C8051F85X86X Datasheet, PDF (166/290 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

C8051F85x/86x
Register 20.12. PCA0CPM1: PCA Capture/Compare Mode
Bit
7
6
5
4
3
2
1
0
Name PWM16 ECOM
CAPP
CAPN
MAT
TOG
PWM
ECCF
Type
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
SFR Address: 0xDB
Table 20.14. PCA0CPM1 Register Bit Descriptions
Bit
Name
Function
7
PWM16 16-bit Pulse Width Modulation Enable.
This bit enables 16-bit mode when Pulse Width Modulation mode is enabled.
0: 8 to 11-bit PWM selected.
1: 16-bit PWM selected.
6
ECOM Comparator Function Enable.
This bit enables the comparator function.
5
CAPP Capture Positive Function Enable.
This bit enables the positive edge capture capability.
4
CAPN Capture Negative Function Enable.
This bit enables the negative edge capture capability.
3
MAT
Match Function Enable.
This bit enables the match function. When enabled, matches of the PCA counter with a
module's capture/compare register cause the CCF1 bit in the PCA0MD register to be set
to logic 1.
2
TOG Toggle Function Enable.
This bit enables the toggle function. When enabled, matches of the PCA counter with the
capture/compare register cause the logic level on the CEX1 pin to toggle. If the PWM bit
is also set to logic 1, the module operates in Frequency Output Mode.
1
PWM Pulse Width Modulation Mode Enable.
This bit enables the PWM function. When enabled, a pulse width modulated signal is out-
put on the CEX1 pin. 8 to 11-bit PWM is used if PWM16 is cleared; 16-bit mode is used if
PWM16 is set to logic 1. If the TOG bit is also set, the module operates in Frequency
Output Mode.
0
ECCF Capture/Compare Flag Interrupt Enable.
This bit sets the masking of the Capture/Compare Flag (CCF1) interrupt.
0: Disable CCF1 interrupts.
1: Enable a Capture/Compare Flag interrupt request when CCF1 is set.
Preliminary Rev 0.6
171