 

ALE Hold Time

tALH

40

-

ns

 

 

 

 

 

 

 

Data Setup Time

tDS

30

-

ns

 

 

 

 

 

 

 

Data Hold Time

tDH

20

-

ns

 

 

 

 

 

 

 

Write Cycle Time

tWC

80

-

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WE High Hold Time

tWH

20

-

ns

 

 

 

 

 

 

 

 

AC Characteristics for Operation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

Symbol

Min

Max

Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data Transfer from Cell to Register

 

 

 

tR

-

10

 

 

μs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALE to RE Delay

 

 

 

tAR

150

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALE to RE Delay(read ID)

 

 

 

tAR1

200

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CE to RE Delay( ID read)

 

 

 

tCR

200

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ready to RE Low

 

 

 

tRR

20

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WE High to Busy

 

 

 

tWB

-

200

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read Cycle Time

 

 

 

tRC

80

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RE Access Time

 

 

 

tREA

-

45

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RE High to Output Hi-Z

 

 

 

tRHZ

5

20

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CE High to Output Hi-Z

 

 

 

tCHZ

-

30

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RE High Hold Time

 

 

 

tREH

20

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output Hi-Z to RE Low

 

 

 

tIR

0

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Last RE High to Busy(at sequential read)

 

 

 

tRB

-

200

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tCRY

-

 

 

 

ns

 

CE High to Ready(in case of interception by CE at read)(1)

 

 

 

100+tr(R/B)(2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tCEH

250

-

 

 

ns

 

CE High Hold Time(at the last serial read)(3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RE Low to Status Output

 

 

tRSTO

-

45

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CE Low to Status Output

 

 

tCSTO

-

55

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RE High to WE Low

 

 

tRHW

0

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WE High to RE Low

 

 

tWHR

50

-

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

Device Resetting Time(Read/Program/Erase)

 

 

 

tRST

-

5/10/500

μs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE : 1. If CE goes high within 30ns after the rising edge of the last RE, R/B will not return to VOL.

2.The time to Ready depends on the value of the pull-up resistor tied R/B pin.

3.To break the sequential read cycle, CE must be held high for longer time than tCEH.

8

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