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ATMEGA8A-PU Atmel 8 Bit 8K AVR Microcontroller


140 in stock

SKU: IC-ATMEGA8A-PU Category: Brand: .


The ATmega8A is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8A achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed.


  • High-performance, Low-power AVR® 8-bit Microcontroller

    • Advanced RISC Architecture

    • 130 Powerful Instructions – Most Single-clock Cycle Execution

    • 32 x 8 General Purpose Working Registers

    • Fully Static Operation

    • Up to 16 MIPS Throughput at 16 MHz

    • On-chip 2-cycle Multiplier

  • High Endurance Non-volatile Memory segments

    • 8K Bytes of In-System Self-programmable Flash program memory

    • 512 Bytes EEPROM

    • 1K Byte Internal SRAM

    • Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

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

    • Optional Boot Code Section with Independent Lock Bits

      • In-System Programming by On-chip Boot Program

      • True Read-While-Write Operation

    • Programming Lock for Software Security

  • Peripheral Features

    • Two 8-bit Timer/Counters with Separate Prescaler, one Compare Mode

    • One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode

    • Real Time Counter with Separate Oscillator

    • Three PWM Channels

    • 8-channel ADC in TQFP and QFN/MLF package

      • Eight Channels 10-bit Accuracy

    • 6-channel ADC in PDIP package

      • Six Channels 10-bit Accuracy

    • Byte-oriented Two-wire Serial Interface

    • Programmable Serial USART

    • Master/Slave SPI Serial Interface

    • Programmable Watchdog Timer with Separate On-chip Oscillator

    • On-chip Analog Comparator

  • Special Microcontroller Features

    • Power-on Reset and Programmable Brown-out Detection

    • Internal Calibrated RC Oscillator

    • External and Internal Interrupt Sources

    • Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and Standby

  • I/O and Packages

    • 23 Programmable I/O Lines

    • 28-lead PDIP

  • Operating Voltages

    • 2.7 – 5.5V

  • Speed Grades
    • 0 – 16 MHz

  • Power Consumption at 4 Mhz, 3V, 25°C
    • Active: 3.6 mA

    • Idle Mode: 1.0 mA

    • Power-down Mode: 0.5 μA

Flash: 8 KBytes
EEPROM: 512 Bytes
SRAM: 1024 Bytes
Max I/O Pins: 23
Frequency Max: 16 MHz
VCC: 2.7-5.5
10-bit A/D Channels: 6
Analog Comparator: Yes
16-bit Timers: 1
8-bit Timer: 2
Brown Out Detector: Yes
Ext Interrupts: 2
Hardware Multiplier: Yes
Interrupts: 18
ISP: Yes
On Chip Oscillator: Yes
PWM Channels: 3
RTC: Yes
Self Program Memory: Yes
SPI: 1
TWI: Yes
Watchdog: Yes
Package: Lead Free PDIP 28




Number of Pins/Conductors


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I/O Pins



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