ADUC814BRU View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADUC814BRU

MicroConverter®, Small Package 12-Bit ADC with Embedded Flash MCU

Analog Devices 

ADuC814

TABLE OF CONTENTS

Specifications..................................................................................... 4

Absolute Maximum Ratings............................................................ 9

ESD Caution.................................................................................. 9

Pin Configuration and Function Description ............................ 10

Terminology .................................................................................... 12

ADC Specifications .................................................................... 12

DAC Specifications..................................................................... 12

Typical Performance Curves ......................................................... 13

ADuC814 Architecture, Main Features ....................................... 16

Memory Organization ............................................................... 17

Overview of MCU-Related SFRs.............................................. 18

Accumulator SFR ................................................................... 18

B SFR........................................................................................ 18

Stack Pointer SFR ................................................................... 18

Data Pointer ............................................................................ 18

Program Status Word SFR..................................................... 18

Power Control SFR................................................................. 19

Special Function Registers ........................................................ 20

ADC Circuit Information.............................................................. 21

General Overview....................................................................... 21

ADC Transfer Function............................................................. 21

ADC Data Output Format .................................................... 21

SFR Interface to ADC Block ..................................................... 22

ADCCON1 (ADC Control SFR 1) .......................................... 22

ADCCON2 (ADC Control SFR 2) .......................................... 23

ADCCON3 (ADC Control SFR 3) .......................................... 24

Driving the ADC............................................................................. 25

Voltage Reference Connections................................................ 26

Configuring the ADC ................................................................ 26

Initiating ADC Conversions ..................................................... 27

ADC High Speed Data Capture Mode .................................... 27

ADC Offset and Gain Calibration Overview ......................... 28

ADC Offset and Gain Calibration Coefficients ..................... 28

Calibrating the ADC .................................................................. 29

Initiating Calibration in Code .................................................. 29

Nonvolitile Flash/EE Memory ...................................................... 30

Flash/EE Memory Overview .................................................... 30

Flash/EE Memory and the ADuC814...................................... 30

ADuC814 Flash/EE Memory Reliability................................. 30

Using Flash/EE Program Memory........................................... 31

Serial Downloading (In-Circuit Programming)................ 31

Parallel Programming............................................................ 31

Flash/EE Program Memory Security....................................... 31

Lock Mode .............................................................................. 31

Secure Mode ........................................................................... 31

Serial Safe Mode ..................................................................... 31

Using Flash/EE Data Memory.................................................. 32

ECON—Flash/EE Memory Control SFR ........................... 32

Flash/EE Memory Timing ........................................................ 33

Using the Flash/EE Memory Interface ................................ 33

Programming a Byte .............................................................. 33

User Interface to Other On-Chip ADuC814 Peripherals.......... 34

DACs ............................................................................................ 34

Using the DACs ...................................................................... 35

On-Chip PLL .............................................................................. 37

Time Interval Counter (TIC).................................................... 38

Watchdog Timer......................................................................... 41

Power Supply Monitor ............................................................... 42

ADuC814 Configuration Register (CFG814) ........................ 43

Serial Peripheral Interface..................................................... 43

External Clock ........................................................................ 43

Rev. A | Page 2 of 72

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