AT89C51RC2-3CSIM datasheet(124/127 Pages) ATMEL

124 / 127 page

Table of Contents

Features ................................................................................................. 1

Description ............................................................................................ 1

Block Diagram ....................................................................................... 3

SFR Mapping ......................................................................................... 4

Pin Configurations ................................................................................ 9

Port Types ........................................................................................... 13

Oscillator ............................................................................................. 14

Registers ............................................................................................................ 14

Functional Block Diagram .................................................................................. 15

Enhanced Features ............................................................................. 16

X2 Feature.......................................................................................................... 16

Dual Data Pointer Register (DPTR) ................................................... 20

Expanded RAM (XRAM) ...................................................................... 23

Registers ............................................................................................................ 25

Timer 2 ................................................................................................. 26

Auto-reload Mode ............................................................................................... 26

Programmable Clock-out Mode.......................................................................... 27

Registers ............................................................................................................ 29

Programmable Counter Array (PCA) ................................................. 31

Registers ............................................................................................................ 33

PCA Capture Mode ............................................................................................ 39

16-bit Software Timer/ Compare Mode .............................................................. 40

High-speed Output Mode ................................................................................... 41

Pulse Width Modulator Mode ............................................................................. 42

PCA Watchdog Timer......................................................................................... 42

Serial I/O Port ...................................................................................... 44

Framing Error Detection ..................................................................................... 44

Automatic Address Recognition ......................................................................... 45

AT89C51RC2-3CSIM Datasheet(PDF) 124 Page - ATMEL Corporation