©2012 Silicon Storage Technology, Inc.

DS25024C

10/12

23

8 Mbit 1.8V SPI Serial Flash

SST25WF080

Not Recommended for New Designs

Read-ID

The Read-ID instruction identifies the manufacturer as SST and the device as SST25WF080. Use the

Read-ID instruction to identify SST device when using multiple manufacturers in the same socket. See

Table 7.

The device information is read by executing an 8-bit command, 90H or ABH, followed by address bits

the device ID is located in address 000001H. Once the device is in Read-ID mode, the manufacturer’s

and device ID output data toggles between address 000000H and 000001H until terminated by a low

to high transition on CE#.

Figure 23:Read-ID Sequence

Table 7: Product Identification

Address

Data

Manufacturer’s ID

000000H

BFH

Device ID

SST25WF080

000001H

05H

T7.25024

1203 F22.0

CE#

SO

SI

SCK

00

01 2 3 4 5 6 7 8

00

ADD

90 or AB

HIGH IMPEDANCE

15 16

23 24

31 32

39 40

47 48

55 56

63

BF

Device ID

BF

Device ID

Note: 1. The manufacturer's and device ID output stream is continuous until terminated by a low to high transition on CE#.

2. 00H will output the manfacturer's ID first and 01H will output device ID first before toggling between the two.

HIGH

IMPEDANCE

MODE 3

MODE 0

MSB

MSB

MSB