T89C51RD2-RDTIL datasheet(28/104 Pages) ATMEL

28 / 104 page

T89C51RD2

4243G–8051–05/03

There are two additional registers associated with each of the PCA modules. They are

CCAPnH and CCAPnL and these are the registers that store the 16-bit count when a

capture occurs or a compare should occur. When a module is used in the PWM mode

these registers are used to control the duty cycle of the output (See Table 14 &

Table 15)

Table 14. CCAPnH: PCA Modules Capture/Compare Registers High

Table 15. CCAPnL: PCA Modules Capture/Compare Registers Low

Table 16. CH: PCA Counter High

Table 17. CL: PCA Counter Low

Watchdog Timer (module 4 only)

CCAPnH

Address

n = 0 - 4

CCAP0H=0FAH

CCAP1H=0FBH

CCAP2H=0FCH

CCAP3H=0FDH

CCAP4H=0FEH

765432

Reset value

CCAPnL

Address

n = 0 - 4

CCAP0L=0EAH

CCAP1L=0EBH

CCAP2L=0ECH

CCAP3L=0EDH

CCAP4L=0EEH

765432

Reset value

Address 0F9H

765432

Reset value

Address 0E9H

765432

Reset value

ECOMn

CAPPn

CAPNn

MATn

TOGn

PWMm

ECCFn

Module Function

T89C51RD2-RDTIL Datasheet(PDF) 28 Page - ATMEL Corporation

T89C51RD2-RDTIL Datasheet(HTML) 28 Page - ATMEL Corporation

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