ATMEGA128A-AU
| Parameters | |
|---|---|
| Oscillator Type | Internal |
| Core Processor | AVR |
| RAM Size | 4K x 8 |
| Number of I/O | 53 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| EEPROM Size | 4K x 8 |
| Program Memory Type | FLASH |
| Connectivity | EBI/EMI, I²C, SPI, UART/USART |
| Core Size | 8-Bit |
| Program Memory Size | 128KB (64K x 16) |
| Data Converters | A/D 8x10b |
| Package | Tray |
| Product Status | Active |
| Base Product Number | ATMEGA128 |
| REACH Status | REACH Unaffected |
| Standard Package | 90 |
| ECCN | EAR99 |
| HTSUS | 8542.31.0001 |
| Series | AVR® ATmega |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 64-TQFP |
| Mfr | Microchip Technology |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 64-TQFP (14x14) |
| Speed | 16MHz |
ATMEGA128A-AU Chip Microcontroller IC 8-Bit 16MHz 128KB FLASH
The ATMEGA128A-AU is a high-performance 8-bit microcontroller (MCU) manufactured by Microchip Technology (formerly ATMEL), based on the advanced AVR RISC architecture. Packaged in a compact 64-pin TQFP, it operates at a maximum clock frequency of 16MHz, delivering up to 16 MIPS, with a wide supply voltage range of 2.7V to 5.5V and an operating temperature range of -40℃ to +85℃. It integrates 128KB of in-system programmable Flash (10,000 write/erase cycles), 4KB of EEPROM (100,000 write/erase cycles), 4KB of internal SRAM, 53 programmable I/O pins, and rich peripherals including 8-channel 10-bit ADC, 8 PWM channels, 2 USARTs, 1 SPI interface, 1 I2C interface, 4 timers/counters, and a JTAG interface for debugging and programming, along with multiple low-power sleep modes and comprehensive protection features to ensure stable operation.
This MCU is widely applied in various embedded systems, mainly including:
● Industrial automation (motor drives, PLCs, access control systems)
● Automotive auxiliary systems (vehicle management, remote controls)
● Consumer electronics (smart home devices, voice recognition systems)
● Metering equipment (electric meters)
● Wearable devices, and Arduino DIY projects
Alternative MCU models
● ATMEGA128-16AU (Microchip), pin-compatible with ATMEGA128A-AU, featuring 16MHz clock, 128KB Flash, 4KB SRAM/EEPROM,
● GD32F103C8T6 (GigaDevice), a 32-bit Cortex-M3 MCU with 64KB Flash, 20KB SRAM, pin-compatible in partial applications
● PIC18F4550 (Microchip), an 8-bit MCU with USB interface, 32KB Flash, 2KB SRAM
● STM8S103F3P6 (STMicroelectronics), an 8-bit STM8 MCU with 8KB Flash, 1KB SRAM
