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8 Mbit 1.8V SPI Serial Flash
A Microchip Technology Company
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
[A 23 -A 0 ]. Following the Read-ID instruction, the manufacturer’s ID is located in address 000000H and
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#.
Table 7: Product Identification
Address
Data
Manufacturer’s ID
Device ID
SST25WF080
000000H
000001H
BFH
05H
T7.25024
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
MSB
90 or AB
00
00
ADD
MSB
HIGH
SO
HIGH IMPEDANCE
BF
Device ID
BF
Device ID
IMPEDANCE
MSB
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.
1203 F22.0
Figure 23: Read-ID Sequence
?2012 Silicon Storage Technology, Inc.
23
DS25024B
03/12
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