C8051F120 Datasheet, PDF (340/356 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F120/1/2/3/4/5/6/7
C8051F130/1/2/3
24.3. Register Descriptions for PCA0
Following are detailed descriptions of the special function registers related to the operation of PCA0.
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset Value
CF
CR
CCF5
CCF4
CCF3
CCF2
CCF1
CCF0 00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address: 0xD8
SFR Page: 0
Bit7:
Bit6:
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
CF: PCA Counter/Timer Overflow Flag.
Set by hardware when the PCA0 Counter/Timer overflows from 0xFFFF to 0x0000. When
the Counter/Timer Overflow (CF) interrupt is enabled, setting this bit causes the CPU to vec-
tor to the CF interrupt service routine. This bit is not automatically cleared by hardware and
must be cleared by software.
CR: PCA0 Counter/Timer Run Control.
This bit enables/disables the PCA0 Counter/Timer.
0: PCA0 Counter/Timer disabled.
1: PCA0 Counter/Timer enabled.
CCF5: PCA0 Module 5 Capture/Compare Flag.
This bit is set by hardware when a match or capture occurs. When the CCF interrupt is
enabled, setting this bit causes the CPU to vector to the CCF interrupt service routine. This
bit is not automatically cleared by hardware and must be cleared by software.
CCF4: PCA0 Module 4 Capture/Compare Flag.
This bit is set by hardware when a match or capture occurs. When the CCF interrupt is
enabled, setting this bit causes the CPU to vector to the CCF interrupt service routine. This
bit is not automatically cleared by hardware and must be cleared by software.
CCF3: PCA0 Module 3 Capture/Compare Flag.
This bit is set by hardware when a match or capture occurs. When the CCF interrupt is
enabled, setting this bit causes the CPU to vector to the CCF interrupt service routine. This
bit is not automatically cleared by hardware and must be cleared by software.
CCF2: PCA0 Module 2 Capture/Compare Flag.
This bit is set by hardware when a match or capture occurs. When the CCF interrupt is
enabled, setting this bit causes the CPU to vector to the CCF interrupt service routine. This
bit is not automatically cleared by hardware and must be cleared by software.
CCF1: PCA0 Module 1 Capture/Compare Flag.
This bit is set by hardware when a match or capture occurs. When the CCF interrupt is
enabled, setting this bit causes the CPU to vector to the CCF interrupt service routine. This
bit is not automatically cleared by hardware and must be cleared by software.
CCF0: PCA0 Module 0 Capture/Compare Flag.
This bit is set by hardware when a match or capture occurs. When the CCF interrupt is
enabled, setting this bit causes the CPU to vector to the CCF interrupt service routine. This
bit is not automatically cleared by hardware and must be cleared by software.
Figure 24.10. PCA0CN: PCA Control Register
340
Rev. 1.3