PIC16F1939-I/PT

The PIC16F1939-I/PT from Microchip Technology is an enhanced mid-range 8-bit microcontroller in a 44-pin TQFP package. Featuring 28KB Flash, 1KB RAM, and 256-byte EEPROM, it integrates an LCD driver supporting up to 96 segments and a capacitive mTouch sensing module for touch interface design. The device operates up to 32MHz with an internal oscillator and offers rich peripherals including 3 ECCP and 2 CCP modules, 14-channel 10-bit ADC, EUSART, MI2C, and SPI interfaces. nanoWatt XLP technology ensures ultra-low power consumption.

The PIC16F1939-I/PT uses Microchip’s enhanced mid-range 8-bit architecture with 49 instructions and 16-level hardware stack. The CPU fetches and executes instructions from Flash memory, accessing RAM for data storage and EEPROM for non-volatile data retention. The LCD driver module generates segment and common drive signals for direct LCD glass connection. The mTouch module implements capacitive sensing using a charge-time measurement unit. Multiple timer/PWM modules generate precision timing and motor control signals. The ADC converts analog inputs using successive approximation. Communication peripherals handle serial data exchange via EUSART, SPI, and I2C protocols.

• LCD-based consumer products (thermostats, meters, scales)
• Capacitive touch panel user interfaces
• Industrial control and monitoring instruments
• Home automation and smart home devices
• Battery-powered handheld measurement tools