25VF080 データシートの表示（PDF） - Silicon Storage Technology

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25VF080

8 Mbit SPI Serial Flash

Silicon Storage Technology 

Advance Information

Read-ID

The Read-ID instruction identifies the devices as

SST25VF080 and manufacturer as SST. The device infor-

mation 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

8 Mbit SPI Serial Flash

SST25VF080

address 00000H and the device ID is located in address

00001H. Once the device is in Read-ID mode, the manu-

facturer’s and device ID output data toggles between

address 00000H and 00001H until terminated by a low to

high transition on CE#.

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 = 80H for SST25VF080

1. 00H will output the manfacturer's ID first and 01H will output device ID first before toggling between the two. 1250 F14.0

FIGURE 14: READ-ID SEQUENCE

©2003 Silicon Storage Technology, Inc.

16

S71250-00-000

10/03

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