OP296 datasheet(2/88 Pages) AD

2 / 88 page

ADuC841/ADuC842/ADuC843

Rev. 0 | Page 2 of 88

TABLE OF CONTENTS

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 8

ESD Caution.................................................................................. 8

Pin Configurations and Functional Descriptions ........................ 9

Terminology .................................................................................... 11

ADC Specifications .................................................................... 11

DAC Specifications..................................................................... 11

Typical Performance Characteristics ........................................... 12

Functional Description .................................................................. 16

8052 Instruction Set ................................................................... 16

Other Single-Cycle Core Features ............................................ 18

Memory Organization ............................................................... 19

Special Function Registers (SFRs)............................................ 20

Accumulator SFR (ACC)........................................................... 21

Special Function Register Banks .............................................. 22

ADC Circuit Information.......................................................... 23

Calibrating the ADC .................................................................. 30

Nonvolatile Flash/EE Memory ................................................. 31

Using Flash/EE Data Memory .................................................. 34

User Interface to On-Chip Peripherals.................................... 38

On-Chip PLL............................................................................... 41

Pulse-Width Modulator (PWM).............................................. 42

Serial Peripheral Interface (SPI)............................................... 45

I2C Compatible Interface........................................................... 48

Dual Data Pointer....................................................................... 51

Power Supply Monitor ............................................................... 52

Watchdog Timer......................................................................... 53

Time Interval Counter (TIC).................................................... 54

8052 Compatible On-Chip Peripherals................................... 57

Timer/Counter 0 and 1 Operating Modes.............................. 62

Timer/Counter Operating Modes............................................ 64

UART Serial Interface................................................................ 65

SBUF ............................................................................................ 65

Interrupt System ......................................................................... 70

Hardware Design Considerations ............................................ 72

Other Hardware Considerations.............................................. 76

Development Tools .................................................................... 77

QuickStart Development System ............................................. 77

Timing Specifications, , .................................................................. 78

Outline Dimensions ....................................................................... 86

Ordering Guides......................................................................... 87

REVISION HISTORY

Revision 0: Initial Version

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