Features
• High Performance, Low Power Atmel
®
AVR
®
8-bit Microcontroller
• Advanced RISC Architecture
– 129 Powerful Instructions - Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 1 MIPS throughput per MHz
– On-chip 2-cycle Multiplier
• Data and Non-Volatile Program Memory
– 8K Bytes Flash of In-System Programmable Program Memory
• Endurance: 10,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation
– 512 Bytes of In-System Programmable EEPROM
• Endurance: 100,000 Write/Erase Cycles
– 512 Bytes Internal SRAM
– Programming Lock for Flash Program and EEPROM Data Security
• On Chip Debug Interface (debugWIRE)
• Peripheral Features
– Two or three 12-bit High Speed PSC (Power Stage Controllers) with 4-bit
Resolution Enhancement
• Non Overlapping Inverted PWM Output Pins With Flexible Dead-Time
• Variable PWM duty Cycle and Frequency
• Synchronous Update of all PWM Registers
• Auto Stop Function for Event Driven PFC Implementation
• Less than 25 Hz Step Width at 150 kHz Output Frequency
• PSC2 with four Output Pins and Output Matrix
– One 8-bit General purpose Timer/Counter with Separate Prescaler and Capture
Mode
– One 16-bit General purpose Timer/Counter with Separate Prescaler, Compare
Mode and Capture Mode
– Programmable Serial USART
• Standard UART mode
• 16/17 bit Biphase Mode for DALI Communications
– Master/Slave SPI Serial Interface
– 10-bit ADC
• Up To 11 Single Ended Channels and 2 Fully Differential ADC Channel Pairs
• Programmable Gain (5x, 10x, 20x, 40x on Differential Channels)
• Internal Reference Voltage
– 10-bit DAC
– Two or three Analog Comparator with Resistor-Array to Adjust Comparison
Voltage
– 4 External Interrupts
– Programmable Watchdog Timer with Separate On-Chip Oscillator
• Special Microcontroller Features
– Low Power Idle, Noise Reduction, and Power Down Modes
– Power On Reset and Programmable Brown Out Detection
– Flag Array in Bit-programmable I/O Space (4 bytes)
4317KS–AVR–03/2013
8-bit Atmel
Microcontroller
with 8K Bytes
In-System
Programmable
Flash
AT90PWM2
AT90PWM3
AT90PWM2B
AT90PWM3B
Summary
