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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