AT89C51ID2-RDTIM datasheet(46/159 Pages) ATMEL

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AT89C51ID2

4289A–8051–09/03

Table 28 shows the CCAPMn settings for the various PCA functions.

Table 28. CCAPMn Registers (n = 0-4)

CCAPM0 - PCA Module 0 Compare/Capture Control Register (0DAh)

CCAPM1 - PCA Module 1 Compare/Capture Control Register (0DBh)

CCAPM2 - PCA Module 2 Compare/Capture Control Register (0DCh)

CCAPM3 - PCA Module 3 Compare/Capture Control Register (0DDh)

CCAPM4 - PCA Module 4 Compare/Capture Control Register (0DEh)

Reset Value = X000 0000b

Not bit addressable

7654

3210

ECOMn

CAPPn

CAPNn

MATn

TOGn

PWMn

ECCFn

Bit

Number

Bit

Mnemonic

Description

Reserved

The value read from this bit is indeterminate. Do not set this bit.

6ECOMn

Enable Comparator

Cleared to disable the comparator function.

Set to enable the comparator function.

CAPPn

Capture Positive

Cleared to disable positive edge capture.

Set to enable positive edge capture.

4CAPNn

Capture Negative

Cleared to disable negative edge capture.

Set to enable negative edge capture.

3MATn

Match

When MATn = 1, a match of the PCA counter with this module’s

compare/capture register causes the

CCFn bit in CCON to be set, flagging an interrupt.

2TOGn

Toggle

When TOGn = 1, a match of the PCA counter with this module’s

compare/capture register causes the

CEXn pin to toggle.

1PWMn

Pulse Width Modulation Mode

Cleared to disable the CEXn pin to be used as a pulse width modulated output.

Set to enable the CEXn pin to be used as a pulse width modulated output.

CCF0

Enable CCF interrupt

Cleared to disable compare/capture flag CCFn in the CCON register to generate

an interrupt.

Set to enable compare/capture flag CCFn in the CCON register to generate an

interrupt.

AT89C51ID2-RDTIM Datasheet(PDF) 46 Page - ATMEL Corporation

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