ESMT

F25L02PA

Elite Semiconductor Memory Technology Inc.

21/35

Read-ID (RDID)

The Read-ID instruction (RDID) identifies the devices as

F25L02PA and manufacturer as ESMT. This command is

backward compatible to all ESMT SPI devices and should be

used as default device identification when multiple versions of

ESMT SPI devices are used in one design. The device

information can be read from executing an 8-bit command, 90H,

instruction, the manufacturer’s ID is located in address 000000H

and the device ID is located in address 000001H.

Once the device is in Read-ID mode, the manufacturer’s and

device ID output data toggles between address 000000H and

000001H until terminated by a low to high transition on CE .

Figure 19: Read-ID Sequence

Table 8: Product ID Data

Address

Byte1

Byte2

8CH

11H

000000H

Manufacturer’s ID

Device ID

ESMT F25L02PA

11H

8CH

000001H

Device ID

ESMT F25L02PA

Manufacturer’s ID

CE

SCK

SI

01 23 45 67 8

15 16

23 24

31 32

39 40

47 48

55 56

63

MSB

MSB

HIGH IMPENANCE

SO

90

00

00

ADD

1

MODE3

MODE0

Note: The Manufacture’s and Device ID output stream i s continuous until terminated by a low to high transition on CE.

1. 00H will output the Manufacture’s ID first and 01H will output Device ID first before toggling between the two. .

HIGH

IMPENANCE

8C

8C

11

11

MSB