SST25PF020B Ver la hoja de datos (PDF) - Microchip Technology

Número de pieza

componentes Descripción

Fabricante

SST25PF020B

2 Mbit 2.3-3.6V SPI Serial Flash

Microchip Technology 

SST25PF020B

4.5.16 JEDEC READ-ID

The JEDEC Read-ID instruction identifies the device as

SST25PF020B 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, 8CH, identifies the

device as SST25PF020B. The instruction sequence is

shown in Figure 4-20. The JEDEC Read ID instruction

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

time during data output.

CE#

SCK

MODE 3

MODE 0

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

SI

9F

HIGH IMPEDANCE

SO

BF

MSB

MSB

FIGURE 4-20:

JEDEC READ-ID SEQUENCE

TABLE 4-6: JEDEC READ-ID DATA

Manufacturer’s ID

Byte1

BFH

Memory Type

Byte 2

25H

25

8C

25135 JEDECID.1

Device ID

Memory Capacity

Byte 3

8CH

DS20005135B-page 18

 2013 Microchip Technology Inc.

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