PIC18F45J50T-I/ML

Microcontrollers Overview

The PIC18F45J50T-I/ML is an 8-bit microcontroller from the PIC18(L)F4xJ50 family, featuring a PIC18 core and nanoWatt XLP technology. It provides 32 KB of Flash program memory and 3776 bytes of SRAM in a 44-pin QFN package. The device supports USB V2.0 Full Speed (12 Mbps) and Low Speed (1.5 Mbps) communication with crystal-less operation. Operating voltage ranges from 2.0V to 3.6V, with a maximum clock frequency of 48 MHz. It includes a 10-bit ADC with up to 13 channels, two Enhanced USARTs, two MSSP modules, and Peripheral Pin Select.

Microcontrollers Feature Summary

• Integrates a fully featured USB module compliant with USB Specification Revision 2.0, supporting control, interrupt, isochronous, and bulk transfers with up to 32 endpoints.
• Incorporates nanoWatt XLP technology for extreme low-power consumption, offering Deep Sleep mode with currents down to 13 nA and multiple idle modes.
• Features a high-precision internal oscillator optimized for USB applications, enabling crystal-less full-speed and low-speed operation.
• Includes a Charge Time Measurement Unit (CTMU) that supports capacitive touch sensing for touch screens and capacitive switches.

Microcontrollers Applications

• USB-enabled embedded systems requiring low power consumption
• Capacitive touch sensing interfaces using CTMU
• Real-time clock and calendar applications utilizing hardware RTCC
• Industrial control systems requiring flexible peripheral pin mapping

Microcontrollers Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging when sourcing components. Confirm the '-I' temperature grade corresponds to industrial specifications (-40°C to +85°C). Ensure compatibility with the 44-pin QFN footprint during PCB layout. Check for any applicable errata sheets regarding operational differences or silicon revisions before finalizing procurement.

Microcontrollers Selection Notes

Select this component for designs requiring integrated USB connectivity without external transceivers. Consider the 32 KB Flash size for moderate application code requirements. Evaluate the 44-pin QFN package constraints against available board space. Compare power consumption profiles across different operating modes if battery life is critical. Verify peripheral availability matches interface needs such as EUSART and MSSP.

Microcontrollers Part Context

This device belongs to the PIC18(L)F4xJ50 family, which shares a consistent pinout and peripheral set across varying memory sizes. It is pin-compatible with other PIC18 families like the PIC18F4550 and PIC18F2450, facilitating migration paths. The family emphasizes cost-effective high-performance solutions with robust code protection features and extensive development tool support.

Microcontrollers Replacement Considerations

PIC18F45J50-I/ML

Microcontrollers FAQ

Does the PIC18F45J50 require an external crystal for USB operation?

No, the device supports crystal-less full-speed and low-speed USB operation using its high-precision internal oscillator.

What is the purpose of the CTMU module in this microcontroller?

The Charge Time Measurement Unit supports capacitive touch sensing for touch screens and capacitive switches, and provides precise time measurement for flow or temperature sensing.