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:
? Precision Internal Oscillator:- Factory calibrated to ±1%, typical- Software selectable frequency range of 8 MHz to 125 kHz- Software tunable- Two-Speed Start-up mode- External Oscillator fail detect for critical applications- Clock mode switching during operation for power savings
? Software selectable 31 kHz internal oscillator
? Power-Saving Sleep mode
? Wide operating voltage range (2.0V-5.5V)
? Industrial and Extended temperature range? Power-on Reset (POR)
? Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
? Brown-out Reset (BOR) with software control option
? Enhanced Low-Current Watchdog Timer (WDT) with on-chip oscillator (software selectable nominal 268 seconds with full prescaler) with software enable
? Multiplexed Master Clear with pull-up/input pin
? Programmable code protection
? High-Endurance Flash/EEPROM cell:- 100,000 write Flash endurance- 1,000,000 write EEPROM endurance- Flash/Data EEPROM retention: > 40 years

Low-Power Features:
? Standby Current:- <100 nA @ 2.0V, typical
? Operating Current:-11μA @ 32 kHz, 2.0V, typical-220μA @ 4MHz, 2.0V, typical
? Watchdog Timer Current:-1μA @ 2.0V, typical

Peripheral Features:
? 24/35/53 I/O pins with individual direction control
? High current sink/source for direct LED drive
? Analog comparator module with:- Two analog comparators- Programmable on-chip voltage reference (VREF) module- Selectable internal or external reference- Comparator outputs are externally accessible
? Timer0: 8-bit timer/counter with 8-bit programmable prescaler
? Timer1: 16-bit timer/counter with external crystal/clock capability
? Timer2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler
? Capture, Compare, PWM module:- 16-bit Capture/Compare-10-bit PWM
? Addressable Universal Synchronous/Asynchronous Receiver/Transmitter USART/SCI
? Synchronous Serial Port (SSP) with I2C?28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology