SST39VF1681_11 Datasheet, PDF (10/34 Pages) Silicon Storage Technology, Inc – 16 Mbit (x8) Multi-Purpose Flash Plus Active Current: 9 mA (typical)

A Microchip Technology Company
16 Mbit Multi-Purpose Flash Plus
SST39VF1681 / SST39VF1682
Operations
Data Sheet
Table 5: Operation Modes Selection
Mode
Read
Program
Erase
CE#
V_IL
V_IL
V_IL
OE#
V_IL
V_IH
V_IH
WE#
V_IH
V_IL
V_IL
DQ
D_OUT
D_IN
X¹
Standby
Write Inhibit
Product Identification
Software Mode
V_IH
X
X
V_IL
X
X
V_IL
V_IL
1. X can be V_IL or V_IH, but no other value.
X High Z
X High Z/ D_OUT
V_IH High Z/ D_OUT
V_IH
Address
A_IN
A_IN
Sector or block address,
XXH for Chip-Erase
X
X
X
See Table 6
T5.0 25040
Table 6: Software Command Sequence
Command
Sequence
1st Bus
2nd Bus
3rd Bus
4th Bus
5th Bus
6th Bus
Write Cycle Write Cycle Write Cycle Write Cycle Write Cycle Write Cycle
Addr¹ Data Addr¹ Data Addr¹ Data Addr¹ Data Addr¹ Data Addr¹ Data
Byte-Program
AAAH AAH 555H 55H AAAH A0H BA² Data
Sector-Erase
Block-Erase
Chip-Erase
AAAH
AAAH
AAAH
AAH
AAH
AAH
555H
555H
555H
55H AAAH 80H AAAH AAH
55H AAAH 80H AAAH AAH
55H AAAH 80H AAAH AAH
555H
555H
555H
55H SA_X3 50H
55H BA_X3 30H
55H AAAH 10H
Erase-Suspend XXXXH B0H
Erase-Resume XXXXH 30H
Query Sec ID⁴
AAAH AAH 555H 55H AAAH 88H
User Security ID AAAH
Byte-Program
User Security ID AAAH
Program Lock-Out
AAH
AAH
555H
555H
55H AAAH A5H BA⁵
55H AAAH 85H XXH⁵
Data
00H
Software ID
Entry^6,7
AAAH AAH 555H 55H AAAH 90H
CFI Query Entry AAAH AAH 555H 55H AAAH 98H
Software ID Exit^8,9
/CFI Exit/Sec ID
Exit
Software ID Exit^8,9
/CFI Exit/Sec ID
Exit
AAAH
XXH
AAH
F0H
555H
55H AAAH F0H
1. Address format A₁₁-A₀ (Hex).
Addresses A₂₀-A₁₂ can be V_IL or V_IH, but no other value, for Command sequence for SST39VF1681/1682.
2. BA = Program Byte Address
3. SA_X for Sector-Erase; uses A_MS-A₁₂ address lines
BA_X, for Block-Erase; uses A_MS-A₁₆ address lines
A_MS = Most significant address
A_MS = A₂₀ for SST39VF1681/1682
T6.1 25040
©2011 Silicon Storage Technology, Inc.
10
DS25040A
05/11