SST25VF032B_11 Datasheet, PDF (21/31 Pages) Microchip Technology – 32 Mbit SPI Serial Flash

A Microchip Technology Company
32 Mbit SPI Serial Flash
SST25VF032B
Data Sheet
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.
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 MODE 0
SI
9F
HIGH IMPEDANCE
SO
BF
MSB
Figure 21:JEDEC Read-ID Sequence
25
MSB
4A
1327 F22.0
Table 7: JEDEC Read-ID Data
Manufacturer’s ID
Byte1
BFH
Memory Type
Byte 2
25H
Device ID
Memory Capacity
Byte 3
4AH
T7.0 1327
©2011 Silicon Storage Technology, Inc.
21
S71327-04-000
02/11