mc68hc908lb8 Freescale Semiconductor, Inc, mc68hc908lb8 Datasheet - Page 198

• Manufacturer Part Number: mc68hc908lb8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Timer Interface Module (TIM)
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
TIM counter registers matches the value in the TIM channel x registers.
When TIM CPU interrupt requests are enabled (CHxIE = 1), clear CHxF by reading TIM channel x
status and control 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.
Reset clears the CHxF bit. Writing a 1 to CHxF has no effect.
1 = Input capture or output compare on channel x
0 = No input capture or output compare on channel x
Selects output toggling on TIM overflow
Selects 0% and 100% PWM duty cycle
Selects buffered or unbuffered output compare/PWM operation
Address: $0025
Address: $0028
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 18-10. TIM Channel 0 Status and Control Register (TSC0)
Figure 18-11. TIM Channel 1 Status and Control Register (TSC1)
CH0F
CH1F
Bit 7
Bit 7
0
0
0
0
CH0IE
CH1IE
6
0
6
0
MC68HC908LB8 Data Sheet, Rev. 1
MS0B
5
0
5
0
0
MS0A
MS1A
4
0
4
0
ELS0B
ELS1B
3
0
3
0
ELS0A
ELS1A
2
0
2
0
TOV0
TOV1
1
0
1
0
Freescale Semiconductor
CH0MAX
CH1MAX
Bit 0
Bit 0
0
0