mc68hc908gp20 Freescale Semiconductor, Inc, mc68hc908gp20 Datasheet - Page 374

• Manufacturer Part Number: mc68hc908gp20
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Advance Information
374
NOTE:
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 TOVx is set, a TIM counter overflow takes precedence over a
channel x output compare if both occur at the same time.
MSxB:MSxA
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.
X0
X1
00
00
00
01
01
01
1X
1X
1X
Table 22-3. Mode, Edge, and Level Selection
ELSxB:ELSxA
00
00
01
10
11
01
10
11
01
10
11
buffered PWM
Output preset
Input capture
compare or
compare or
Buffered
Output
output
Mode
PWM
Capture on falling edge only
Capture on rising edge only
Toggle output on compare
Toggle output on compare
MC68HC908GP20
Clear output on compare
Clear output on compare
Set output on compare
Set output on compare
Pin under port control;
initial output level high
Pin under port control;
initial output level low
Capture on rising or
Freescale Semiconductor
Configuration
falling edge
—
Rev 2.1