ATMEGA128-16AU

MICROCONTROLLER IC

ATMEGA128-16AU – 8-Bit AVR® Microcontroller with 128KB Flash – Microchip Technology

Optimize your embedded designs with the ATMEGA128-16AU microcontroller from Microchip Technology. This high-performance 8-bit AVR® MCU delivers robust processing capabilities at 16MHz, featuring 128KB of programmable Flash memory for complex applications. PCX ensures genuine Microchip components with reliable stock and rapid shipping.

Key Features

8-Bit AVR Core at 16MHz clock speed
128KB Flash + 4KB EEPROM + 4KB SRAM
53 I/O Pins with versatile connectivity (I²C, SPI, UART/USART)
4.5–5.5V Operating Voltage (industrial-grade tolerance)
Integrated Peripherals: PWM, Watchdog Timer, Brown-out Detection
64-TQFP Surface-Mount Package (14x14mm)

Technical Specifications
Built around Microchip’s efficient AVR architecture, this MCU integrates an 8-channel 10-bit ADC and internal oscillator, reducing external component requirements. Operating across -40°C to 85°C, it offers EBI/EMI interfaces for memory expansion. The 64-TQFP package provides compact design flexibility for space-constrained PCB layouts. Download the datasheet from PCXCo.com for full electrical characteristics.

Common Applications

Industrial automation and control systems
Consumer electronics and smart appliances
Embedded IoT gateways and sensor hubs
Automotive accessory modules
Medical monitoring devices

About Microchip Technology
Microchip Technology stands as a global leader in microcontroller and analog semiconductor solutions, renowned for innovation in embedded control systems. With over three decades of industry expertise, their products power mission-critical applications across aerospace, automotive, and industrial sectors.
The company maintains rigorous quality certifications (IATF 16949, ISO 9001) ensuring component reliability under extreme conditions. Microchip’s AVR® series, including the ATmega line, sets benchmarks for low-power performance and code efficiency in 8-bit processing.

About Microcontrollers
Microcontrollers serve as the computational backbone of embedded systems, integrating processors, memory, and I/O peripherals on a single chip. Unlike general-purpose CPUs, MCUs deliver deterministic real-time control with minimal power consumption—critical for battery-operated and remote devices.
Modern microcontrollers like the ATmega128-16AU enable complex functions including sensor data processing, motor control, and communication protocol handling. Their programmable nature allows field upgrades, extending product lifecycles in evolving technological environments.

Packaging Options
Available in industry-standard tray packaging for automated assembly processes. Contact PCX for reel or custom packaging requirements.

Frequently Asked Questions
Q: Is this MCU suitable for battery-powered devices?
A: Yes, its 4.5–5.5V operating range and sleep modes optimize power efficiency.

Q: What development tools support this microcontroller?
A: Compatible with Microchip’s MPLAB® X IDE and AVRDUDE programmers.

Q: Does it include analog-to-digital conversion?
A: Yes, it features an 8-channel 10-bit ADC for sensor interfacing.

Q: Can I replace older ATmega128 variants with this model?
A: The -16AU offers backward compatibility but verify pinouts using our datasheet.

Q: What’s the difference between Flash and EEPROM memory?
A: Flash stores firmware (128KB), while EEPROM (4KB) retains data during power loss