Datasheet

 2015 Microchip Technology Inc. DS20005045C-page 17

SST25VF080B

4.4.16 READ-ID (RDID)

The Read-ID instruction (RDID) identifies the devices

as SST25VF080B and manufacturer as Microchip. This

command is backward compatible 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 [A

]. Following the Read-ID instruction, the manufac-

turer’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 manufacturer’s and device ID out-

put data toggles between address 00000H and 00001H

until terminated by a low to high transition on CE#.

Refer to Tables 4-5 and 4-6 for device identification

data.

FIGURE 4-19: READ-ID SEQUENCE

TABLE 4-6: PRODUCT IDENTIFICATION

Address Data

Manufacturer’s ID 00000H BFH

Device ID

SST25VF080B 00001H 8EH

0 25045

1265 RdID.0

CE#

SCK

012345678

00 ADD

90 or AB

HIGH IMPEDANCE

15 16

47 48 55 56 63

Device ID

HIGH

IMPEDANCE

MODE 3

MODE 0

MSB MSB

MSB

Note: The manufacturer’s and device ID output stream is continuous until terminated by a low-to-high transition on

CE#.

Device ID = 8EH for SST25VF080B