SST25VF020B-80-4I-SA 查看數據表（PDF） - Microchip Technology

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SST25VF020B-80-4I-SA

2 Mbit SPI Serial Flash

Microchip Technology 

A Microchip Technology Company

2 Mbit SPI Serial Flash

SST25VF020B

Data Sheet

Read-ID (RDID)

The Read-ID instruction (RDID) identifies the devices as SST25VF020B and manufacturer as SST. 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 manufacturer’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 manufac-

turer’s and device ID output data toggles between address 00000H and 00001H until terminated by a

low to high transition on CE#.

Refer to Tables 7 and 8 for device identification data.

CE#

MODE 3 0 1 2 3 4 5 6 7 8

15 16

23 24 31 32 39 40 47 48 55 56

63

SCK MODE 0

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 SST25VF020B

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

1417 RdID.0

Figure 23:Read-ID Sequence

Table 8: Product Identification

Manufacturer’s ID

Device ID

SST25VF020B

Address

00000H

00001H

Data

BFH

8CH

T8.0 1417

©2011 Silicon Storage Technology, Inc.

24

S71417-03-000

02/11

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