16 Mbit SPI Serial Flash
SST25VF016B
A Microchip Technology Company
Data Sheet
JEDEC Read-ID
The JEDEC Read-ID instruction identifies the device as SST25VF016B 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. Byte 1, BFH, identifies the manufacturer as SST. Byte 2, 25H,
identifies the memory type as SPI Serial Flash. Byte 3, 41H, identifies the device as SST25VF016B.
The instruction sequence is shown in Figure 20. The JEDEC Read ID instruction is terminated by a low
to high transition on CE# at any time during data output. If no other command is issued after executing
the JEDEC Read-ID instruction, issue a 00H (NOP) command before going into Standby Mode
(CE#=VIH).
CE#
MODE 3
MODE 0
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
9F
HIGH IMPEDANCE
BF
25
41
SO
MSB
MSB
1271 JEDECID.1
Figure 20:JEDEC Read-ID Sequence
Table 6: JEDEC Read-ID Data
Device ID
Manufacturer’s ID
Memory Type
Byte 2
Memory Capacity
Byte1
BFH
Byte 3
41H
25H
T6.0 1271
©2011 Silicon Storage Technology, Inc.
S71271-04-000
01/11
20
SST [ SILICON STORAGE TECHNOLOGY, INC ]
