M25PX32 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M25PX32

Serial Flash Memory

STMicroelectronics 

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Instructions

M25PX32

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

DQ0

S

C

23 22 21

MSB

321076543210

MSB

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Data byte 2

Data byte 3

Data byte n

DQ0

7654321076543210

MSB

MSB

76543210

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

Byte Byte Byte

012

Byte Byte

63 64

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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