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
