PM0020 datasheet(68/87 Pages) STMICROELECTRONICS

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ISC logic description

PM00020

68/87

If sector is not blank checked, the value of the corresponding bits is meaningless.

Note:

Bit 51 can be used to address the OTP sector only for a blank check operation, the value of

this bit is not considered during an Erase operation, in fact the OTP cannot be erased.

It is not possible to address the Security bit, OTP, and the CFI (MFG code and ID code)

sectors.

12.4.10

Configuration register

The Lock bit value stored in the bit 63 can only be shifted out, executing the

ISC_CONFIGURATION instruction. It has no impact on the non volatile value of the Lock bit

in the Flash sector.

Configurationr[63:0]

Bit 63

Lock OTP

Bit 62:52

Reserved

Bit 51

LVD_WARNING_SELECT Defining the LVD warning signal input source.

Bit 50

LVD_RESET_SELECT Defining the LVD reset input source.

Bit 49

LVD_th Defining of the threshold of the LVD

Bits 48

CSx Mapping of CS0 and CS1

Bits 47:40

Reserved

Bits 39:32

Protection Flash Bank 1 sectors

Bits 31:0

Protection of Flash Bank 0 sectors

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