PIC18F25K50-E/SO

Microcontrollers Overview

The PIC18F25K50-E/SO is an 8-bit microcontroller from the PIC18(L)F2xK50 family, manufactured by Microchip Technology. It features a PIC18 core with 32 KB of Flash program memory, 2 KB of SRAM data memory, and 256 bytes of EEPROM. The device supports a maximum clock frequency of 48 MHz and operates within a supply voltage range of 2.3 V to 5.5 V. It includes a 14-channel, 10-bit Analog-to-Digital Converter (ADC), a 5-bit Digital-to-Analog Converter (DAC), and a Fixed Voltage Reference (FVR). Connectivity options include USB 2.0 compliance, Enhanced USART, I2C, and SPI interfaces. The component is housed in a 28-pin SOIC package and is rated for industrial temperature operation from -40°C to +85°C.

Microcontrollers Feature Summary

• Integrated Universal Serial Bus (USB) 2.0 compliant module supporting full-speed and low-speed operations without external crystals.
• Charge Time Measurement Unit (CTMU) enabling capacitive touch sensing applications for screens and switches.
• High-performance 8-bit PIC18 architecture utilizing XLP (eXtreme Low Power) technology for extended battery life.
• Advanced analog peripherals including a 10-bit ADC, 5-bit DAC, and programmable Fixed Voltage Reference.

Microcontrollers Applications

• Battery-powered consumer devices requiring low power consumption and USB connectivity.
• Industrial control systems utilizing RS-485 or LIN/J2602 communication protocols via Enhanced USART.
• Capacitive touch interface implementations using the Charge Time Measurement Unit.
• Data acquisition systems leveraging the 14-channel 10-bit ADC and digital signal processing capabilities.

Microcontrollers Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature grade (-40°C to +85°C) as defined in the official datasheet. Confirm the 'SO' designation corresponds to the 28-lead Small Outline Integrated Circuit package. Ensure compatibility with development tools such as MPLAB IDE and programmers like PICkit or ICD series. Cross-reference the manufacturer part number directly with Microchip documentation to avoid confusion with similar variants in the K50 family.

Microcontrollers Selection Notes

Select this component when a balance of moderate code space, robust analog performance, and native USB connectivity is required. It is suitable for designs needing multiple communication interfaces including I2C, SPI, and UART alongside USB. Consider the 48 MHz operating speed for real-time processing tasks. Evaluate power requirements against the XLP technology benefits if battery operation is critical. Compare pin counts and peripheral sets against other members of the PIC18F2xK50 family to ensure optimal resource utilization.

Microcontrollers Part Context

This microcontroller belongs to the PIC18(L)F2x/45K50 family, which integrates high-performance 8-bit cores with low-power XLP technology. The family emphasizes versatility through built-in USB modules and advanced analog features like CTMU. These devices target cost-sensitive applications demanding reliable communication and precise signal conditioning. The E/SO variant specifically addresses industrial and commercial environments requiring stable operation across wide temperature ranges in surface-mount configurations.

Microcontrollers Replacement Considerations

Direct substitutes within the same package and pinout include other members of the PIC18F2xK50 family, such as the PIC18F24K50 or PIC18F45K50, provided memory sizes meet application needs. Verify that alternative parts maintain identical USB controller functionality and peripheral mappings to minimize software migration efforts.