SST25PF080B データシートの表示（PDF） - Microchip Technology

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SST25PF080B

8 Mbit 2.3-3.6V SPI Serial Flash

Microchip Technology 

SST25PF080B

4.8.6 JEDEC READ-ID

The JEDEC Read-ID instruction identifies the device as

SST25PF080B and the manufacturer as Microchip.

The device information can be read from executing the

8-bit command, 9FH. Following the JEDEC Read-ID

instruction, the 8-bit manufacturer’s ID, BFH, is output

from the device. After that, a 16-bit device ID is shifted

out on the SO pin. Byte 1, BFH, identifies the manufac-

turer as Microchip. Byte 2, 25H, identifies the memory

type as SPI Serial Flash. Byte 3, 8EH, identifies the

device as SST25PF080B. The instruction sequence is

shown in Figure 4-18. The JEDEC Read ID instruction

is terminated by a low to high transition on CE# at any

time during data output.

CE#

MODE 3 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

SCK MODE 0

SI

9F

SO HIGH IMPEDANCE

BF

MSB

MSB

FIGURE 4-18:

JEDEC READ-ID SEQUENCE

TABLE 4-6: JEDEC READ-ID DATA

Manufacturer’s ID

Byte1

BFH

Memory Type

Byte 2

25H

25

8E

25137 JEDECID.1

Device ID

Memory Capacity

Byte 3

8EH

 2012 Microchip Technology Inc.

DS25134A-page 17

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