描述 Description

Specially designed for lamp ballast and motor control applications, this high-performance Microchip 8-bit AVR? RISC-based microcontroller combines 8KB ISP flash memory, 10-channel advanced PWM, 11-channel 10-bit A/D converter, one 10-bit D/A converter, one 12-bit high speed power stage controller (with extended PSC2 features) with 16-bit Resolution Enhancement. The device operates between 2.7-5.5 volts.

特性 Features

·Advanced RISC architecture·131 powerful instructions - most single clock cycle execution
·32 × 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·8Kbytes of in-system programmable program memory flash·Endurance: 10,000 write/erase cycles
·Lock bits protection
·Optional 2/4Kbytes 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·Four bytes page size

·256 Bytes Internal SRAM

·On-chip debug support (debugWIRE)
·Peripheral features·One 12-bit high speed PSC (Power Stage Controllers with extended PSC2 features)·Non overlapping inverted PWM output pins with flexible dead-time
·Variable PWM duty cycle and frequency
·Synchronous update of all PWM registers
· Enhanced resolution mode (16 bits)
·Additional register for ADC synchronization
· Input capture
·Four output pins and output matrix

·One 12-bit high speed PSC (Power Stage Controller)·Auto-stop function for event driven PFC implementation
·Non overlapping inverted PWM output pins with flexible dead-time
·Variable PWM duty cycle and frequency
·Synchronous update of all PWM registers
·Enhanced resolution mode (16 bits)
·Input capture

·One 16-bit simple general purpose timer/counter
·10-bit ADC·Up to 11 single ended channels and one fully differential ADC channel pair
·Programmable gain (5×, 10×, 20×, 40× on differential channel)
·Internal reference voltage

·One 10-bit DAC
·Three analog comparators with·Resistor-array to adjust comparison voltage
·DAC to adjust comparison voltage

·One SPI
·Three 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 (three bytes)
·In-system programmable via SPI port
·Internal low power calibrated RC oscillator (8MHz or 1MHz, low jitter)
·On chip PLL for fast PWM (32MHz, 48MHz, 64MHz) and CPU (12MHz, 16MHz); PLL source RC & XTAL
·Dynamic clock switch
·Temperature sensor

·Operating voltage: 2.7V - 5.5V
·Operating temperature:·-40°C to +105°C or -40°C to +125°C

·Operating speed·5V: 16MHz core, 64MHz PLL
·3.3V: 12MHz core, 48MHz PLL

簡介

AT90PWM81屬于集成電路（IC）的微控制器。由制造生產(chǎn)的AT90PWM81微控制器微控制器產(chǎn)品是相對復(fù)雜的用戶可編程數(shù)字邏輯器件。這些產(chǎn)品與視為微控制器的器件密切相關(guān)，兩者之間的區(qū)別主要體現(xiàn)在制造商選擇的用詞。不過按照傳統(tǒng)，微控制器集成了工作存儲器，也更可能包含混合信號外設(shè)，并且往往與更簡單的軟件范例結(jié)合使用，旨在重復(fù)執(zhí)行一系列預(yù)定義的任務(wù)。