MC68HC708MP16CFU

Manufacturer Part NumberMC68HC708MP16CFU
ManufacturerFreescale Semiconductor, Inc
MC68HC708MP16CFU datasheet
 
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Page 247/398

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MSxB:MSxA
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 TIMB counter
overflows. When channel x is an input capture channel, TOVx has no
effect. Reset clears the TOVx bit.
NOTE:
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
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.
MC68HC708MP16
Rev. 3.1
Freescale Semiconductor
Table 12-2. Mode, Edge, and Level Selection
ELSxB:ELSxA
X0
00
Output Preset
X1
00
00
01
00
10
Input Capture
00
11
01
01
Output Compare
01
10
01
11
1X
01
Buffered Output
1X
10
Buffered PWM
1X
11
1 = Channel x pin toggles on TIMB counter overflow.
0 = Channel x pin does not toggle on TIMB counter overflow.
shows, the CHxMAX bit takes effect in the cycle after it
Timer Interface Module B (TIMB)
Timer Interface Module B (TIMB)
Mode
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
or PWM
Set Output on Compare
Toggle Output on Compare
Compare or
Clear Output on Compare
Set Output on Compare
Technical Data
247