NX25F640C 查看數據表（PDF） - NexFlash -> Winbond Electronics

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NX25F640C

64M-BIT SERIAL FLASH MEMORY WITH 4-PIN SPI INTERFACE

NexFlash -> Winbond Electronics 

NX25F640C

Table 3: Command Set for the NX25F640C Serial Flash Memory (3)

Command Name

Byte 1 Byte 2-3

Byte 4-5 or n-bytes

Sector and SRAM Read Commands

Transfer Sector to SRAM-0 (2)

Transfer Sector to SRAM-1 (2)

Read SRAM-0 (1)

Read SRAM-1 (1)

5CH

SA15:0

0000H 0000H ST15:0 (4)

5DH

SA15:0

0000H 0000H ST15:0 (4)

71H

BA15:0

00H

Read Data

73H

BA15:0

00H

Read Data

Sector and SRAM Write Commands

Write Enable (1)

Write Disable (1)

Write Sector using SRAM-0 (2)

Write Sector using SRAM-1 (2)

Write to SRAM-0 (1)

Write to SRAM-1 (1)

06H

04H

F6H

SA15:0

BA15:0 Write Data+00H

98H

SA15:0

BA15:0 Write Data+00H

72H

BA15:0

Write Data+00H

74H

BA15:0

Write Data+00H

Transfer and Refresh Commands

Transfer SRAM-0 to Sector (2)

Transfer SRAM-1 to Sector (2)

Transfer SRAM-0 to SRAM-1 (2)

Transfer SRAM-1 to SRAM-0 (2)

Refresh Sector using SRAM-0 (2)

Refresh Sector using SRAM-1 (2)

F6H

SA15:0

0000H

98H

SA15:0

0000H

92H

0000H

0000H 0000H

55H

0000H

0000H 0000H

58H

SA15:0

0000H 0000H

59H

SA15:0

0000H 0000H

Configuration and Status Commands

Read Device Information Sector (2)

Read Configuration Register (1)

Write Configuration Register (1)

Read Status Register (1)

Clear Power Down Bit (1)

Set Power Down Bit (1)

15H

0000H

BA15:0 0000H Ready/Busy Read Data

8CH

CF15:0

8AH

CF15:0

0000H

84H

ST15:0

09H

03H

Notes:

1. Command may be used when device is busy

2. Command may not be used when device is busy

3. Additional commands such as Auto Increment and other commands offering compatibility with earlier generation NexFlash

devices are available. Contact NexFlash for further information.

4. ST15:0 status repeats every 16 Clocks

NexFlash Technologies, Inc.

13

PRELIMINARY NXSF022F-0502

05/20/02 ©

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