Datasheet

©2011 Silicon Storage Technology, Inc. DS25071A 12/11
20
32 Mbit SPI Serial Flash
SST25VF032B
Data Sheet
A
Microchip Technology Company
Read-ID (RDID)
The Read-ID instruction (RDID) identifies the device as SST25VF032B and manufacturer as SST. The
device information can be read from 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 00000H
and the device ID is located in address 00001H. Once the device is in Read-ID mode, the manufac-
turer’s and device ID output data toggles between address 00000H and 00001H until terminated by a
low to high transition on CE#.
Refer to Tables 6 and 7 for device identification data.
Figure 20: Read-ID Sequence
Table 6: Product Identification
Address Data
Manufacturer’s ID 00000H BFH
Device ID
SST25VF032B 00001H 4AH
T6.0 25071
1327 F21.0
CE#
SO
SI
SCK
00
012345678
00 ADD
1
90 or AB
HIGH IMPEDANCE
15 16
23
24
31
32
39
40
47 48 55 56 63
BF
Device ID
BF
Device ID
Note: The manufacturer s and device ID output stream is continuous until terminated by a low to high transition on CE#.
1. 00H will output the manfacturer s ID first and 01H will output device ID first before toggling between the two.
HIGH
IMPEDANCE
MODE 3
MODE 0
MSB MSB
MSB