Instructions
M25PX64
Figure 20. Program OTP (POTP) instruction sequence
S
0
1
2
3
4
5
6
7
8
9
10
28 29 30 31 32 33 34 35 36 37 38 39
C
Instruction
24-bit address
Data byte 1
23 22 21
MSB
3
2
1
0
7
6
5
4
3
2
0
1
DQ0
S
MSB
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
C
Data byte 2
Data byte 3
Data byte n
7
6
5
4
3
2
0
7
6
5
4
3
2
0
7
6
5
4
3
2
0
1
1
1
DQ0
MSB
MSB
MSB
AI13575
1. A23 to A7 are don't care.
2. 1 ≤ n ≤ 65.
Figure 21. How to permanently lock the 64 OTP bytes
64 data bytes
OTP control byte
ByteByteByte
ByteByte
63 64
0
1
2
X
X
X
X
X
X
X
bit 0 When bit 0 = 0
the 64 OTP bytes
become read only
Bit 1 to bit 7 are not programmable
ai13587
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NUMONYX [ NUMONYX B.V ]
