Datasheet

©2011 Silicon Storage Technology, Inc. DS25071A 12/11
21
32 Mbit SPI Serial Flash
SST25VF032B
Data Sheet
A
Microchip Technology Company
JEDEC Read-ID
The JEDEC Read-ID instruction identifies the device as SST25VF032B 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 24-bit
device ID is shifted out on the SO pin. Byte 1, BFH, identifies the manufacturer as SST. Byte 2, 25H,
identifies the memory type as SPI Serial Flash. Byte 3, 4AH, identifies the device as SST25VF032B.
The instruction sequence is shown in Figure 21. The JEDEC Read ID instruction is terminated by a low
to high transition on CE# at any time during data output.
Figure 21: JEDEC Read-ID Sequence
Table 7: JEDEC Read-ID Data
Device ID
Manufacturer’s ID Memory Type Memory Capacity
Byte1 Byte 2 Byte 3
BFH 25H 4AH
T7.0 25071
25 4A
1327 F22.0
CE#
SO
SI
SCK
012345678
HIGH IMPEDANCE
15 1614 28 29 30 31
BF
MODE 3
MODE 0
MSBMSB
9 10111213 1718 32 34
9F
19 20 21 22 23 3324 25 26 27