C8051F020-TB Silicon Laboratories Inc, C8051F020-TB Datasheet - Page 259

• Manufacturer Part Number: C8051F020-TB
• Description: BOARD PROTOTYPING W/C8051F020
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F020-TB

• Contents: Board
• Processor To Be Evaluated: C8051F02x
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F020
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

23.3. Register Descriptions for PCA0
Following are detailed descriptions of the special function registers related to the operation of PCA0.
Bit7:
Bit6:
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
R/W
Bit7
CF
CF: PCA Counter/Timer Overflow Flag.
Set by hardware when the PCA0 Counter/Timer overflows from 0xFFFF to 0x0000. When the Coun-
ter/Timer Overflow (CF) interrupt is enabled, setting this bit causes the CPU to vector to the CF inter-
rupt service routine. This bit is not automatically cleared by hardware and must be cleared by
software. See “Important Note About the PCA0CN Register” on page 251.
CR: PCA0 Counter/Timer Run Control.
This bit enables/disables the PCA0 Counter/Timer.
0: PCA0 Counter/Timer disabled.
1: PCA0 Counter/Timer enabled.
UNUSED. Read = 0b, Write = don't care.
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, set-
ting this bit causes the CPU to vector to the CCF interrupt service routine. This bit is not automati-
cally 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, set-
ting this bit causes the CPU to vector to the CCF interrupt service routine. This bit is not automati-
cally 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, set-
ting this bit causes the CPU to vector to the CCF interrupt service routine. This bit is not automati-
cally 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, set-
ting this bit causes the CPU to vector to the CCF interrupt service routine. This bit is not automati-
cally 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, set-
ting this bit causes the CPU to vector to the CCF interrupt service routine. This bit is not automati-
cally cleared by hardware and must be cleared by software.
R/W
CR
Bit6
Figure 23.10. PCA0CN: PCA Control Register
R/W
Bit5
-
CCF4
R/W
Bit4
CCF3
R/W
Bit3
Rev. 1.4
CCF2
R/W
Bit2
CCF1
C8051F020/1/2/3
R/W
Bit1
(bit addressable)
CCF0
R/W
Bit0
SFR Address:
00000000
Reset Value
0xD8
259