MC68HC908LB8_05 Datasheet, PDF (97/234 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Functional Description
The rate of switching is controlled by the dithering controller, and is dependent on the values of the
CLKSRC bit and the SEL[2:0] bits in the HRPDCR register, the contents of the HRPTBH:HRPTBL
registers, and, depending on the value of the HRPMODE bit, the five least significant bits in the HRPPERL
or HRPDCL registers.
Table 10-2. HRPMODE Bit Options
HRPMODE
0
1
Mode
Variable
Frequency
Variable Duty
Cycle
PERIOD1
P[10:0]
P[10:0]
PERIOD2
P[10:0] +1
DUTY1
DUTY2
PERIOD1/2 PERIOD2/2
P[10:0]
DC[10:0]
DC[10:0] +1
For more detailed information, see 10.4.7 Dithering Controller.
MC68HC908LB8 Data Sheet, Rev. 1
Freescale Semiconductor
97