The microcontroller is a single-chip microcomputer that integrates the main part of the microcomputer on a chip. With the development of technology, microcontrollers have become more and more powerful, which makes their applications ubiquitous and in various fields. For example, motor control, barcode reader/scanner, consumer electronics, gaming equipment, telephone, HVAC, building security and access control, industrial control and automation, and white goods (washing machine, microwave oven), etc.

Microcontroller Features:
? Power-on Reset (POR)
? Power-up Timer (PWRT) andOscillator Start-up Timer (OST)
? Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation
? Programmable code protection
? Power saving SLEEP mode
? Selectable oscillator options?In-Circuit Serial Programming(TM) (ICSP(TM))via two pins

Low-Power Features:
? Low power, high speed CMOS FLASH technology
? Fully static design
? Wide operating voltage range: 2.0V to 5.5V
? High Sink/Source Current: 25 mA
? Industrial temperature range
? Low power consumption: - < 2 mA typical @ 5V, 4 MHz-20 μA typical @ 3V, 32 kHz-< 1 μA typical standby

Peripheral Features:
? Timer0: 8-bit timer/counter with 8-bit prescaler
? Timer1: 16-bit timer/counter with prescaler,can be incremented during SLEEP via external crystal/clock
? Timer2: 8-bit timer/counter with 8-bit periodregister, prescaler and postscaler
? Two Capture, Compare, PWM modules- Capture is 16-bit, max. resolution is 12.5 ns- Compare is 16-bit, max. resolution is 200ns- PWM max. resolution is 10-bit
? 8-bit, up to 8-channel Analog-to-Digital converter
? Synchronous Serial Port (SSP) with SPI(TM)(Master mode) and I2C(TM)(Slave)
? Universal Synchronous Asynchronous Receiver Transmitter (USART/SCI)
? Parallel Slave Port (PSP), 8-bits wide withexternal RD, WR and CS controls (40/44-pin only)
? Brown-out detection circuitry forBrown-out Reset (BOR)