Command Interface
M29W320DT, M29W320DB
(1)(2)
Table 4.
Commands, 16-bit mode, BYTE = V
IH
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(3)
555
555
555
555
2AA
2AA
2AA
2AA
55
55
55
55
X
F0
90
A0
20
Auto Select(4)
Program(5)
555
555
555
PA
PD
Unlock Bypass(6)
Unlock Bypass
Program(5)
2
X
A0
90
PA
X
PD
00
Unlock Bypass
Reset(7)
2
6
X
Chip Erase(5)
555
AA
AA
B0
30
98
2AA
2AA
55
55
555
555
80
80
555
555
AA
AA
2AA
2AA
55
55
555
BA
10
30
Block Erase(5)
6+ 555
Erase Suspend(8)
Erase Resume(9)
Read CFI Query(10)
1
1
1
X
X
55
1. X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block. All values in the table are in
hexadecimal.
2. 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 VIL or DQ15 when BYTE is VIH
.
3. After a Read/Reset command, read the memory as normal until another command is issued. Read/Reset command is
ignored during algorithm execution.
4. After an Auto Select command, read Manufacturer ID, Device ID or Block Protection Status.
5. After Program, Unlock Bypass Program, Chip Erase, Block Erase 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.
6. After the Unlock Bypass command issue Unlock Bypass Program or Unlock Bypass Reset commands.
7. After the Unlock Bypass Reset command read the memory as normal until another command is issued.
8. After the Erase Suspend command read non-erasing memory blocks as normal, issue Auto Select and Program
commands on non-erasing blocks as normal.
9. After the Erase Resume command the suspended Erase operation resumes, read the Status Register until the
Program/Erase Controller completes and the memory returns to Read Mode.
10. CFI Query command is valid when device is ready to read array data or when device is in autoselected mode.
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NUMONYX [ NUMONYX B.V ]
