
1
Features
High-performance, Low-power AVR
8-bit Microcontroller
Advanced RISC Architecture
–
133 Powerful Instructions
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Most Single Clock Cycle Execution
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32 x 8 General Purpose Working Registers + Peripheral Control Registers
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Fully Static Operation
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Up to 16 MIPS Throughput at 16 MHz
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On-chip 2-cycle Multiplier
Nonvolatile Program and Data Memories
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128K Bytes of In-System Reprogrammable Flash
Endurance: 1,000 Write/Erase Cycles
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Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
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4K Bytes EEPROM
Endurance: 100,000 Write/Erase Cycles
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4K Bytes Internal SRAM
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Up to 64K Bytes Optional External Memory Space
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Programming Lock for Software Security
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SPI Interface for In-System Programming
JTAG (IEEE std. 1149.1 Compliant) Interface
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Boundary-scan Capabilities According to the JTAG Standard
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Extensive On-chip Debug Support
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Programming of Flash, EEPROM, Fuses and Lock Bits through the JTAG Interface
Peripheral Features
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Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
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Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode and
Capture Mode
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Real Time Counter with Separate Oscillator
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Two 8-bit PWM Channels
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6 PWM Channels with Programmable Resolution from 1 to 16 Bits
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8-channel, 10-bit ADC
8 Single-ended Channels
7 Differential Channels
2 Differential Channels with Programmable Gain (1x, 10x, 200x)
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Byte-oriented 2-wire Serial Interface
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Dual Programmable Serial USARTs
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Master/Slave SPI Serial Interface
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Programmable Watchdog Timer with On-chip Oscillator
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On-chip Analog Comparator
Special Microcontroller Features
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Power-on Reset and Programmable Brown-out Detection
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Internal Calibrated RC Oscillator
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External and Internal Interrupt Sources
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Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby
and Extended Standby
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Software Selectable Clock Frequency
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ATmega103 Compatibility Mode Selected by a Fuse
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Global Pull-up Disable
I/O and Packages
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53 Programmable I/O Lines
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64-lead TQFP
Operating Voltages
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2.7 - 5.5V (ATmega128L)
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4.5 - 5.5V (ATmega128)
Speed Grades
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0 - 8 MHz (ATmega128L)
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0 - 16 MHz (ATmega128)
Rev. 2467AS-08/01
8-bit
Microcontroller
with 128K Bytes
In-System
Programmable
Flash
ATmega128
ATmega128L
Preliminary
Summary
Note: This is a summary document. A complete document is
available on our web site at
www.atmel.com
.