stm8af6166tdy STMicroelectronics, stm8af6166tdy Datasheet - Page 47

• Manufacturer Part Number: stm8af6166tdy
• Description: Automotive 8-bit Mcu, With Up To 32 Kbytes Flash, Data Eeprom, 10-bit Adc, Timers, Lin, Spi, I2c, 3 To 5.5 V
• Manufacturer: STMicroelectronics

STM8AF61xx, STM8AF62xx
Table 18.
Option byte no.
OPT12
OPT13
OPT14
OPT15
OPT16
OPT17
Option byte description (continued)
TMU_KEY 5 [7:0]: Temporary unprotection key 4
TMU_KEY 6 [7:0]: Temporary unprotection key 5
TMU_KEY 7 [7:0]: Temporary unprotection key 6
TMU_KEY 8 [7:0]: Temporary unprotection key 7
TMU_MAXATT [7:0]: TMU access failure counter
BL [7:0]: Bootloader enable
Temporary unprotection key: Must be different from 0x00 or 0xFF
Temporary unprotection key: Must be different from 0x00 or 0xFF
Temporary unprotection key: Must be different from 0x00 or 0xFF
Temporary unprotection key: Must be different from 0x00 or 0xFF
TMU_MAXATT can be initialized with the desired value only if TMU is
disabled (TMU[3:0]=0101 in OPT6 option byte).
When TMU is enabled, any attempt to temporary remove the readout
protection by using wrong key values increments the counter.
When the option byte value reaches 0x08, the Flash memory and data
EEPROM are erased.
If this option byte is set to 0x55 (complementary value 0xAA) the
bootloader program is activated also in case of a programmed code
memory
(for more details, see the bootloader user manual, UM0560).
Doc ID 14952 Rev 5
Description
Option bytes
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