C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 328

• Manufacturer Part Number: C8051F581-IMR
• Description: 8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
• Manufacturer: Silicon Labs

Specifications of C8051F581-IMR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051F58x/F59x
SFR Definition 28.4. PCA0CPMn: PCA0 Capture/Compare Mode
SFR Addresses: PCA0CPM0 = 0xDA
PCA0CPM4 = 0xDE, PCA0CPM5 = 0xDF, SFR Page (all registers) = 0x00
328
Note: When the WDTE bit is set to 1, the PCA0CPM5 register cannot be modified, and module 5 acts as the
Name
Reset
Bit
Type
7
6
5
4
3
2
1
0
Bit
PWM16n 16-bit Pulse Width Modulation Enable.
watchdog timer. To change the contents of the PCA0CPM5 register or the function of module 5, the Watchdog
Timer must be disabled.
ECOMn
CAPNn
CAPPn
ECCFn
PWMn
Name
TOGn
MATn
PWM16n
R/W
7
0
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.
Comparator Function Enable.
This bit enables the comparator function for PCA0 module n when set to 1.
Capture Positive Function Enable.
This bit enables the positive edge capture for PCA0 module n when set to 1.
Capture Negative Function Enable.
This bit enables the negative edge capture for PCA0 module n when set to 1.
Match Function Enable.
This bit enables the match function for PCA0 module n when set to 1. When enabled,
matches of the PCA0 counter with a module's capture/compare register cause the
CCFn bit in PCA0MD register to be set to logic 1.
Toggle Function Enable.
This bit enables the toggle function for PCA0 module n when set to 1. When enabled,
matches of the PCA0 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.
Pulse Width Modulation Mode Enable.
This bit enables the PWM function for PCA0 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.
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.
ECOMn
R/W
6
0
CAPPn
R/W
,
5
0
PCA0CPM1 = 0xDB
CAPNn
R/W
Rev. 1.2
4
0
Function
,
PCA0CPM2 = 0xDC; PCA0CPM3 = 0xDD,
MATn
R/W
3
0
TOGn
R/W
2
0
PWMn
R/W
1
0
ECCFn
R/W
0
0