S25FL129P Meet Spansion Inc., S25FL129P Datasheet - Page 51

• 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.

9.22
9.23
November 2, 2009 S25FL129P_00_04
OTP Program (OTPP)
Read OTP Data Bytes (OTPR)
The OTP Program command programs data in the OTP region, which is in a different address space from the
main array data. Refer to
Program command is the same as the Page Program command, except that the OTP Program command
requires exactly one byte of data; otherwise, the command will be ignored. To program the OTP in bit
granularity, the rest of the bits within the data byte can be set to “1”.
The OTP memory space can be programmed one or more times, provided that the OTP memory space is not
locked (as described in “Locking OTP Regions”). Subsequent OTP programming can be performed only on
the unprogrammed bits (that is, “1” data).
Note: The Write Enable (WREN) command must precede the OTPP command before programming of the
OTP can occur.
The Read OTP Data Bytes command reads data from the OTP region. Refer to
the OTP region. The protocol of the Read OTP Data Bytes command is the same as the Fast Read Data
Bytes command except that it will not wrap to the starting address after the OTP address is at its maximum;
instead, the data will be indeterminate.
SCK
SO
CS
SI
SCK
SI
CS#
D a t a
0
1
High Impedance
2
0
Instruction
3
S h e e t
1
4
OTP Regions on page 52
2
5
Instruction
6
Figure 9.26 OTP Program Instruction Sequence
3
Figure 9.27 Read OTP Instruction Sequence
7
4
23
( P r e l i m i n a r y )
8
22
5
9
21
1
S25FL129P
0
Address
6
24 Bit
28
7
3
MSB
23
29
2
8
30
22
1
9
3
for details on the OTP region. The protocol of the OTP
1
0
21
10
3
2
7
Address
24 Bit
33
6
34
Dummy Byte
28
5
3
35
4
29
2
36
3
30
37
2
1
1
38
31
0
0
3
MSB
9
32
MSB
7
7
4
0
33
6
6
41
“OTP
5
42
DATA OUT 1
34
5
Data Byte 1
4
43
35
4
3
44
Regions” for details on
36
3
2
45
1
46
37
2
0
4
7
1
MSB
38
7
DATA OUT 2
0
39
51