20 MHz 8-bit core in a 14-pin DIP — what it handles
The Microchip PIC16F676-I/P is an 8-bit PIC MCU running at 20 MHz, with 1.75 KB (1K x 14) Flash program memory, 64 bytes of RAM, and 128 bytes of EEPROM. This is a part sized for simple control loops — sensor readout, switch debounce, PWM generation — not for data-logging or communication stacks.
Memory budget — plan the firmware around 1.75 KB
With 1.75 KB of Flash and 64 bytes of RAM, the firmware must be lean. The 128 bytes of EEPROM are useful for calibration constants or configuration that survive power cycles, but there is no room for a bootloader or field-update staging area. The 20 MHz clock yields a 200 ns instruction cycle (4 clocks per instruction on PIC), which is enough for a 10 kHz control loop with the ADC reading one channel per cycle.
Industrial temperature range, through-hole package
The 14-DIP (0.300" body) is through-hole — easy to hand-solder, socket for prototyping, and more tolerant of thermal cycling than a fine-pitch SMD.
Microchip lists this part as Active. For a production BOM, this means no forced redesign cycle from the manufacturer's side.