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.
Features:-
? 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
? 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 Q-Touch and Q-Matrix 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
- On-chip 2-cycle Multiplier
