mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 252

• Manufacturer Part Number: mc68hc908mr24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Timer Interface B (TIMB)
Advance Information
252
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
MSxB:MSxA ELSxB:ELSxA
When the TOVx bit is at logic 0, setting the CHxMAX bit forces the
duty cycle of buffered and unbuffered PWM signals to 100 percent.
As
it is set or cleared. The output stays at the 100 percent duty cycle level
until the cycle after CHxMAX is cleared.
X0
X1
1X
1X
1X
00
00
00
01
01
01
Figure 12-8
Table 12-2. Mode, Edge, and Level Selection
Timer Interface B (TIMB)
shows, the CHxMAX bit takes effect in the cycle after
00
00
01
10
11
01
10
11
01
10
11
Buffered output
Output preset
Input capture
or buffered
compare
compare
or PWM
Output
Mode
PWM
Pin under port control; initialize
Pin under port control; initialize
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
timer output level high
timer output level low
MC68HC908MR24
Freescale Semiconductor
Configuration
—
Rev. 4.1