SST39WF400B-70-4I-B3KE

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P32

©2011 Silicon Storage Technology, Inc. DS25034A 09/11

25

4 Mbit (x16) Multi-Purpose Flash

SST39WF400B

Data Sheet

A

Microchip Technology Company

Figure 19:Wait Options

1370 F17.0

Wait T

BP

,

T

SCE,

T

SE

or T

BE

Program/Erase

Initiated

Internal Timer

Toggle Bit

Ye s

Ye s

No

No

Program/Erase

Completed

Does DQ

6

match

Read same

word

Data# Polling

Program/Erase

Completed

Program/Erase

Completed

Read word

Is DQ

7

=

true data

Read DQ

7

Program/Erase

Initiated

Program/Erase

Initiated

©2011 Silicon Storage Technology, Inc. DS25034A 09/11

26

4 Mbit (x16) Multi-Purpose Flash

SST39WF400B

Data Sheet

A

Microchip Technology Company

Figure 20:Software ID/CFI Command Flowcharts

1370 F18.0

Load data: XXAAH

Address: 5555H

Software ID Entry

Command Sequence

Load data: XX55H

Address: 2AAAH

Load data: XX90H

Address: 5555H

Wait T

IDA

Read Software ID

Load data: XXAAH

Address: 5555H

CFI Query Entry

Command Sequence

Load data: XX55H

Address: 2AAAH

Load data: XX98H

Address: 5555H

Wait T

IDA

Read CFI data

Load data: XXAAH

Address: 5555H

Software ID Exit/CFI Exit

Command Sequence

Load data: XX55H

Address: 2AAAH

Load data: XXF0H

Address: 5555H

Load data: XXF0H

Address: XXH

Return to normal

operation

Wait T

IDA

Wait T

IDA

Return to normal

operation

Note: X can be V

IL

or V

IH

, but no other value.

©2011 Silicon Storage Technology, Inc. DS25034A 09/11

27

4 Mbit (x16) Multi-Purpose Flash

SST39WF400B

Data Sheet

A

Microchip Technology Company

Figure 21:Erase Command Sequence

1370 F19.0

Load data: XXAAH

Address: 5555H

Chip-Erase

Command Sequence

Load data: XX55H

Address: 2AAAH

Load data: XX80H

Address: 5555H

Load data: XX55H

Address: 2AAAH

Load data: XX10H

Address: 5555H

Load data: XXAAH

Address: 5555H

Wait T

SCE

Chip erased

to FFFFH

Load data: XXAAH

Address: 5555H

Sector-Erase

Command Sequence

Load data: XX55H

Address: 2AAAH

Load data: XX80H

Address: 5555H

Load data: XX55H

Address: 2AAAH

Load data: XX30H

Address: SA

X

Load data: XXAAH

Address: 5555H

Wait T

SE

Sector erased

to FFFFH

Load data: XXAAH

Address: 5555H

Block-Erase

Command Sequence

Load data: XX55H

Address: 2AAAH

Load data: XX80H

Address: 5555H

Load data: XX55H

Address: 2AAAH

Load data: XX50H

Address: BA

X

Load data: XXAAH

Address: 5555H

Wait T

BE

Block erased

to FFFFH

Note: X can be V

IL

or V

IH

, but no other value.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P32

SST39WF400B-70-4I-B3KE

Mfr. #:

Buy SST39WF400B-70-4I-B3KE

Manufacturer:

Microchip Technology

Description:

NOR Flash 4M (256Kx16) 70ns Industrial Temp

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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