8-bit Microcontroller with 2K/4K Bytes In-System Programmable Flash

ATtiny44A

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

• High Endurance, Non-Volatile Memory Segments

   – 2K/4K Bytes of In-System, Self-Programmable Flash Program Memory

       • Endurance: 10,000 Write/Erase Cycles

   – 128/256 Bytes of In-System Programmable EEPROM

       • Endurance: 100,000 Write/Erase Cycles

   – 128/256 Bytes of Internal SRAM

   – Data retention: 20 years at 85°C / 100 years at 25°C

   – Programming Lock for Self-Programming Flash & EEPROM Data Security

• Peripheral Features

   – One 8-Bit and One 16-Bit Timer/Counter with Two PWM Channels, Each

   – 10-bit ADC

       • 8 Single-Ended Channels

       • 12 Differential ADC Channel Pairs with Programmable Gain (1x / 20x)

   – Programmable Watchdog Timer with Separate On-chip Oscillator

   – On-Chip Analog Comparator

   – Universal Serial Interface

• Special Microcontroller Features

   – debugWIRE On-chip Debug System

   – In-System Programmable via SPI Port

   – Internal and External Interrupt Sources

       • Pin Change Interrupt on 12 Pins

   – Low Power Idle, ADC Noise Reduction, Standby and Power-Down Modes

   – Enhanced Power-on Reset Circuit

   – Programmable Brown-Out Detection Circuit with Software Disable Function

   – Internal Calibrated Oscillator

   – On-Chip Temperature Sensor

• I/O and Packages

   – Available in 20-Pin QFN/MLF/VQFN, 14-Pin SOIC, 14-pin PDIP and 15-ball UFBGA

   – Twelve Programmable I/O Lines

• Operating Voltage:

   – 1.8 – 5.5V

• Speed Grade:

   – 0 – 4 MHz @ 1.8 – 5.5V

   – 0 – 10 MHz @ 2.7 – 5.5V

   – 0 – 20 MHz @ 4.5 – 5.5V

• Industrial Temperature Range: -40°C to +85°C

• Low Power Consumption

   – Active Mode:

       • 210 µA at 1.8V and 1MHz

   –Idle Mode:

       • 33 µA at 1.8V and 1MHz

   – Power-Down Mode:

       • 0.1 µA at 1.8V and 25°C

Pin Configurations

Pinout of ATtiny24A/44A

                                                   PDIP/SOIC

Overview

ATtiny24A/44A are low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny24A/44A achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Block Diagram