Flash program memory and data EEPROM RM0016
52/449 Doc ID 14587 Rev 8
4.8.2 Flash control register 2 (FLASH_CR2)
Address offset: 0x01
Reset value: 0x00
76543210
OPT WPRG ERASE FPRG
Reserved
PRG
rw rw rw rw rw
Bit 7 OPT: Write option bytes
This bit is set and cleared by software.
0: Write access to option bytes disabled
1: Write access to option bytes enabled
Bit 6 WPRG: Word programming
This bit is set by software and cleared by hardware when the operation is completed.
0: Word program operation disabled
1: Word program operation enabled
Bit 5 ERASE
(1)
: Block erasing
This bit is set by software and cleared by hardware when the operation is completed.
0: Block erase operation disabled
1: Block erase operation enabled
Bit 4 FPRG
(1)
: Fast block programming
This bit is set by software and cleared by hardware when the operation is completed.
0: Fast block program operation disabled
1: Fast block program operation enabled
Bits 3:1 Reserved
Bit 0 PRG: Standard block programming
This bit is set by software and cleared by hardware when the operation is completed.
0: Standard block programming operation disabled
1: Standard block programming operation enabled (automatically first erasing)
1. The ERASE and FPRG bits are locked when the memory is busy.
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