mc68hc908gp32 Freescale Semiconductor, Inc, mc68hc908gp32 Datasheet - Page 211
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mc68hc908gp32
Manufacturer Part Number
mc68hc908gp32
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GP32.pdf
(266 pages)
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17.9.4 TIM Channel Status and Control Registers
Each of the TIM channel status and control registers:
CHxF — Channel x Flag Bit
CHxIE — Channel x Interrupt Enable Bit
Freescale Semiconductor
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•
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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 logic 0 to CHxF. If another interrupt request
occurs before the clearing sequence is complete, then writing logic 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 logic 1 to CHxF has no effect.
This read/write bit enables TIM CPU interrupt service requests on channel x.
Reset clears the CHxIE bit.
1 = Input capture or output compare on channel x
0 = No input capture or output compare on channel x
1 = Channel x CPU interrupt requests enabled
0 = Channel x CPU interrupt requests disabled
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
Address: T1SC0, $0025 and T2SC0, $0030
Address: T1SC1, $0028 and T2SC1, $0033
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 17-10. TIM Channel 1 Status and Control Register (TSC1)
Figure 17-9. TIM Channel 0 Status and Control Register (TSC0)
CH0F
CH1F
Bit 7
Bit 7
0
0
0
0
= Unimplemented
CH0IE
CH1IE
6
0
6
0
MC68HC908GP32 Data Sheet, Rev. 10
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
CH0MAX
CH1MAX
Bit 0
Bit 0
0
0
I/O Registers
211
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