S25FL004K Meet Spansion Inc., S25FL004K Datasheet - Page 55

• Manufacturer Part Number: S25FL004K
• Description: 4-mbit / 8-mbit / 16-mbit Cmos 3.0 Volt Flash Memory With 104-mhz Spi Serial Peripheral Interface Multi I/o Bus
• Manufacturer: Meet Spansion Inc.

7.31
July 14, 2011 S25FL004K-016K_00_02
Read JEDEC ID (9Fh)
For compatibility reasons, the S25FL004K/S25FL008K/S25FL016K provides several instructions to
electronically determine the identity of the device. The Read JEDEC ID instruction is compatible with the
JEDEC standard for SPI compatible serial flash memories that was adopted in 2003. The instruction is
initiated by driving the CS# pin low and shifting the instruction code “9Fh”. The JEDEC assigned
Manufacturer ID byte and two Device ID bytes, Memory Type (ID15-ID8) and Capacity (ID7-ID0) are then
shifted out on the falling edge of CLK with most significant bit (MSB) first as shown in
memory type and capacity values refer to Manufacturer and Device Identification table.
CLK
CLK
CS#
CS#
SO
SO
SI
SI
Mode 3
Mode 0
= MSB
15
15
7
16
16
D a t a
0
6
S25FL004K / S25FL008K / S25FL016K
17
17
Memory Type ID15-ID8
Figure 7.35 Read JEDEC ID Instruction Sequence
1
5
18
18
High Impedance
Instruction (9Fh)
2
4
S h e e t
19
19
3
3
20
20
4
2
21
21
5
1
22
22
6
0
23
23
7
7
24
24
8
6
25
25
9
5
Capacity ID7-ID0
26
Manufacturer ID (EFh)
26
10
4
27
27
11
3
28
28
12
2
29
29
13
1
30
30 31
14 15
0
31
Figure
Mode 3
Mode 0
7.35. For
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