AT89C51CC03C-RLTIM View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

AT89C51CC03C-RLTIM

Enhanced 8-bit MCU with CAN Controller and Flash Memory

Atmel Corporation 

AT89C51CC03

Figure 69. PCA Capture Mode

CEXn

n = 0, 4

PCA Counter

CH CL

(8bits) (8bits)

CCFn

CCON

CCAPnH CCAPnL

PCA

Interrupt

Request

CAPMnECOMn CAPPn CAPNn MATn TOGn PWMn ECCFn

7

0

CCAPMn Register (n = 0, 4)

16-bit Software Timer

Mode

The PCA modules can be used as software timers by setting both the ECOM and MAT

bits in the modules CCAPMn register. The PCA timer will be compared to the module’s

capture registers and when a match occurs an interrupt will occur if the CCFn (CCON

SFR) and the ECCFn (CCAPMn SFR) bits for the module are both set.

Figure 70. PCA 16-bit Software Timer and High Speed Output Mode

PCA Counter

CH

CL

(8 bits) (8 bits)

Compare/Capture Module

CCAPnH CCAPnL

(8 bits)

(8 bits)

Match

16-Bit Comparator

Enable

Toggle

CCFn

CCON reg

CEXn

PCA

Interrupt

Request

“0”

Reset

Write to

CCAPnL

“1”

Write to CCAPnH

CAPMn ECOMn CAPPn

7

0

CAPNn MATn TOGn

CCAPMn Register

(n = 0, 4)

PWMn ECCFn

For software Timer mode, set ECOMn and MATn.

For high speed output mode, set ECOMn, MATn and TOGn.

4182K–CAN–05/06

145

Share Link: