The MDT10F684 is a 14-pin, 8-bit microcontroller that is a direct equivalent to the Microchip PIC16F684. It shares similar features and pinout, making it a suitable replacement in most applications. However, it's still important to double-check both datasheets for exact compatibility.

Datasheet
https://www.mdtmcu.com/upfiles/file/MDT/MDT10F684.pdf

Key Features

🔹 Memory

• Flash: 2K × 14-bit (100,000 write cycles)

• EEPROM: 256 bytes (1 million write cycles)

• SRAM: 128 bytes

🔹 CPU

• High-performance RISC architecture

• Only 35 instructions; most execute in 1 cycle

🔹 I/O Pins (14 total)

• 14 I/O pins total (6 on Port A, 8 on Port C)

• Independent direction control

• High drive strength (can directly drive LEDs)

• Port A supports level-change interrupts and weak pull-ups

🔹 Timers

• Timer0: 8-bit with prescaler

• Timer1: 16-bit with prescaler

• Timer2: 8-bit with period register, prescaler, postscaler

🔹 PWM / Capture / Compare

• 16-bit capture/compare modules (200ns resolution)

• 10-bit PWM with 1, 2, or 4 outputs

• Supports dead-time control

• Max PWM frequency: 20kHz

🔹 ADC

• 8 channels, 10-bit resolution

• Internal voltage references: 2V, 3V, 4V, or VDD

• External reference also supported

🔹 Analog Comparators

• 2 comparators

• Built-in programmable voltage reference (CVREF)

🔹 Clock System

• External clock: up to 20MHz

• Internal 8MHz RC oscillator

• Internal 31kHz low-speed RC oscillator

Power & Other Features

• Low Power:

  • Sleep: ~50nA @ 2.0V

  • Active: ~200μA @ 1MHz, 2.0V

• Voltage Range: 2.0V to 5.5V

• Built-in Features:

  • Power-on Reset (POR)

  • Power-up Timer (PWRT)

  • Oscillator Start-up Timer (OST)

  • Enhanced Low-power Watchdog Timer (WDT)

• Programming:

  • In-circuit serial programming and debugging via PA0 and PA1