ST10F273E datasheet(37/179 Pages) STMICROELECTRONICS

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ST10F273E

Internal Flash memory

37/179

5.5.2

Flash non volatile write protection I register low

FNVWPIRL (0x0E DFB4)

NVR

Delivery value: FFFFh

5.5.3

Flash non volatile write protection I register high

FNVWPIRH (0x0E DFB6)

NVR

Delivery value: FFFFh

5.5.4

Flash non volatile access protection register 0

FNVAPR0 (0x0E DFB8)

NVR

Delivery value: ACFFh

9876543

210

reserved

W0P9 W0P8 W0P7 W0P6 W0P5 W0P4 W0P3 W0P2 W0P1 W0P0

Table 19.

Flash non volatile write protection register low

Bit

Function

W0P(9:0)

Write protection bank 0 / sectors 9-0

These bits, if programmed at 0, disable any write access to the sectors of Bank 0 (IFlash).

9876543

210

reserved

W1P1 W1P0

Table 20.

Flash non volatile protection register high

Bit

Function

W1P(1:0)

Write protection bank 1 / sectors 1-0

These bits, if programmed at 0, disable any write access to the sectors of Bank 1 (IFlash).

reserved

DBGP ACCP

Table 21.

Flash non volatile access protection register 0

Bit

Function

ACCP

Access protection

This bit, if programmed at 0, disables any access (read/write) to data mapped inside IFlash Module

address space, unless the current instruction is fetched from IFlash.

DBGP

Debug protection

This bit, if erased at 1, allows to by-pass all the protections using the Debug features through the

Test Interface. If programmed at 0, on the contrary, all the debug features, the Test Interface and all

the Flash Test Modes are disabled. Even STMicroelectronics will not be able to access the device

to run any eventual failure analysis.

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