Motorola MC68HC05RC16, MC68HC05RC8 manual 43

Interrupts

Core Timer Interrupt

4.10 Core Timer Interrupt

This timer can create two types of interrupts. A timer overflow interrupt occurs whenever the 8-bit timer rolls over from $FF to $00 and the enable bit TOFE is set. A real-time interrupt occurs whenever the programmed time elapses and the enable bit RTIE is set. Either of these interrupts vectors to the same interrupt service routine, located at the address specified by the contents of memory locations $3FF6 and $3FF7.

MC68HC05RC16 — Rev. 3.0		General Release Specification
MOTOROLA	Interrupts	43