MC908GR8CDWE Datasheet, PDF (358/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Freescale Semiconductor, Inc.
Timer Interface Module (TIM)
Table 22-3. Mode, Edge, and Level Selection
MSxB:MSxA ELSxB:ELSxA
Mode
X0
00
Output preset
X1
00
00
01
00
10
Input capture
00
11
01
01
Output
01
10
compare or
PWM
01
11
1X
01
Buffered
1X
10
output
compare or
1X
11
buffered PWM
Configuration
Pin under port control;
initial output level high
Pin under port control;
initial output level low
Capture on rising edge only
Capture on falling edge only
Capture on rising or
falling edge
Toggle output on compare
Clear output on compare
Set output on compare
Toggle output on compare
Clear output on compare
Set output on compare
NOTE: Before enabling a TIM channel register for input capture operation, make
sure that the PTD/TCHx pin is stable for at least two bus clocks.
TOVx — Toggle On Overflow Bit
When channel x is an output compare channel, this read/write bit
controls the behavior of the channel x output when the TIM counter
overflows. When channel x is an input capture channel, TOVx has no
effect. Reset clears the TOVx bit.
1 = Channel x pin toggles on TIM counter overflow.
0 = Channel x pin does not toggle on TIM counter overflow.
NOTE: When TOVx is set, a TIM counter overflow takes precedence over a
channel x output compare if both occur at the same time.
Technical Data
358
MC68HC908GR8 — Rev 4.0
Timer Interface Module (TIM)
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