PIC 16F628A FLASH-based 8-bit microcontroller

From the shop's description

Features High-Performance RISC CPU – Only 35 single word instructions to learn – All instructions are single cycle (1µs) except for program branches – Operating speed: DC – 20MHz clock input – 2 kBytes Flash Program Memory – 224 Byte RAM Data Memory – 128 Byte EEPROM Data Memory – In-circuit Serial Programming Peripheral Features – Universal Synchronous/Asynchronous Receiver/Transmitter (USART) – Two 8-bit timer/counter(TMR0,TMR2) with 8-bit programmable prescalar – One 16 bit timer/counter – High current source/sink for direct LED drive – Two Analog Comparators – Capture/Compare PWM (CCP) Module – 16 Bytes of common RAM Special Microcontroller Features – Power-On Reset – Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST) – Brown-out Detect (BOD) – Watchdog Timer with separate RC oscillator – Selectable Oscillator Options CMOS Technology – Low power, high speed CMOS FLASH technology – Fully Static Design – Low Power Consumption – < 2mA @ 5V, 4MHz – 15µA typical @ 3V, 32kHz – < 1µA typical standby current I/O and Packages – 15 I/O pins with individual direction control – 18-pin DIP Pin Description Pin Number Description 1 RA2/AN2/Vref – Port A 2 RA3/AN3/CMP1 – Port A 3 RA4/TOCK1/CMP2 – Port A 4 RA5/MCLR/THV – Port A 5 Vss – Ground 6 RB0/INT – Port B 7 RB1/RX/DT – Port B 8 RB2/TX/CK – Port B 9 RB3/CCP1 – Port B 10 RB4/PGM – Port B 11 RB5 – Port B 12 RB6/T1OSO/T1CK1 – Port B 13 RB7/T1OS1 – Port B 14 Vdd – Positive Power Supply 15 RA6/OSC2/CLKOUT – Port A 16 RA7/OSC1/CLKIN – Port A 17 RA0/AN0 – Port A 18 RA1/AN1 – Port A Technical Data Data Sheet Microchip – Data Sheet for PIC16F628A Application Notes Microchip – Application Notes for PIC16F628A