Analog Devices ADuC812 User Manual

Aduc812, Microconverter, Multichannel 12-bit adc with embedded flash mcu

Table of contents

Document Outline

FEATURES
GENERAL DESCRIPTION
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
ORDERING GUIDE
PIN FUNCTION DESCRIPTIONS
TERMINOLOGY
ADC SPECIFICATIONS
- Integral Nonlinearity
- Differential Nonlinearity
- Offset Error
- Full-Scale Error
- Signal to (Noise + Distortion) Ratio
- Total Harmonic Distortion
DAC SPECIFICATIONS
- Relative Accuracy
- Voltage Output Settling Time
- Digital-To-Analog Glitch Impulse
ARCHITECTURE, MAIN FEATURES
MEMORY ORGANIZATION
OVERVIEW OF MCU-RELATED SFRs
- Accumulator SFR
- B SFR
- Stack Pointer SFR
- Data Pointer
- Program Status Word SFR
- Power Control SFR
SPECIAL FUNCTION REGISTERS
ADC CIRCUIT INFORMATION
- General Overview
- ADC Transfer Function
- Typical Operation
- ADCCON1 — (ADC Control SFR #1)
- ADCCON2 — (ADC Control SFR #2)
- ADCCON3 — (ADC Control SFR #3)
- Driving the A/D Converter
- Voltage Reference Connections
- Configuring the ADC
- ADC DMA Mode
- Micro Operation During the ADC DMA Mode
- The Offset and Gain Calibration Coefficients
- Calibration
NONVOLATILE FLASH MEMORY
- Flash Memory Overview
- Flash/EE Memory and the ADuC812
- ADuC812 Flash/EE Memory Reliability
- Using the Flash/EE Program Memory
  - Serial Downloading (In-Circuit Programming)
  - Parallel Programming
- Using the Flash/EE Data Memory
- ECON–Flash/EE Memory Control SFR
- Flash/EE Memory Timing
- Using the Flash/EE Memory Interface
- Erase-All
- Program a Byte
USER INTERFACE TO OTHER ON-CHIP ADuC812 PERIPHERALS
- Using the D/A Converter
WATCHDOG TIMER
POWER SUPPLY MONITOR
SERIAL PERIPHERAL INTERFACE
- MISO (Master In, Slave Out Data I/O Pin), Pin #19
- MOSI (Master Out, Slave In Pin), Pin #27
- SCLOCK (Serial Clock I/O Pin), Pin #26
- SS (Slave Select Input Pin), Pin #12
- Using the SPI Interface
- SPI Interface — Master Mode
- SPI Interface — Slave Mode
I2C COMPATIBLE INTERFACE
8051-COMPATIBLE ON-CHIP PERIPHERALS
- Parallel I/O Ports 0–3
- Timers/Counters
- Timer/Counter 0 and 1 Data Registers
- TH0 and TL0
- TH1 and TL1
TIMER/COUNTER 0 AND 1 OPERATING MODES
- Mode 0 (13-Bit Timer/Counter)
- Mode 1 (16-Bit Timer/Counter)
- Mode 2 (8-Bit Timer/Counter with Auto Reload)
- Mode 3 (Two 8-Bit Timer/Counters)
- Timer/Counter 2 Data Registers
- TH2 and TL2
- RCAP2H and RCAP2L
- Timer/Counter Operation Modes
- 16-Bit Autoreload Mode
- 16-Bit Capture Mode
UART SERIAL INTERFACE
- Mode 0: 8-Bit Shift Register Mode
- Mode 1: 8-Bit UART, Variable Baud Rate
- Mode 2: 9-Bit UART with Fixed Baud Rate
- Mode 3: 9-Bit UART with Variable Baud Rate
- UART Serial Port Baud Rate Generation
- Timer 1 Generated Baud Rates
- Timer 2 Generated Baud Rates
INTERRUPT SYSTEM
- Interrupt Priority
- Interrupt Vectors
ADuC812 HARDWARE DESIGN CONSIDERATIONS
- Clock Oscillator
- External Memory Interface
- Power-On Reset Operation
- Power Supplies
- Power Consumption
- Power-Saving Modes
- Grounding and Board Layout Recommendations
OTHER HARDWARE CONSIDERATIONS
- In-Circuit Serial Download Access
- Embedded Serial Port Debugger
- Single-Pin Emulation Mode
- Enhanced-Hooks Emulation Mode
- Typical System Configuration
QUICKSTART DEVELOPMENT SYSTEM
- Download – In-Circuit Serial Downloader
- DeBug – In-Circuit Debugger
- ADSIM – Windows Simulator
TIMING SPECIFICATIONS
OUTLINE DIMENSIONS
Revision History