mc68hc908qb4 Freescale Semiconductor, Inc, mc68hc908qb4 Datasheet - Page 186

• Manufacturer Part Number: mc68hc908qb4
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Timer Interface Module (TIM)
16.8.4 TIM Channel Status and Control Registers
Each of the TIM channel status and control registers does the following:
CHxF — Channel x Flag Bit
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When channel x is an input capture channel, this read/write bit is set when an active edge occurs on
the channel x pin. When channel x is an output compare channel, CHxF is set when the value in the
counter registers matches the value in the TIM channel x registers.
Clear CHxF by reading the TSCx register with CHxF set and then writing a 0 to CHxF. If another
interrupt request occurs before the clearing sequence is complete, then writing 0 to CHxF has no
effect. Therefore, an interrupt request cannot be lost due to inadvertent clearing of CHxF.
Flags input captures and output compares
Enables input capture and output compare interrupts
Selects input capture, output compare, or PWM operation
Selects high, low, or toggling output on output compare
Selects rising edge, falling edge, or any edge as the active input capture trigger
Selects output toggling on TIM overflow
Selects 0% and 100% PWM duty cycle
Selects buffered or unbuffered output compare/PWM operation
Reset:
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Figure 16-10. TIM Channel 1 Status and Control Register (TSC1)
Figure 16-11. TIM Channel 2 Status and Control Register (TSC2)
Figure 16-12. TIM Channel 3 Status and Control Register (TSC3)
Figure 16-9. TIM Channel 0 Status and Control Register (TSC0)
CH0F
CH1F
CH2F
CH3F
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
0
0
0
0
0
= Unimplemented
CH0IE
CH1IE
CH2IE
CH3IE
6
0
6
0
6
0
6
0
MC68HC908QB8 Data Sheet, Rev. 2
MS0B
MS2B
5
0
5
0
0
5
0
5
0
0
MS0A
MS1A
MS2A
MS3A
0
0
0
0
4
4
4
4
ELS0B
ELS2B
ELS1B
ELS3B
3
0
3
0
3
0
3
0
ELS0A
ELS1A
ELS2A
ELS3A
2
0
2
0
2
0
2
0
TOV0
TOV1
TOV2
TOV3
1
0
1
0
1
0
1
0
CH0MAX
CH1MAX
CH2MAX
CH3MAX
Freescale Semiconductor
Bit 0
Bit 0
Bit 0
Bit 0
0
0
0
0