C8051F002 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F002

Mixed-Signal 32KB ISP FLASH MCU Family

Silicon Laboratories 

C8051F000/1/2/5/6/7

C8051F010/1/2/5/6/7

20.3. Register Descriptions for PCA

The system device may implement one or more Programmable Counter Arrays. Following are detailed descriptions

of the special function registers related to the operation of the PCA. The CIP-51 System Controller section of the

datasheet provides additional information on the SFRs and their use.

Figure 20.8. PCA0CN: PCA Control Register

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Reset Value

CF

CR

-

CCF4

CCF3

CCF2

CCF1

CCF0 00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SFR Address:

(bit addressable)

0xD8

Bit7:

CF: PCA Counter/Timer Overflow Flag.

Set by hardware when the PCA Counter/Timer overflows from 0xFFFF to 0x0000. When

the Counter/Timer Overflow (CF) interrupt is enabled, setting this bit causes the CPU to

vector to the CF interrupt service routine. This bit is not automatically cleared by

hardware and must be cleared by software.

Bit6:

CR: PCA Counter/Timer Run Control.

This bit enables/disables the PCA Counter/Timer.

0: PCA Counter/Timer disabled.

1: PCA Counter/Timer enabled.

Bit5: UNUSED. Read = 0, Write = don’t care.

Bit4:

CCF4: PCA 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.

Bit3:

CCF3: PCA 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.

Bit2:

CCF2: PCA 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.

Bit1:

CCF1: PCA 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.

Bit0:

CCF0: PCA 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.

Rev. 1.7

160

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