C8051F336 Datasheet, PDF (226/234 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F336/7/8/9
SFR Definition 25.4. PCA0CPMn: PCA Capture/Compare Mode
Bit
7
6
5
4
3
2
1
0
Name PWM16n ECOMn CAPPn CAPNn MATn
TOGn PWMn ECCFn
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
SFR Addresses: PCA0CPM0 = 0xDA, PCA0CPM1 = 0xDB, PCA0CPM2 = 0xDC
Bit Name
Function
7 PWM16n 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 ECOMn Comparator Function Enable.
This bit enables the comparator function for PCA module n when set to ‘1’.
5 CAPPn Capture Positive Function Enable.
This bit enables the positive edge capture for PCA module n when set to ‘1’.
4 CAPNn Capture Negative Function Enable.
This bit enables the negative edge capture for PCA module n when set to ‘1’.
3 MATn Match Function Enable.
This bit enables the match function for PCA module n when set to ‘1’. When enabled,
matches of the PCA counter with a module's capture/compare register cause the CCFn
bit in PCA0MD register to be set to logic 1.
2 TOGn Toggle Function Enable.
This bit enables the toggle function for PCA module n when set to ‘1’. When enabled,
matches of the PCA counter with a module's capture/compare register cause the logic
level on the CEXn pin to toggle. If the PWMn bit is also set to logic 1, the module oper-
ates in Frequency Output Mode.
1 PWMn Pulse Width Modulation Mode Enable.
This bit enables the PWM function for PCA module n when set to ‘1’. When enabled, a
pulse width modulated signal is output on the CEXn pin. 8 to 11-bit PWM is used if
PWM16n is cleared; 16-bit mode is used if PWM16n is set to logic 1. If the TOGn bit is
also set, the module operates in Frequency Output Mode.
0 ECCFn Capture/Compare Flag Interrupt Enable.
This bit sets the masking of the Capture/Compare Flag (CCFn) interrupt.
0: Disable CCFn interrupts.
1: Enable a Capture/Compare Flag interrupt request when CCFn is set.
Note: When the WDTE bit is set to ‘1’, the PCA0CPM2 register cannot be modified, and module 2 acts as the
watchdog timer. To change the contents of the PCA0CPM2 register or the function of module 2, the Watchdog
Timer must be disabled.
226
Rev. 0.2