PIC18LF24K40-E/SO

Microcontrollers Overview

The PIC18LF24K40-E/SO is a 28-pin 8-bit microcontroller from the PIC18(L)F2xK40 family, utilizing eXtreme Low-Power (XLP) technology. It features 16 KB of Program Flash Memory, 1 KB of Data SRAM, and 256 Bytes of Data EEPROM. The device operates at clock frequencies up to 64 MHz with an instruction cycle as low as 62.5 ns. It supports an operating voltage range of 1.8V to 3.6V and functions within industrial (-40°C to 85°C) and extended (-40°C to 125°C) temperature ranges. Key peripherals include a 10-bit ADC with Computation (ADC2), a 5-bit DAC, two comparators, and multiple communication interfaces.

Microcontrollers Feature Summary

• Integrates Analog, Core Independent Peripherals, and Communication Peripherals for general-purpose and low-power applications.
• Features a 10-bit ADC with Computation (ADCC) that automates Capacitive Voltage Divider (CVD) techniques for advanced touch sensing and signal processing.
• Includes Core Independent Peripherals such as CWG, WWDT, CRC/Memory Scan, ZCD, and PPS to increase design flexibility and reduce system cost.
• Supports power-saving modes including Doze, Idle, Sleep, and Peripheral Module Disable (PMD) to minimize active power consumption.

Microcontrollers Applications

• General purpose embedded control systems
• Low-power battery-operated devices
• Advanced touch sensing applications using CVD techniques
• Industrial monitoring requiring hardware-based fail-safe operations

Microcontrollers Procurement Notes

Verify the specific ordering suffix 'SO' corresponds to the SOIC-28 package when sourcing components. Confirm the 'E' grade indicates the Extended temperature range capability if required by your application environment. Ensure compatibility with the 1.8V to 3.6V operating voltage range specified for the LF variant. Cross-reference the datasheet revision to ensure all errata and silicon updates are accounted for in your design implementation.

Microcontrollers Selection Notes

Select this component for designs requiring high performance combined with extreme low-power consumption. The inclusion of the ADCC module makes it suitable for capacitive touch interfaces without external processors. Consider the 16 KB flash capacity against application code size requirements. Evaluate the peripheral set, particularly the CWG and ZCD, if driving power stages or AC mains detection is necessary. Compare against the PIC18F24K40 if a wider voltage range up to 5.5V is needed.

Microcontrollers Part Context

This part belongs to the PIC18(L)F24/25K40 family of 28-pin microcontrollers. It shares the core architecture and peripheral set with the PIC18LF25K40, which offers increased memory capacity. The family is characterized by its RISC architecture optimized for C compilers and integrated debugging capabilities. It represents a segment of Microchip's portfolio focused on balancing computational power with energy efficiency for cost-sensitive embedded markets.

Microcontrollers Replacement Considerations

PIC18LF24K40-I/SO: Industrial temperature grade version.

Microcontrollers FAQ

What is the function of the ADC2 module?

The 10-bit ADC with Computation (ADC2) automates Capacitive Voltage Divider (CVD) techniques, performing averaging, filtering, oversampling, and automatic threshold comparisons on input signals.

How does the Peripheral Pin Select (PPS) feature benefit the design?

PPS enables the mapping of digital I/O functions to different pins, providing increased design flexibility during PCB layout and allowing for easier pin reassignment without changing the physical footprint.

What power-saving modes are supported?

The device supports Doze mode (CPU and peripherals running at different rates), Idle mode (CPU halted while peripherals operate), Sleep mode (lowest power consumption), and Peripheral Module Disable (PMD) to selectively disable unused hardware modules.