mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 247

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC708MP16
Freescale Semiconductor
NOTE:
—
Rev. 3.1
TOVx — Toggle-On-Overflow Bit
When TOVx is set, a TIMB counter overflow takes precedence over a
channel x output compare if both occur at the same time.
CHxMAX — Channel x Maximum Duty Cycle Bit
MSxB:MSxA
When channel x is an output compare channel, this read/write bit
controls the behavior of the channel x output when the TIMB counter
overflows. When channel x is an input capture channel, TOVx has no
effect. Reset clears the TOVx bit.
When the TOVx bit is at logic 0, setting the CHxMAX bit forces the
duty cycle of buffered and unbuffered PWM signals to 100%. As
Figure 12-8
is set or cleared. The output stays at the 100% duty cycle level until
the cycle after CHxMAX is cleared.
1 = Channel x pin toggles on TIMB counter overflow.
0 = Channel x pin does not toggle on TIMB counter overflow.
X0
X1
1X
1X
1X
00
00
00
01
01
01
Timer Interface Module B (TIMB)
Table 12-2. Mode, Edge, and Level Selection
ELSxB:ELSxA
shows, the CHxMAX bit takes effect in the cycle after it
00
00
01
10
11
01
10
11
01
10
11
Output Compare
Buffered Output
Output Preset
Input Capture
Buffered PWM
Compare or
or PWM
Mode
Timer Interface Module B (TIMB)
Pin under Port Control;
Pin under Port Control;
Capture on Rising Edge
Capture on Falling Edge
Capture on Rising or Falling
Toggle Output on Compare
Clear Output on Compare
Set Output on Compare
Toggle Output on Compare
Clear Output on Compare
Set Output on Compare
Initial Output Level High
Initial Output Level Low
Only
Only
Edge
Configuration
Technical Data
247