8 Mbit 1.8V SPI Serial Flash
A Microchip Technology Company
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.
CE#
MODE 3
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
SCK
SI
MODE 0
9F
SO
HIGH IMPEDANCE
BF
25
05H
MSB
MSB
1203 F23.0
Figure 24: JEDEC Read-ID Sequence
Table 8: JEDEC Read-ID Data-Out
Device ID
Memory Type
Memory Capacity
Manufacturer’s ID (Byte 1)
BFH
(Byte 2)
25H
(Byte 3)
05H
T8.0 25024
?2012 Silicon Storage Technology, Inc.
24
DS25024B
03/12
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