Overview

ATtiny828 is a low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny828 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High Performance, Low Power Atmel® AVR® 8-bit Microcontroller

• Advanced RISC Architecture

• 123 Powerful Instructions – Most Single Clock Cycle Execution

• 32 x 8 General Purpose Working Registers

• Fully Static Operation

• Up to 20 MIPS Throughput at 20 MHz

• Non-volatile Program and Data Memories

• 8K Bytes of In-System Programmable Flash Program Memory

• Endurance: 10,000 Write/Erase Cycles

• 256 Bytes of In-System Programmable EEPROM

• Endurance: 100,000 Write/Erase Cycles

• 512 Bytes Internal SRAM

• Optional Boot Code Section with Independent Lock Bits

• Data Retention: 20 Years at 85oC / 100 Years at 25oC

• Peripheral Features

• One 8-bit and one 16-bit Timer/Counter with Two PWM Channels, Each

• Programmable Ultra Low Power Watchdog Timer

• On-chip Analog Comparator

• 10-bit Analog to Digital Converter

• 28 External and 4 Internal, Single-ended Input Channels

• Full Duplex USART with Start Frame Detection

• Master/Slave SPI Serial Interface

• Slave I2C Serial Interface

• Special Microcontroller Features

• Low Power Idle, ADC Noise Reduction, and Power-down Modes

• Enhanced Power-on Reset Circuit

• Programmable Brown-out Detection Circuit with Supply Voltage Sampling

• External and Internal Interrupt Sources

• Pin Change Interrupt on 28 Pins

• Calibrated 8MHz Oscillator with Temperature Calibration Option

• Calibrated 32kHz Ultra Low Power Oscillator

• High-Current Drive Capability on 8 I/O Pins

• I/O and Packages

• 32-lead TQFP, and 32-pad QFN/MLF: 28 Programmable I/O Lines

• Speed Grade

• 0 – 2 MHz @ 1.7 – 1.8V

• 0 – 4 MHz @ 1.8 – 5.5V

• 0 – 10 MHz @ 2.7 – 5.5V

• 0 – 20 MHz @ 4.5 – 5.5V

• Low Power Consumption

• Active Mode: 0.2 mA at 1.8V and 1MHz

• Idle Mode: 30 µA at 1.8V and 1MHz

• Power-Down Mode (WDT Enabled): 1 µA at 1.8V

• Power-Down Mode (WDT Disabled): 100 nA at 1.8V