STM8S datasheet(53/467 Pages) STMICROELECTRONICS

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RM0016

Flash program memory and data EEPROM

4.8.3

Flash complementary control register 2 (FLASH_NCR2)

Address offset: 0x02

Reset value: 0xFF

654

3210

NOPT

NWPRG

NERASE

NFPRG

Reserved

NPRG

Bit 7 NOPT: Write option bytes

This bit is set and cleared by software.

0: Write access to option bytes enabled

1: Write access to option bytes disabled

Bit 6 NWPRG: Word programming

This bit is cleared by software and set by hardware when the operation is completed.

0: Word programming enabled

1: Word programming disabled

Bit 5 NERASE: Block erase

This bit is cleared by software and set by hardware when the operation is completed.

0: Block erase enabled

1: Block erase disabled

Bit 4 NFPRG: Fast block programming

This bit is cleared by software and set by software reading the register.

0: Fast block programming enabled (no erase before programming, the programmed data

values are not guaranteed when the block is not blank (fully erased) before the operation)

1: Fast block programming disabled

Bits 3:1 Reserved.

Bit 0 NPRG: Block programming

This bit is cleared by software and set by hardware when the operation is completed.

0: Block programming enabled

1: Block programming disabled

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