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ATmega128 64-Pin 16MHz 128kb Microcontroller Datasheet

Photograph
ATMEGA128-16AU - ATmega128 64-Pin 16MHz 128kb 8-bit Microcontroller

Features
  • Utilizes the AVR RISC Architecture
  • High-performance and Low-power 8-bit RISC Architecture
    • - 133 Instructions - Most Single Clock Cycle Execution
    • - 32 x 8 General Purpose Working Registers
    • - Up to 16 MIPS Throughput at 16MHz
    • - Fully Static Operation
    • - On-chip 2-cycle Multiplier
  • Data and Nonvolatile Program Memory
    • - 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
  • JTAG Interface
    • - Boundary-scan Capabilities According to the JTAG Standard
    • - Extensive On-chip Debug Support
    • - Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
  • Peripheral Features
    • - On-chip Analog Comparator
    • - Programmable Watchdog Timer with Separate On-chip Oscillator
    • - Master/Slave SPI Serial Interface
    • - Two 8-bit Timer/Counters with Separate Prescalar, Compare
    • - Two Expanded 16-bit Timer/Counter with Separate Prescaler, Compare and Capture mode
    • - Real Time Counter with Separate 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
  • 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 MLF
  • Operating Voltages
    • - 4.5-5.5V for ATmega128
  • Speed Grades
    • - 0-16MHz for ATmega128

Pin Layout
ATmega128 Pin Layout

Pin Description
Pin Number Description
1 PEN - Programming Enable
2 - 9 PE0-PE7 - Port E
10 - 17 PB0-PB7 - Port B
18 TOSC2/PG3
19 TOSC1/PG4
20 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

Dimensional Drawing
ATmega128 TQFP64 Dimension Drawing