Command Interface
M29FxxxFT, M29FxxxFB
Table 4.
Commands, 16-bit mode, BYTE = V
IH
Bus Write Operations
3rd 4th
Addr Addr Addr Addr Addr Addr Addr Addr Addr Addr Addr Addr
Command
1st
2nd
5th
6th
1
3
3
4
3
X
F0
Read/Reset
555
555
555
555
AA
AA
AA
AA
2AA 55
2AA 55
2AA 55
2AA 55
X
F0
90
A0
20
Auto Select
Program
555
555
555
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
98
X
00
555
2AA 55
2AA 55
555
555
80
80
555
555
AA
AA
2AA 55
2AA 55
555
BA
10
30
Block Erase
6+ 555
Erase Suspend
Erase Resume
Read CFI Query
1
1
1
X
X
55
X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block. All values in the table are in hexadecimal.
Command Interface: only uses A–1, A0-A10 and DQ0-DQ7 to verify the commands; A11-A19, DQ8-DQ14 and DQ15 are Don’t
Care. DQ15A–1 is A–1 when BYTE is VIL or DQ15 when BYTE is VIH
.
Read/Reset: After a Read/Reset command, read the memory as normal until another command is issued.
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 commands on non-erasing blocks as normal.
Erase Resume: 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.
CFI Query: Command is valid when device is ready to read array data or when device is in Auto Select mode.
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NUMONYX [ NUMONYX B.V ]
