SST25VF080B datasheet(15/33 Pages) MICROCHIP

15 / 33 page



2005-2020 Microchip Technology Inc.

DS20005045D-page 15

SST25VF080B

4.4.15

JEDEC READ-ID

The JEDEC Read-ID instruction identifies the device as

SST25VF080B and the manufacturer as Microchip.

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 manufac-

turer as Microchip. Byte 2, 25H, identifies the memory

type as SPI Serial Flash. Byte 3, 8EH, identifies the

device as SST25VF080B. The instruction sequence is

shown in Figure 4-18. The JEDEC Read ID instruction

is terminated by a low to high transition on CE# at any

time during data output.

FIGURE 4-18:

JEDEC READ-ID SEQUENCE

4.4.16

READ-ID (RDID)

The Read-ID (RDID) instruction identifies the devices

as SST25VF080B and manufacturer as Microchip.

This command is backward compatible and should be

used as default device identification when multiple ver-

sions 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 manu-

facturer’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 output data toggles between address

00000H and 00001H until terminated by a low-to-high

transition on CE#.

Refer to Table 4-5 and Table 4-6 for device identifica-

tion data.

TABLE 4-5:

JEDEC READ-ID DATA

Manufacturer’s ID

Device ID

Memory Type

Memory Capacity

Byte1

Byte 2

Byte 3

BFH

25H

8EH

CE#

SCK

012345678

High-Impedance

15 16

28 29 30 31

MODE 3

MODE 0

9 10 11 1213

1718

19 20 21 22 23

24 25 26 27

SST25VF080B датащи(PDF) 15 Page - Microchip Technology

SST25VF080B датащи(HTML) 15 Page - Microchip Technology

Html Pages

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

датащи скачать

ссылки URL