SST25PF020B(2012) View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

SST25PF020B
(Rev.:2012)

2 Mbit 2.3-3.6V SPI Serial Flash

Microchip Technology 

SST25PF020B

4.5.17 READ-ID (RDID)

The Read-ID instruction (RDID) identifies the devices

as SST25PF020B and manufacturer as Microchip. The

device information can be read from executing an 8-bit

command, 90H or ABH, followed by address bits [A23-

A0]. Following the Read-ID instruction, the manufac-

turer’s ID is located in address 00000H and the device

ID is located in address 00001H. Once the device is in

Read-ID mode, the manufacturer’s and device ID out-

put data toggles between address 00000H and 00001H

until terminated by a low to high transition on CE#.

Refer to Tables 4-6 and 4-7 for device identification

data.

CE#

SCK

MODE 3

MODE 0

0 123456 78

15 16

23 24 31 32 39 40 47 48 55 56 63

SI

90 or AB

00

00

ADD1

MSB

MSB

HIGH

HIGH IMPEDANCE

SO

BF Device ID BF Device ID IMPEDANCE

MSB

Note: The manufacturer's and device ID output stream is continuous until terminated by a low to high transition on CE#.

Device ID = 8CH for SST25PF020B

1. 00H will output the manfacturer's ID first and 01H will output device ID first before toggling between the two.

25135 RdID.0

FIGURE 4-21:

READ-ID SEQUENCE

TABLE 4-7: PRODUCT IDENTIFICATION

Manufacturer’s ID

Device ID

SST25PF020B

Address

00000H

00001H

Data

BFH

8CH

 2012 Microchip Technology Inc.

DS25135A-page 19

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