ATTINY43U-SU

Overview

The ATtiny43U is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny43U achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
– 120 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
• Non-Volatile Program and Data Memories
– 4K Bytes of In-System Programmable Program Memory Flash
– 64 Bytes of In-System Programmable EEPROM
– 256 Bytes of Internal SRAM
– Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
– Data retention: 20 years at 85°C/ 100 years at 85°C(1)
– Programming Lock for Software Security
• Peripheral Features
– Two 8-Bit Timer/Counters with two PWM Channels, Each
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-Chip Analog Comparator
– 10-bit ADC
4 Single-Ended Channels
– Universal Serial Interface
– Boost Converter
• Special Microcontroller Features
– debugWIRE On-chip Debug System
– In-System Programmable via SPI Port
– External and Internal Interrupt Sources
– Pin Change Interrupt on 16 Pins
– Low Power Idle, ADC Noise Reduction and Power-Down Modes
– Enhanced Power-On Reset Circuit
– Programmable Brown-Out Detection Circuit
– Internal Calibrated Oscillator
– Temperature Sensor On Chip
• I/O and Packages
– Available in 20-Pin SOIC and 20-Pin QFN/MLF
– 16 Programmable I/O Lines
• Operating Voltage:
– 0.7 – 1.8V (via On-Chip Boost Converter)
– 1.8 – 5.5V (Boost Converter Bypassed)
• Speed Grade
– Using On-Chip Boost Converter
0 – 4 MHz
– External Power Supply
0 – 4 MHz @ 1.8 – 5.5V
0 – 8 MHz @ 2.7 – 5.5V
• Low Power Consumption
– Active Mode, 1 MHz System Clock (Without Boost Converter)
400 µA @ 3V
– Power-Down Mode (Without Boost Converter)
150 nA @ 3V