Datasheet

©2011 Silicon Storage Technology, Inc. DS25008A 08/11
13
64 Mbit Multi-Purpose Flash Plus
SST39VF6401B / SST39VF6402B
Not Recommended for New Designs
A
Microchip Technology Company
Operations
Table 5: Operation Modes Selection
Mode CE# OE# WE# DQ Address
Read V
IL
V
IL
V
IH
D
OUT
A
IN
Program V
IL
V
IH
V
IL
D
IN
A
IN
Erase V
IL
V
IH
V
IL
X
1
1. X can be V
IL
or V
IH
, but no other value.
Sector or block address,
XXH for Chip-Erase
Standby V
IH
X X High Z X
Write Inhibit X V
IL
X High Z/ D
OUT
X
XXV
IH
High Z/ D
OUT
X
Product Identification
Software Mode V
IL
V
IL
V
IH
See Table 6
T5.0 25008
Table 6: Software Command Sequence
Command
Sequence
1st Bus
Write Cycle
2nd Bus
Write Cycle
3rd Bus
Write Cycle
4th Bus
Write Cycle
5th Bus
Write Cycle
6th Bus
Write Cycle
Addr
1
1. Address format A
10
-A
0
(Hex).
Addresses A
11
-A
21
can be V
IL
or V
IH,
but no other value, for Command sequence for SST39VF640xB.
Data
2
2. DQ
15
-DQ
8
can be V
IL
or V
IH
, but no other value, for Command sequence
Addr
1
Data
2
Addr
1
Data
2
Addr
1
Data
2
Addr
1
Data
2
Addr
1
Data
2
Word-Program
555H AAH 2AAH 55H 555H A0H WA
3
3. WA = Program Word address
Data
Sector-Erase
555H AAH 2AAH 55H 555H 80H 555H AAH 2AAH 55H SA
X
4
4. SA
X
for Sector-Erase; uses A
MS
-A
11
address lines
BA
X
, for Block-Erase; uses A
MS
-A
15
address lines
A
MS
= Most significant address
A
MS
=A
21
for SST39VF640xB
50H
Block-Erase
555H AAH 2AAH 55H 555H 80H 555H AAH 2AAH 55H BA
X
4
30H
Chip-Erase
555H AAH 2AAH 55H 555H 80H 555H AAH 2AAH 55H 555H 10H
Erase-Suspend
XXXXH
B0H
Erase-Resume
XXXXH
30H
Query Sec ID
5
5. With A
MS
-A
4
= 0; Sec ID is read with A
3
-A
0
,
SST ID is read with A
3
= 0 (Address range = 000000H to 000007H),
User ID is read with A
3
= 1 (Address range = 000010H to 000017H).
Lock Status is read with A
7
-A
0
= 0000FFH. Unlocked: DQ
3
= 1 / Locked: DQ
3
=0.
555H AAH 2AAH 55H 555H 88H
User Security ID
Word-Program
555H AAH 2AAH 55H 555H A5H WA
6
6. Valid Word-Addresses for Sec ID are from 000000H-000007H and 000010H-000017H.
Data
User Security ID
Program Lock-Out
555H AAH 2AAH 55H 555H 85H XXH
6
0000H
Software ID Entry
7,8
555H AAH 2AAH 55H 555H 90H
CFI Query Entry
555H AAH 2AAH 55H 555H 98H
Software ID Exit
9,10
/CFI Exit/Sec ID Exit
555H AAH 2AAH 55H 555H F0H
Software ID Exit
9,10
/CFI Exit/Sec ID Exit
XXH F0H
T6.0 25008