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ATMEGA64A-AU

8-bit AVR MCU, 64KB Flash, 4KB SRAM, 2KB EE, 16MHz, 53 I/O, JTAG, TQFP-64

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Manufacturer Part：

ATMEGA64A-AU

Package：

TQFP-64 (14 x 14 x 1.0mm)

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Description

Product Overview

The ATMEGA64A-AU from Microchip Technology is a high-performance, low-power 8-bit AVR RISC-based microcontroller with 64KB ISP Flash, 2KB EEPROM, and 4KB SRAM in a TQFP-64 package. It operates at up to 16MHz with 2.7V to 5.5V supply, featuring JTAG interface, 8-channel 10-bit ADC, and multiple communication interfaces.

Key Specifications

Flash Memory 64KB
SRAM 4KB
EEPROM 2KB
Clock Speed Up to 16MHz
I/O Pins 53
ADC Channels 8-channel 10-bit
Communication USART, SPI, TWI (I2C)
Timers 2x 8-bit, 2x 16-bit
Supply Voltage 2.7V to 5.5V
Package TQFP-64 (14 x 14mm)
Operating Temperature -40°C to +85°C

Features

  • 131 powerful instructions, most single-clock cycle execution
  • 32 x 8 general purpose working registers
  • Up to 16 MIPS throughput at 16MHz
  • JTAG (IEEE 1149.1) interface for debug and programming
  • 8-channel 10-bit ADC with optional differential input
  • 4 PWM channels
  • Programmable watchdog timer with on-chip oscillator
  • Six software selectable power saving modes
  • QTouch library support for capacitive touch sensing

Applications

  • Industrial control systems
  • Motor control and drive applications
  • Automotive body electronics
  • Consumer electronics
  • Embedded networking

The ATMEGA64A-AU from Microchip Technology is a high-performance, low-power 8-bit AVR RISC microcontroller featuring 64KB of in-system programmable Flash with read-while-write capability, 2KB EEPROM, and 4KB SRAM. It provides 53 programmable I/O lines, a JTAG interface for on-chip debugging and boundary-scan, 8-channel 10-bit ADC, multiple communication interfaces (USART, SPI, TWI), and flexible timer/counters with compare and PWM modes. The device operates from 2.7V to 5.5V at up to 16MHz.

The ATMEGA64A is based on the AVR enhanced RISC architecture with 131 instructions, most executing in a single clock cycle. The CPU core includes an ALU with 32 general-purpose registers directly connected, enabling two independent registers to be accessed in one instruction cycle. Memory is organized with Harvard architecture separating program Flash and data SRAM. The JTAG interface provides on-chip debug capabilities and Flash programming. Six sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) optimize power consumption for different application scenarios.

Pin Name Type Function
1-8 PA0-PA7 I/O Port A: ADC channels / digital I/O
9-16 PB0-PB7 I/O Port B: Timer/PWM/SPI digital I/O
17-24 PC0-PC7 I/O Port C: JTAG/TWI digital I/O
25-32 PD0-PD7 I/O Port D: USART/INT digital I/O
33-40 PE0-PE7 I/O Port E: Timer/INT/TWI digital I/O
41-48 PF0-PF7 I/O Port F: ADC digital I/O
49-56 PG0-PG7 I/O Port G: SPM/OSC digital I/O
57 RESET Input Active-low reset
58 VCC Power Digital supply voltage
59 GND Power Ground
60 AVCC Power ADC supply voltage
61 AREF Reference ADC reference voltage
  • Industrial automation controllers with JTAG debug
  • Motor drive and power management systems
  • Building automation and HVAC controllers
  • Embedded networking gateways
  • Consumer appliance control boards
Manufacturer Part Number Package Notes
Microchip ATMEGA128A-AU TQFP-64 128KB Flash, pin-compatible upgrade
Microchip ATMEGA64A-MU QFN-64 Same specs, QFN package
Microchip ATMEGA644P-20AU TQFP-44 64KB Flash, smaller package
Renesas R5F563NBDDFP TQFP-64 RL78 alternative, 64KB Flash
ST STM32F103C8T6 LQFP-48 ARM Cortex-M3, 64KB Flash
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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