Rainbow Electronics ATtiny2313 User Manual

Features, Pin configurations

Table of contents

Document Outline

Features
Pin Configurations
Overview
- Block Diagram
- Pin Descriptions
About Code Examples
Disclaimer
AVR CPU Core
- Introduction
- Architectual Overview
- ALU – Arithmetic Logic Unit
- Status Register
- General Purpose Register File
  - The X-register, Y-register, and Z-register
- Stack Pointer
- Instruction Execution Timing
- Reset and Interrupt Handling
  - Interrupt Response Time
AVR ATtiny2313 Memories
- In-System Reprogrammable Flash Program Memory
- SRAM Data Memory
  - Data Memory Access Times
- EEPROM Data Memory
- I/O Memory
System Clock and Clock Options
- Clock Systems and their Distribution
- Clock Sources
- Default Clock Source
- Crystal Oscillator
- Calibrated Internal RC Oscillator
  - Oscillator Calibration Register – OSCCAL
- External Clock
- 128 kHz Internal Oscillator
  - Clock Prescale Register – CLKPR
Power Management and Sleep Modes
- MCU Control Register – MCUCR
- Idle Mode
- Power-down Mode
- Standby Mode
- Minimizing Power Consumption
System Control and Reset
- Resetting the AVR
- Reset Sources
- Power-on Reset
- External Reset
- Brown-out Detection
- Watchdog Reset
- MCU Status Register – MCUSR
- Internal Voltage Reference
  - Voltage Reference Enable Signals and Start-up Time
- Watchdog Timer
  - Watchdog Timer Control Register – WDTCR
- Timed Sequences for Changing the Configuration of the Watchdog Timer
  - Safety Level 1
  - Safety Level 2
Interrupts
- Interrupt Vectors in ATtiny2313
I/O-Ports
- Introduction
- Ports as General Digital I/O
- Alternate Port Functions
- Register Description for I/O-Ports
External Interrupts
- MCU Control Register – MCUCR
- General Interrupt Mask Register – GIMSK
- External Interrupt Flag Register – EIFR
- Pin Change Mask Register – PCMSK
8-bit Timer/Counter0 with PWM
- Overview
  - Registers
  - Definitions
- Timer/Counter Clock Sources
- Counter Unit
- Output Compare Unit
- Compare Match Output Unit
  - Compare Output Mode and Waveform Generation
- Modes of Operation
- Timer/Counter Timing Diagrams
- 8-bit Timer/Counter Register Description
Timer/Counter0 and Timer/Counter1 Prescalers
- Internal Clock Source
- Prescaler Reset
- External Clock Source
- General Timer/Counter Control Register – GTCCR
16-bit Timer/Counter1
- Overview
- Accessing 16-bit Registers
  - Reusing the Temporary High Byte Register
- Timer/Counter Clock Sources
- Counter Unit
- Input Capture Unit
- Output Compare Units
- Compare Match Output Unit
  - Compare Output Mode and Waveform Generation
- Modes of Operation
- Timer/Counter Timing Diagrams
- 16-bit Timer/Counter Register Description
USART
- Overview
  - AVR USART vs. AVR UART – Compatibility
- Clock Generation
- Frame Formats
  - Parity Bit Calculation
- USART Initialization
- Data Transmission – The USART Transmitter
- Data Reception – The USART Receiver
- Asynchronous Data Reception
- Multi-processor Communication Mode
  - Using MPCM
- USART Register Description
- Examples of Baud Rate Setting
Universal Serial Interface – USI
- Overview
- Functional Descriptions
- Alternative USI Usage
- USI Register Descriptions
Analog Comparator
- Analog Comparator Control and Status Register – ACSR
- Digital Input Disable Register – DIDR
debugWIRE On-chip Debug System
- Features
- Overview
- Physical Interface
- Software Break Points
- Limitations of debugWIRE
- debugWIRE Related Register in I/O Memory
  - debugWire Data Register – DWDR
Self-Programming the Flash
- Performing Page Erase by SPM
- Filling the Temporary Buffer (Page Loading)
- Performing a Page Write
- Addressing the Flash During Self- Programming
Memory Programming
- Program And Data Memory Lock Bits
- Fuse Bits
  - Latching of Fuses
- Signature Bytes
- Calibration Byte
- Parallel Programming Parameters, Pin Mapping, and Commands
  - Signal Names
- Serial Programming Pin Mapping
- Parallel Programming
- Serial Downloading
Electrical Characteristics
- Absolute Maximum Ratings*
- External Clock Drive Waveforms
- External Clock Drive
ATtiny2313 Typical Characteristics – Preliminary Data
- Active Supply Current
- Idle Supply Current
- Power-down Supply Current
- Pin Pull-up
- Pin Thresholds and hysteresis
- BOD Thresholds and Analog Comparator Offset
- Current Consumption of Peripheral Units
- Current Consumption in Reset and Reset Pulsewidth
Register Summary
Instruction Set Summary
Ordering Information(1)
Packaging Information
- 20P3
- 20S
- 32M1-A
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