XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 174

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

Timer Interface Module (TIM)
Advance Information
174
Address:
TOF — TIM Overflow Flag Bit
TOIE — TIM Overflow Interrupt Enable Bit
TSTOP — TIM Stop Bit
Reset:
Read:
Write:
•
•
This read/write flag is set when the TIM counter resets to $0000 after
reaching the modulo value programmed in the TIM counter modulo
registers. Clear TOF by reading the TIM status and control register
when TOF is set and then writing a logic zero to TOF. If another TIM
overflow occurs before the clearing sequence is complete, then
writing logic zero to TOF has no effect. Therefore, a TOF interrupt
request cannot be lost due to inadvertent clearing of TOF. Reset
clears the TOF bit. Writing a logic one to TOF has no effect.
This read/write bit enables TIM overflow interrupts when the TOF bit
becomes set. Reset clears the TOIE bit.
This read/write bit stops the TIM counter. Counting resumes when
TSTOP is cleared. Reset sets the TSTOP bit, stopping the TIM
counter until software clears the TSTOP bit.
1 = TIM counter has reached modulo value
0 = TIM counter has not reached modulo value
1 = TIM overflow interrupts enabled
0 = TIM overflow interrupts disabled
1 = TIM counter stopped
0 = TIM counter active
Resets the TIM counter
Prescales the TIM counter clock
Figure 11-3. TIM Status and Control Register (TSC)
$0010
Bit 7
TOF
0
0
Timer Interface Module (TIM)
= Unimplemented
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
3
0
0
MC68HC(7)08KH12
PS2
2
0
PS1
1
0
MOTOROLA
—
Rev. 1.0
Bit 0
PS0
0