16 Mbit SPI Serial Flash
SST25VF016B
A Microchip Technology Company
Data Sheet
Read-ID (RDID)
The Read-ID instruction (RDID) identifies the devices as SST25VF016B and manufacturer as SST.
This command is backward compatible to all SST25xFxxxA devices and should be used as default
device identification when multiple versions of SPI Serial Flash devices are used in a design. The
device information can be read from executing an 8-bit command, 90H or ABH, followed by address
bits [A23-A0]. 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.
CE#
MODE 3
MODE 0
0
1
2
3
4
5
6
7
8
15 16
23
31
39
40
47 48
55 56
63
24
32
SCK
90 or AB
00
00
ADD1
MSB
SI
MSB
HIGH
IMPEDANCE
HIGH IMPEDANCE
Device ID
Device ID
BF
BF
SO
MSB
Note: The manufacturer s and device ID output stream is continuous until terminated by a low to high transition on CE#.
Device ID = 41H for SST25VF016B
1. 00H will output the manfacturer s ID first and 01H will output device ID first before toggling between the two.
1271 RdID.0
Figure 21:Read-ID Sequence
Table 7: Product Identification
Address
Data
Manufacturer’s ID
Device ID
00000H
BFH
SST25VF016B
00001H
41H
T7.0 1271
©2011 Silicon Storage Technology, Inc.
S71271-04-000
01/11
21
SST [ SILICON STORAGE TECHNOLOGY, INC ]
