S25FL129P Meet Spansion Inc., S25FL129P Datasheet - Page 37

• Manufacturer Part Number: S25FL129P
• Description: 128-mbit Cmos 3.0 Volt Flash Memory With 104-mhz Spi Serial Peripheral Interface Multi I/o Bus
• Manufacturer: Meet Spansion Inc.

9.8
November 2, 2009 S25FL129P_00_04
Read-ID (READ_ID)
The READ_ID instruction provides the S25FL129P manufacturer and device information and is provided as
an alternative to the Release from Deep Power-Down and Read Electronic Signature (RES), and the JEDEC
Read Identification (RDID) commands.
The instruction is initiated by driving the CS# pin low and shifting in (via the SI input pin) the instruction code
“90h” followed by a 24-bit address (which is either 00000h or 00001h). Following this, the Manufacturer ID
and the Device ID are shifted out on the SO output pin starting after the falling edge of the SCK serial clock
input signal. If the 24-bit address is set to 000000h, the Manufacturer ID is read out first followed by the
Device ID. If the 24-bit address is set to 000001h, then the Device ID is read out first followed by the
Manufacturer ID. The Manufacturer ID and the Device ID are always shifted out on the SO output pin with the
MSB first, as shown in
output data toggles between address 000000H and 000001H until terminated by a low to high transition on
the CS# input pin. The maximum clock frequency for the Read-ID (90h) command is at 104 MHz
(FAST_READ). The Manufacturer ID & Device ID is output continuously until terminated by a low to high
transition on CS# chip select input pin.
SCK
CS#
SO
SI
Manufacturer Identification
Device Identification
D a t a
0
1
High Impedance
2
S h e e t
Instruction
Figure
3
Figure 9.10 Read-ID (RDID) Command Timing Diagram
4
5
9.10. Once the device is in Read-ID mode, the Manufacturer ID and Device ID
6
Table 9.7 READ_ID Data-Out Sequence
( P r e l i m i n a r y )
7
23 22 21
M
S
8
B
S25FL129P
9
24-Bit Address
10
3
28
Address
2
2
00000h
00001h
9
1
30
0
31
32
M
33
a
n
u
34
a f
c
u t
35
e r
d I
36
e
n
i t
37
c i f
t a
38
o i
n
39
40
7
41
6
D
Data
01h
v e
17h
42
5
c i
e
43
d I
4
e
n
44
i t
3
c i f
t a
2
45
o i
n
1
46
47
0
37