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ATMEGA128A – AU Microcontroller – (SMD TQFP Package) – 8-Bit 64 Pin 128K Flash Microcontroller

499.00 Excluding tax

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The ATMEGA128A is a low-power CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATMEGA128A achieves through puts close to 1MIPS per MHz. This empowers system designer to optimize the device for power consumption versus processing speed.


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

• Advanced RISC Architecture

– 133 Powerful Instructions

– Most Single-clock Cycle Execution

–  32 × 8 General Purpose Working Registers + Peripheral Control Registers

–  Fully Static Operation

–  Up to 16MIPS Throughput at 16MHz

– On-chip 2-cycle Multiplier

• 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

• JTAG (IEEE std. 1149.1 Compliant) Interface

– Boundary-scan Capabilities According to the JTAG Standard

– Extensive On-chip Debug Support Atmel-8151

– Programming of Flash, EEPROM, Fuses and Lock Bits through the JTAG Interface

• Atmel QTouch® library support

– Capacitive touch buttons, sliders and wheels

– Atmel QTouch and QMatrix acquisition

– Up to 64 sense channels

• Peripheral Features

– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

– Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode and Capture Mode

– Real Time Counter with Separate Oscillator

– Two 8-bit PWM Channels

– 6 PWM Channels with Programmable Resolution from 2 to 16 Bits

– Output Compare Modulator

– 8-channel, 10-bit ADC

• 8 Single-ended Channels

• 7 Differential Channels

• 2 Differential Channels with Programmable Gain at 1x, 10x, or 200x

– Byte-oriented Two-wire Serial Interface

– Dual Programmable Serial USARTs

– Master/Slave SPI Serial Interface

– Programmable Watchdog Timer with 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

– 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

• I/O and Packages

– 53 Programmable I/O Lines

– 64-lead TQFP and 64-pad QFN/MLF

• Operating Voltages

– 2.7 – 5.5V

• Speed Grades

– 0 – 16MHz


Parameters Values
Pin count 64
Flash (KB) 128
External Memory (KB) 64
General Purpose I/O pins 53
TWI (I2C) 1
8-bit Timer/Counters 2
16-bit Timer/Counters 2
PWM channels 6

* product image for illustration purposes only. actual product may vary.


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