T89C51CC02CA-RATIM datasheet(106/145 Pages) ATMEL

Numer części	T89C51CC02CA-RATIM

Szczegółowy opis	Enhanced 8-bit Microcontroller with CAN Controller and Flash Memory

PDF	145 Pages

Scroll/Zoom	100%

Producent	ATMEL [ATMEL Corporation]

Strona internetowa	http://www.atmel.com

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106

T89C51CC02

4126D–CAN–05/03

PCA Interrupt

Figure 43. PCA Interrupt System

PCA Capture Mode

To use one of the PCA modules in capture mode either one or both of the CCAPM bits

CAPN and CAPP for that module must be set. The external CEX input for the module

(on port 1) is sampled for a transition. When a valid transition occurs the PCA hardware

loads the value of the PCA counter registers (CH and CL) into the module’s capture reg-

isters (CCAPnL and CCAPnH). If the CCFn bit for the module in the CCON SFR and the

ECCFn bit in the CCAPMn SFR are set then an interrupt will be generated.

Figure 44. PCA Capture Mode

CCON

0xD8

CCF1

CCF0

Module 1

Module 0

PCA Timer/Counter

To Interrupt

IEN0.6

IEN0.7

ECF

CMOD.0

ECCFn

CCAPMn.0

CEXn

n = 0, 1

PCA Counter

(8-bits)

CCAPnH CCAPnL

CCFn

CCON Reg

PCA

Interrupt

Request

0CAPPnCAPNn000ECCFn

CCAPMn Register (n = 0, 1)

T89C51CC02CA-RATIM Arkusz danych(PDF) 106 Page - ATMEL Corporation