ESMT

F25S004A

Elite Semiconductor Memory Technology Inc.

Publication Date: Jan. 2009

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JEDEC Read-ID

The JEDEC Read-ID instruction identifies the device as F25S004A and the manufacturer as ESMT. 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, 8CH, is output from the

device. After that, a 16-bit device ID is shifted out on the SO pin. Byte1, 8CH, identifies the manufacturer as ESMT. Byte2, 20H,

identifies the memory type as SPI Flash. Byte3, 13H, identifies the device as F25S004A. The instruction sequence is shown in Figure17.

The JEDEC Read ID instruction is terminated by a low to high transition on CE at any time during data output. If no other command is

Figure 17 : Jedec Read ID Sequence

Table 9 : JEDEC READ-ID DATA

Device ID

Manufacturer’s ID

Memory Type

Memory Capacity

Byte1

Byte 2

Byte 3

8CH

20H

13H

CE

SCK

SI

0 1 234 5 6 78 9

HIGH IMPENANCE

SO

9F

MODE3

MODE0

10 11 12 1314 1516 171819 20 2122 2324 2526 272829 30 3132 3334

8C

20

13

MSB

MSB