Software Reset - Renesas M16C Series Hardware Manual

R8C/11 Group

5.2 Software Reset

When the PM03 bit in the PM0 register is set to "1" (microcomputer reset), the microcomputer has its pins,
CPU, and SFR initialized. Then the program is executed starting from the address indicated by the reset
vector. After reset, the low-speed on-chip oscillator clock divided by 8 is automatically selected for the
CPU. Some SFRs are not initialized by the software reset. Refer to Chapter 4, "SFR."
5.3 Watchdog Timer Reset
Where the PM12 bit in the PM1 register is "1" (reset when watchdog timer underflows), the microcom-
puter initializes its pins, CPU and SFR if the watchdog timer underflows. Then the program is executed
starting from the address indicated by the reset vector. After reset, the low-speed on-chip oscillator clock
divided by 8 is automatically selected for the CPU. Some SFRs are not initialized by the watchdog timer
reset. Refer to Chapter 4, "SFR."
Rev.1.20 Jan 27, 2006
REJ09B0062-0120
page 20 of 204
5.2 Software Reset, 5.3 Watchdog Timer Reset