STM8L101XX Datasheet, PDF (35/77 Pages) STMicroelectronics – 8-bit ultralow power microcontroller with up to 8 Kbytes Flash, multifunction timers, comparators, USART, SPI, I2C

STM8L101xx
Option bytes
Table 11. Option byte description (continued)
OPT4
IWDG_HW: Independent watchdog
0: Independent watchdog activated by software
1: Independent watchdog activated by hardware
IWDG_HALT: Independent window watchdog reset on Halt/Active-halt
0: Independent watchdog continues running in Halt/Active-halt mode
1: Independent watchdog stopped in Halt/Active-halt mode
1. 0x00 is the only allowed value for 4 Kbyte STM8L101xx devices.
Caution: After a device reset, read access to the program memory is not guaranteed if address
0x4807 is not programmed to 0x00.
Doc ID 15275 Rev 7
35/77