Datasheet

DocID15962 Rev 13 59/131
STM8L151xx, STM8L152xx Option bytes
59
OPT5
BOR_ON:
0: Brownout reset off
1: Brownout reset on
BOR_TH[3:1]: Brownout reset thresholds. Refer to Ta ble 23 for details on the thresholds according to
the value of BOR_TH bits.
OPTBL
OPTBL[15:0]:
This option is checked by the boot ROM code after reset. Depending on
content of addresses 00 480B, 00 480C and 0x8000 (reset vector) the
CPU jumps to the bootloader or to the reset vector.
Refer to the UM0560 bootloader user manual for more details.
Table 13. Option byte description (continued)
Option
byte
No.
Option description