M29W320DB70N1E_03 Ver la hoja de datos (PDF) - STMicroelectronics

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M29W320DB70N1E_03

32 Mbit (4Mb x8 or 2Mb x16, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

M29W320DT, M29W320DB

Table 5. Commands, 8-bit mode, BYTE = VIL

Bus Write Operations

Command

1st

2nd

3rd

4th

5th

6th

Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data

Read/Reset

1 X F0

3 AAA AA 555 55 X F0

Auto Select

3 AAA AA 555 55 AAA 90

Program

4 AAA AA 555 55 AAA A0 PA PD

Unlock Bypass

3 AAA AA 555 55 AAA 20

Unlock Bypass

Program

2 X A0 PA PD

Unlock Bypass Reset 2 X 90 X 00

Chip Erase

6 AAA AA 555 55 AAA 80 AAA AA 555 55 AAA 10

Block Erase

6+ AAA AA 555 55 AAA 80 AAA AA 555 55 BA 30

Erase Suspend

1 X B0

Erase Resume

1 X 30

Read CFI Query

1 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 VIL or DQ15 when BYTE is VIH.

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 additiona l

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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