MC68HC908LB8_05 Datasheet, PDF (117/234 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

11.13 Timer Interface Module (TIM)
Timer Interface Module (TIM)
11.13.1 Wait Mode
The timer interface module (TIM) remains active in wait mode. Any enabled CPU interrupt request from
the TIM can bring the MCU out of wait mode.
If TIM functions are not required during wait mode, reduce power consumption by stopping the TIM before
executing the WAIT instruction.
11.13.2 Stop Mode
The TIM is inactive in stop mode. The STOP instruction does not affect register states or the state of the
TIM counter. TIM operation resumes when the MCU exits stop mode after an external interrupt.
11.14 Exiting Wait Mode
These events restart the CPU clock and load the program counter with the reset vector or with an interrupt
vector:
• External reset — A logic 0 on the RST pin resets the MCU and loads the program counter with the
contents of locations: $FFFE and $FFFF.
• External interrupt — A high-to-low transition on an external interrupt pin (IRQ pin) loads the
program counter with the contents of locations: $FFFA and $FFFB.
• Break (BRK) interrupt — A break interrupt loads the program counter with the contents of: $FFFC
and $FFFD.
• Computer operating properly (COP) module reset — A timeout of the COP counter resets the MCU
and loads the program counter with the contents of: $FFFE and $FFFF.
• Low-voltage inhibit (LVI) module reset — A power supply voltage below the V_TRIPF voltage resets
the MCU and loads the program counter with the contents of locations: $FFFE and $FFFF.
• Keyboard interrupt (KBI) module — A CPU interrupt request from the KBI module loads the
program counter with the contents of: $FFE0 and $FFE1.
• Timer interface (TIM) module interrupt — A CPU interrupt request from the TIM loads the program
counter with the contents of:
– $FFF2 and $FFF3; TIM overflow
– $FFF4 and $FFF5; TIM channel 1
– $FFF6 and $FFF7; TIM channel 0
• Analog-to-digital converter (ADC) module interrupt — A CPU interrupt request from the ADC loads
the program counter with the contents of: $FFDF and $FFDE.
• Pulse-Width Modulator with Fault Input (PWM) — A CPU interrupt request from the PWM load the
program counter with the contents of:
– $FFF1 and $FFF0; FAULT
– $FFEF and $FFEE; PWMINT
• High Resolution PWM (HRP) — A CPU interrupt request from the HRP loads the program counter
with the contents of: $FFED and $FFEC
MC68HC908LB8 Data Sheet, Rev. 1
Freescale Semiconductor
117