PIC18F43K20T-I/ML

Microcontrollers Overview

The PIC18F43K20T-I/ML is an 8-bit microcontroller from the PIC18F2XK20/4XK20 family, featuring a high-performance RISC CPU with up to 16 MIPS operation. It includes 8 Kbytes of Flash program memory and 512 bytes of SRAM. The device operates within a voltage range of 1.8V to 3.6V and supports clock frequencies up to 64 MHz using an internal oscillator block with PLL. It offers 36 I/O pins, a 10-bit ADC with 14 channels, and peripherals including MSSP, Enhanced EUSART, CCP/ECCP, and four timers.

Microcontrollers Feature Summary

• Incorporates Extreme Low-Power (XLP) technology for significant power reduction during operation through alternate run modes and multiple idle states.
• Features a flexible oscillator structure with a precision 16 MHz internal oscillator block, software-selectable frequencies, and a 4X Phase Lock Loop (PLL).
• Includes an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) supporting RS-485, RS-232, and LIN protocols with auto-wake-up and auto-baud detect.
• Provides an Analog-to-Digital Converter (ADC) module with 10-bit resolution, auto-acquisition capability, and conversion available during Sleep mode.

Microcontrollers Applications

• Battery-powered embedded systems requiring low-power management
• Industrial control applications utilizing LIN bus protocol support
• Motor control designs leveraging Enhanced CCP (ECCP) modules
• Data acquisition systems employing the 10-bit ADC module

Microcontrollers Procurement Notes

Verify the specific suffix 'I/ML' corresponds to the industrial temperature range (-40°C to +85°C) and QFN-44 package as documented in the datasheet. Confirm that the 'T' designation indicates tape and reel packaging if required for automated assembly. Ensure compatibility with existing design constraints regarding the 1.8V to 3.6V operating voltage range and pinout configuration.

Microcontrollers Selection Notes

Select this component when 8 Kbytes of Flash and 512 bytes of RAM are sufficient for the application logic. It is suitable for designs requiring 36 general-purpose I/O pins and 14 analog input channels. Consider this part for cost-sensitive applications needing high computational performance at economical prices while maintaining robust peripheral integration like MSSP and EUSART.

Microcontrollers Part Context

This device belongs to the PIC18F2XK20/4XK20 family, which shares core features such as the C Compiler Optimized Architecture, 8x8 hardware multiplier, and self-programmability under software control. The family differentiates devices primarily by memory size, I/O count, and ADC channel availability, with the PIC18F43K20 representing the entry-level option in the 40/44-pin variant group.

Microcontrollers Replacement Considerations

PIC18F44K20T-I/ML: Offers increased memory capacity while maintaining identical pinouts and peripheral sets.

Microcontrollers FAQ

Does the PIC18F43K20 support in-circuit debugging?

Yes, the device supports In-Circuit Debug (ICD) via two pins, allowing for development and testing without removing the chip from the circuit.

What is the function of the Fail-Safe Clock Monitor?

The Fail-Safe Clock Monitor constantly monitors the main clock source against the LFINTOSC reference. If a clock failure occurs, it switches the controller to the internal oscillator block to allow continued operation or safe shutdown.

Can the ADC perform conversions while the device is in Sleep mode?

Yes, the ADC module allows conversion to be available during Sleep mode, enabling low-power data acquisition applications.