AT89C51CC03U-RDTIM datasheet(137/183 Pages) ATMEL

tên linh kiện	AT89C51CC03U-RDTIM

Giải thích chi tiết về linh kiện	Enhanced 8-bit MCU with CAN Controller and Flash Memory

PDF	183 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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137

AT89C51CC03

4182B–CAN–09/03

Figure 65. PCA Capture Mode

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

CEXn

n = 0, 4

PCA Counter

(8bits)

CCAPnH CCAPnL

CCFn

CCON

PCA

Interrupt

Request

0CAPPn CAPNn

000

ECCFn

CCAPMn Register (n = 0, 4)

CCAPnL

(8 bits)

CCAPnH

(8 bits)

ECOMn0 0 MATn TOGn0 ECCFn

CCAPMn Register

(n = 0, 4)

(8 bits)

16-Bit Comparator

Match

Enable

CCFn

CCON reg

PCA

Interrupt

Request

CEXn

Compare/Capture Module

PCA Counter

“0”

“1”

Reset

Write to

CCAPnL

Write to CCAPnH

For software Timer mode, set ECOMn and MATn.

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

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