AT90PWM3B-16MU

The AT90PWM2/2B/3/3B 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 AT90PWM2/2B/3/3B achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. The AT90PWM2/2B/3/3B provides the following features: 8K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512 bytes EEPROM, 512 bytes SRAM, 53 general purpose I/O lines, 32 general purpose working registers, three Power Stage Controllers, two flexible Timer/Counters with compare modes and PWM, one USART with DALI mode, an 11-channel 10-bit ADC with two differential input stage with programmable gain, a 10-bit DAC, a programmable Watchdog Timer with Internal Oscillator, an SPI serial port, an On-chip Debug system and four software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI ports and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or Hardware Reset. The ADC Noise Reduction mode stops the CPU and all I/O modules except ADC, to minimize switching noise during ADC conversions. In Standby mode, the Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consumption. The device is manufactured using Atmel’s high-density nonvolatile memory technology. The Onchip ISP Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core. The boot program can use any interface to download the application program in the application Flash memory. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Read-While-Write operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel AT90PWM2/3 is a powerful microcontroller that provides a highly flexible and cost effective solution to many

Key features

• High Performance, Low Power Atmel AVR 8-bit Microcontroller
• Advanced RISC Architecture – 129 Powerful Instructions - Most Single Clock Cycle Execution - 32x8 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 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)
• In-System Programmable via SPI Port – Internal Calibrated RC Oscillator (8 MHz) – On-chip PLL for fast PWM (32 MHz, 64 MHz) and CPU (16 MHz)
• Operating Voltage: 2.7V - 5.5V
• Extended Operating Temperature: – -40℃ to +105℃