M29W320DT, M29W320DB
Table 4. Commands, 8-bit mode, BYTE = V
IL
Bus Write Operations
3rd 4th
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
Command
1st
2nd
5th
6th
1
3
3
4
3
X
F0
AA
AA
AA
AA
Read/Reset
AAA
AAA
AAA
AAA
555
555
555
555
55
55
55
55
X
F0
90
A0
20
Auto Select
Program
AAA
AAA
AAA
PA
PD
Unlock Bypass
Unlock Bypass
Program
2
X
A0
PA
PD
Unlock Bypass Reset
Chip Erase
2
6
X
90
AA
AA
B0
30
X
00
55
55
AAA
555
555
AAA
AAA
80
80
AAA
AAA
AA
AA
555
555
55
55
AAA
BA
10
30
Block Erase
6+ AAA
Erase Suspend
Erase Resume
Read CFI Query
1
1
1
X
X
AA
98
Note: X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block. All values in the table are in hexadecimal.
The Command Interface only uses A–1, A0-A10 and DQ0-DQ7 to verify the commands; A11-A20, DQ8-DQ14 and DQ15 are Don’t
Care. DQ15A–1 is A–1 when BYTE is V or DQ15 when BYTE is V
.
IH
IL
Read/Reset. After a Read/Reset command, read the memory as normal until another command is issued. Read/Reset command is
ignored during algorithm execution.
Auto Select. After an Auto Select command, read Manufacturer ID, Device ID or Block Protection Status.
Program, Unlock Bypass Program, Chip Erase, Block Erase. After these commands read the Status Register until the Program/
Erase Controller completes and the memory returns to Read Mode. Add additional Blocks during Block Erase Command with additional
Bus Write Operations until Timeout Bit is set.
Unlock Bypass. After the Unlock Bypass command issue Unlock Bypass Program or Unlock Bypass Reset commands.
Unlock Bypass Reset. After the Unlock Bypass Reset command read the memory as normal until another command is issued.
Erase Suspend. After the Erase Suspend command read non-erasing memory blocks as normal, issue Auto Select and Program com-
mands on non-erasing blocks as normal.
Erase Resume. After the Erase Resume command the suspended Erase operation resumes, read the Status Register until the Pro-
gram/Erase Controller completes and the memory returns to Read Mode.
CFI Query. Command is valid when device is ready to read array data or when device is in autoselected mode.
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STMICROELECTRONICS [ ST ]
