ATMEGA128A-AU

Product Summary

The ATMEGA128A-AU 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-AU achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. The ATMEGA128A-AU is manufactured using Atmel’s high-density nonvolatile memory technology. The On-chip ISP Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core.

Parametrics

ATMEGA128A-AU absolute maximum ratings: (1)Operating Temperature:-55℃ to +125℃; (2)Storage Temperature:-65℃ to +150℃; (3)Voltage on any Pin except RESET with respect to Ground:-0.5V to VCC+0.5V; (4)Voltage on RESET with respect to Ground:-0.5V to +13.0V; (5)Maximum Operating Voltage:6.0V; (6)DC Current per I/O Pin:40.0 mA; (7)DC Current VCC and GND Pins:200.0mA to 400.0mA.

Features

ATMEGA128A-AU features: (1)133 Powerful Instructions – Most Single Clock Cycle Execution; (2)32 x 8 General Purpose Working Registers + Peripheral Control Registers; (3)Fully Static Operation; (4)Up to 16 MIPS Throughput at 16 MHz; (5)On-chip 2-cycle Multiplier; (6)128K Bytes of In-System Self-programmable Flash program memory; (7)4K Bytes EEPROM; (8)4K Bytes Internal SRAM; (9)Write/Erase cycles: 10,000 Flash/100,000 EEPROM; (10)Data retention: 20 years at 85℃/100 years at 25℃; (11)Optional Boot Code Section with Independent Lock Bits; (12)Up to 64K Bytes Optional External Memory Space; (13)Programming Lock for Software Security; (14)SPI Interface for In-System Programming; (15)Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes; (16)Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode and Capture Mode; (17)Real Time Counter with Separate Oscillator; (18)Two 8-bit PWM Channels; (19)6 PWM Channels with Programmable Resolution from 2 to 16 Bits; (20)Output Compare Modulator; (21)8-channel, 10-bit ADC; (22)Byte-oriented Two-wire Serial Interface; (23)Dual Programmable Serial USARTs; (24)Master/Slave SPI Serial Interface; (25)Programmable Watchdog Timer with On-chip Oscillator; (26)On-chip Analog Comparator; (27)Software Selectable Clock Frequency; (28)ATmega103 Compatibility Mode Selected by a Fuse; (29)Global Pull-up Disable.

Diagrams