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M29W320DT Datasheet(PDF) 23 Page - STMicroelectronics

Part No. M29W320DT
Description  32 Mbit 4Mb x8 or 2Mb x16, Boot Block 3V Supply Flash Memory
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M29W320DT Datasheet(HTML) 23 Page - STMicroelectronics

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M29W320DT, M29W320DB
Command Interface
23/56
Table 5.
Commands, 8-bit mode, BYTE = VIL
(1)(2)
Command
Bus Write Operations
1st
2nd
3rd
4th
5th
6th
Addr
Data Addr
Data Addr
Data Addr
Data Addr
Data Addr
Data
Read/Reset(3)
1X
F0
3
AAA
AA
555
55
X
F0
Auto Select(4)
3
AAA
AA
555
55
AAA
90
Program(5)
4
AAA
AA
555
55
AAA
A0
PA
PD
Unlock Bypass(6)
3
AAA
AA
555
55
AAA
20
Unlock Bypass
Program(5)
2
X
A0
PA
PD
Unlock Bypass
Reset(7)
2X
90
X
00
Chip Erase(5)
6
AAA
AA
555
55
AAA
80
AAA
AA
555
55
AAA
10
Block Erase(5)
6+
AAA
AA
555
55
AAA
80
AAA
AA
555
55
BA
30
Erase Suspend(8)
1X
B0
Erase Resume(9)
1X
30
Read CFI Query(10)
1AA
98
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 a Program, Unlock Bypass Program, Chip Erase, Block Erase command 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. The CFI Query command is valid when device is ready to read array data or when device is in autoselected mode.


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