©2012 Silicon Storage Technology, Inc.

DS25024C

10/12

24

8 Mbit 1.8V SPI Serial Flash

SST25WF080

Not Recommended for New Designs

JEDEC Read-ID

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

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. The Device ID is assigned by the manufacturer and contains the

type of memory in the first byte and the memory capacity of the device in the second byte. See Figure

24 for the instruction sequence. The JEDEC Read ID instruction is terminated by a low to high transi-

tion on CE# at any time during data output.

Figure 24:JEDEC Read-ID Sequence

Table 8: JEDEC Read-ID Data-Out

Device ID

Manufacturer’s ID (Byte 1)

Memory Type

(Byte 2)

Memory Capacity

(Byte 3)

BFH

25H

05H

T8.0 25024

25

05H

1203 F23.0

CE#

SO

SI

SCK

012345678

HIGH IMPEDANCE

15 16

14

28 29 30 31

BF

MODE 3

MODE 0

MSB

MSB

9 10111213

1718

32

34

9F

19 20 21 22 23

33

24 25 26 27