ESMT
(Preliminary)
F25S04PA
JEDEC Read-ID
The JEDEC Read-ID instruction identifies the device as
F25S04PA 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
F25S04PA. The instruction sequence is shown in Figure 18.
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 issued after executing the JEDEC Read-ID
instruction, issue a 00H (NOP) command before going into
Standby Mode ( CE =VIH).
CE
0
1
2
3
4 5 6 7 8 9 10 11 12 13 1415 1617 1819 2021 22 23 24 25 2627 2829 3031
MODE3
MODE0
SCK
9F
SI
MSB
HIGH IMPENANCE
SO
8C
20
13
MSB
MSB
MSB
Figure 18: JEDEC Read-ID Sequence
Table 7: JEDEC READ-ID Data
Device ID
Manufacturer’s ID
(Byte 1)
Memory Type
(Byte 2)
Memory Capacity
(Byte 3)
8CH
20H
13H
Elite Semiconductor Memory Technology Inc.
Publication Date: May 2009
Revision: 0.2 20/34
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
