AT83C51RB2-3CSCM データシートの表示（PDF） - Atmel Corporation

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AT83C51RB2-3CSCM

80C51 High Performance ROM 8-bit Microcontroller

Atmel Corporation 

Table 13 shows the CCAPMn settings for the various PCA functions.

Table 13. 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)

7

6

5

4

3

2

1

-

ECOMn

CAPPn

CAPNn

MATn

TOGn

PWMn

0

ECCFn

Bit

Number

7

Bit

Mnemonic Description

-

Reserved

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

Enable Comparator

6

ECOMn Cleared to disable the comparator function.

Set to enable the comparator function.

Capture Positive

5

CAPPn Cleared to disable positive edge capture.

Set to enable positive edge capture.

Capture Negative

4

CAPNn Cleared to disable negative edge capture.

Set to enable negative edge capture.

Match

3

MATn 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.

Toggle

2

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

compare/capture register causes the CEXn pin to toggle.

Pulse Width Modulation Mode

1

PWMn 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.

Enable CCF interrupt

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

0

CCF0 an interrupt.

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

interrupt.

Reset Value = X000 0000b

Not bit addressable

28 AT80C51RD2/AT83C51Rx2

4113B–8051–03/05

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