Microchip PIC18LF67K40-I/PT: A Comprehensive Technical Overview

The Microchip PIC18LF67K40-I/PT represents a high-performance, low-power 8-bit microcontroller within Microchip's extensive PIC18 family. Engineered for complex embedded applications requiring a robust set of peripherals, significant memory, and efficient power management, this device is a cornerstone for designers in industrial, automotive, and advanced consumer electronics.

Housed in a 64-pin TQFP package, this MCU is built on an enhanced mid-range architecture with a 16-bit wide instruction set and a 31-level deep hardware stack. A key feature is its extended voltage range (1.8V to 3.6V), which is critical for battery-powered and low-power applications where maintaining operation as the power source depletes is essential. The "LF" designation specifically denotes this low-voltage capability.

At the heart of the device is a core capable of operating at up to 64 MHz, delivering a performance of 16 MIPS. This is supported by a generous memory configuration, including 128 KB of Flash program memory and 3,840 bytes of RAM, providing ample space for sophisticated application code and data handling.

The peripheral set is exceptionally rich, designed to minimize external component count. Key communication interfaces include:

EUSART, SPI, and I2C modules for standard serial communication.

A powerful CAN (Controller Area Network) 2.0B module, making it ideal for automotive and industrial network systems.

mTouch capacitive sensing hardware for implementing touch interfaces without external controllers.

Analog capabilities are comprehensive, featuring a 12-bit Analog-to-Digital Converter (ADC) with up to 35 channels and a 5-bit Digital-to-Analog Converter (DAC). For control applications, it includes PWM (Pulse Width Modulation) outputs and hardware-level CCP (Capture/Compare/PWM) modules.

A significant advancement in this family is the inclusion of Memory Access Partition (MAP), which enhances system security and reliability by allowing the user to configure sections of program memory as protected or to boot from a specific location. Furthermore, its operating temperature range of -40°C to +85°C ensures reliability in harsh environments.

ICGOODFIND: The PIC18LF67K40-I/PT is a highly integrated and versatile 8-bit MCU. Its combination of extensive low-power features, a wide operating voltage, a rich suite of peripherals (including CAN), and robust memory protection mechanisms makes it an exceptional choice for developers designing connected, power-sensitive, and secure embedded systems.

Keywords: Low-Power Management, CAN Module, mTouch Sensing, Memory Access Partition (MAP), Enhanced Mid-Range Core.