Datasheet

©2011 Silicon Storage Technology, Inc. DS-25015A 04/11
58
64 Mbit (x16) Advanced Multi-Purpose Flash Plus
SST38VF6401 / SST38VF6402 / SST38VF6403 / SST38VF6404
Data Sheet
A
Microchip Technology Company
Figure 34:Password Operations (Program, Read, Submit)
Program
Load data: XXAAH
Address: 555H
Load data: XX55H
Address: 2AAH
Load data: XX60H
Address: 555H
Wait T
IDA
Read data:
Status Data
Address: PWA
X
Load data: XXA0H
Address: XXH
Load data: XX90H
Address: XXH
Load data: XX00H
Address: XXH
Load data: PWD
X
Address: PWA
X
Read
1309 F32.0
More to
Program or
Read
Ye s
No
Load data: XXAAH
Address: 555H
Load data: XX55H
Address: 2AAH
Load data: XX60H
Address: 555H
Load data: XX25H
Address: 00H
Load data: XX03H
Address: 00H
Load data: PWD0
Address: PWA0
Load data: XX29H
Address: 00H
Wait 2 µs
Wait T
IDA
Load data: PWD1
Address: PWA1
Load data: PWD2
Address: PWA2
Load data: PWD3
Address: PWA3
Load data: XX90H
Address: XXH
Load data: XX00H
Address: XXH
Exit Password
Command Mode
Submit PasswordProgram / Read Password
Note: The PWDX and PWAX data and address pairs can be submitted in any order.
PWD
X
= PWD
0
, PWD
1
, PWD
2
, PWD
3
PWA
X
=PWA
0
,PWA
1
,PWA
2
,PWA
3
X can be V
IL
or V
IH,
but no other value.