Summary

This powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip's powerful PIC® architecture into an 18-pin package and is upwards compatible with the PIC16F628, PIC16C62XA, PIC16C5X and PIC12CXXX devices. The PIC16F628A features 4MHz internal oscillator, 128 bytes of EEPROM data memory, a capture/compare/PWM, a USART, 2 Comparators and a programmable voltage reference that make it ideal for analog/integrated level applications in automotive, industrial, appliances and consumer applications.

Parametrics

• Program Memory Type: Flash
• Program Memory Size (KB): 3.5
• CPU Speed (MIPS/DMIPS): 5
• SRAM (B): 224
• Data EEPROM/HEF (bytes): 128
• Digital Communication Peripherals: 1-UART,
• Capture/Compare/PWM Peripherals: 1 Input Capture, 1 CCP,
• Timers: 2 x 8-bit, 1 x 16-bit
• Number of Comparators: 2
• Temperature Range (°C): -40 to 125
• Operating Voltage Range (V): 2 to 5.5
• Pin Count: 18

Supplier link: Product page

Special note from TRONIC.LK

This particular chip is a nanoWatt technology device which supports LVP (Low voltage programming mode). When you program this chip using a PICKIT2, etc..., if you find it is not detected, it could probably be that it tried to program in LVP mode. It is recommended to connect PGM (RB4) pin to ground via a 100k resistor while programming.

See page 13 of the document below.

PIC16F627A/628A/648A EEPROM Memory Programming Specification

More information could be found in the link below.

https://www.electro-tech-online.com/threads/programming-pic16f628a-using-pickit2.23735/