Atmel

ATMega128 - 8 bit AVR Microcontroller with 128k Bytes In-System Programmable Flash

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Features High-performance, Low-power AVR 8-bit Microcontroller Advanced RISC Architecture - 133 Powerful Instructions - Most Single Clock Cycle Execution - 32 x 8 General Purpose Working Registers + Peripheral Control Resister - Up to 16 MIPS Throughput at 16MHz - Fully Static Operation - On-chip 2-cycle Multiplier Non-volatile Program and Data Memories - 128k Bytes of In-System Self-Programmable Flash - Optional Boot Code Section with Independent Lock Bits - 4K Bytes EEPROM - 4K Bytes Internal SRAM - Programming Lock for Software Security - Up to 64K Bytes Optional External Memory Space - 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 - Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAGS Interface Peripheral Features - On-chip Analog Comparator - Programmable Watchdog Timer with Seperate On-chip Oscillator - Master/Slave SPI Serial Interface - Two 8-bit Timer/Counters with Separate Prescalar, Compare - Two Expanded 16-bit TImer/Counters with Seperate Prescaler, Compare and Capture mode - Real Time Counter with Seperate Oscillator - Six PWM Channels with Programmable Resolution from 1 to 16 Bits - Dual Programmable Serial USARTs - 8-channel, 10-bit ADC - Byte-oriented Two-wire Serial Interface - Four PWM Channels - Dual Programmable Serial USARTs Special Mircocontroller 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 MLF Operating Voltages - 4.5-5.5V for ATmega128 Speed Grades - 0-16 MHz for ATmega128

Pin Description Pin Number Description 1 PEN - Ground 2-9 PE0 - PE7 - Port E 10-17 PB0 - PB7 - Port B 18 TOSC2/PG3 19 TOSC1/PG4 20 RESET - Reset 21 VCC - Positive Power Supply 22 GND - Ground 23 XTAL2 - Crystal 24 XTAL1 - Crystal 25-32 PD0 - PD7 - Port D 33 PG0 (WR) 34 PG1 (RD) 35-42 PC0 - PC7 - Port C 43 PG2 (ALE) 44-51 PA7 - PA0 - Port A 52 VCC - Positive Power Supply 53 GND - Ground 54-61 PF7 - PF0 - Port F 62 AREF - Analog Reference 63 GND - Ground 64 AVCC - Analog Power Supply

Pin Layout Dimensional Drawing

Technical Data Data Sheet Atmel - Data Sheet for ATMega128/128L Application Notes Atmel - AVR Application Notes