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Out Of Stock! ATMEGA128A-AU


Atmel®AVR®ATmega128A is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC (Reduced Instruction Set Computing) Architecture. 133 Powerful Instructions – Most Single Clock Cycle Execution; achieves throughputs approaching 1MIPS per MHz, allowing the system designers' to optimize power consumption versus processing speed.

It provides 128 Kbytes of In-System Programmable Flash with Read-While-Write capabilities, 4 Kbytes EEPROM, 4 Kbytes SRAM, 53 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), four flexible Timer/Counters with compare modes and PWM, 2 USARTs, a byte oriented Two-wire Serial Interface, an 8-channel, 10-bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system and programming and six software selectable power saving modes. 

High Endurance Non-volatile Memory segments

  • 128Kbytes of In-System Self-programmable Flash program memory
  • 4Kbytes EEPROM
  • 4Kbytes Internal SRAM
  • Write/Erase cycles: 10,000 Flash/100,000 EEPROM
  • Data retention: 20 years at 85°C/100 years at 25°C(1)
  • Optional Boot Code Section with Independent Lock Bits

          In-System Programming by On-chip Boot Program

          True Read-While-Write Operation

  • Up to 64 Kbytes Optional External Memory Space
  • Programming Lock for Software Security
  • SPI Interface for In-System Programming


Special Microcontroller Features

  • Power-on Reset and Programmable Brown-out Detection
  • Internal Calibrated RC Oscillator
  • External and Internal Interrupt Sources
  • Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
  • Software Selectable Clock Frequency
  • ATmega103 Compatibility Mode Selected by a Fuse
  • Global Pull-up Disable



  • Controller Family/Series: AVR MEGA
  • Core Size: 8bit
  • No. of I/O's: 53
  • Program Memory Size: 128 KB
  • EEPROM Memory Size: 4KB
  • RAM Memory Size: 4KB
  • CPU Speed: 16MHz
  • Oscillator Type: External, Internal
  • No. of Timers: 4
  • Peripherals: ADC, Comparator, PWM, RTC, Timer
  • Embedded Interface Type: JTAG, SPI, USART
  • Digital IC Case Style: TQFP
  • Supply Voltage Range: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • No. of Pins: 64
  • SVHC: No SVHC (18-Jun-2012)
  •  Base Number: megaAVR
  • Clock Frequency: 16MHz
  •  Device Marking: ATMEGA128A-AU
  • Flash Memory Size: 128KB
  • IC Generic Number: 128
  • Interface: JTAG, Serial, SPI, USART, 2-Wire
  • Interface: JTAG, SPI, USART
  • Interface Type: USART, SPI
  • Logic Function Number: 128
  • No. of ADC Inputs: 8
  • No. of I/O's: 53
  • Package / Case: TQFP
  • Program Memory Size: 128KB
  • Supply Voltage Max: 5.5V
  • Supply Voltage Min: 2.7V
  • Termination Type: SMD 

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  • Views: 1820
  • Product Code: ATMEGA128A-AU
  • Availability: Out Of Stock!
  • Rs300.00

Tags: atmega128a-au, atmega, 128a, pu, microcontrollers, atmel, avr, semiconductor

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