PIC12LF1840T39A-I/ST

RF Transmitter Overview

The PIC12LF1840T39A-I/ST is an 8-bit Flash microcontroller from Microchip Technology's PIC12 family, housed in a 14-TSSOP surface-mount package. It integrates a low-power RF transmitter supporting FSK and OOK modulation across 310MHz, 433MHz, 868MHz, and 915MHz frequencies. The device features 7 kB of Flash program memory, 256 bytes of RAM, and a 10-bit ADC. Operating on a supply voltage of 1.8V to 3.6V, it delivers up to 10dBm output power with a maximum data rate of 100kbps and a transmission current of 16.5mA. The unit supports a maximum clock frequency of 32 MHz and functions within a temperature range of -40°C to +85°C.

RF Transmitter Feature Summary

• Integrated low-power RF transmitter with programmable frequency selection for sub-GHz ISM bands
• Supports Frequency Shift Keying (FSK) and On-Off Keying (OOK) modulation schemes
• Combines 8-bit RISC microcontroller core with XLP technology for energy efficiency
• Includes onboard analog-to-digital conversion and general-purpose I/O interfaces

RF Transmitter Applications

• Wireless sensor networks requiring low-power transmission
• Remote keyless entry systems
• Industrial telemetry and monitoring devices
• Consumer remote control applications

RF Transmitter Procurement Notes

Verify the specific suffix 'I/ST' to confirm the industrial temperature grade (-40°C to +85°C) and TSSOP-14 surface mount packaging. Ensure compatibility with the required operating voltage range of 1.8V to 3.6V for your target circuit design. Cross-reference the manufacturer part number against authorized distributors to guarantee authenticity and traceability. Confirm that the selected variant meets all regulatory compliance standards for the intended geographic market.

RF Transmitter Selection Notes

Select this component when a combined MCU and RF transmitter solution is required to minimize board space and component count. It is suitable for applications needing simple modulation protocols like FSK or OOK without external radio chips. Consider the 7 kB memory limit for complex firmware requirements. Evaluate the 10dBm output power capability against the necessary communication range and antenna design constraints for the specific deployment environment.

RF Transmitter Part Context

This part belongs to the PIC12LF1840 series, which enhances the traditional PIC12 architecture with integrated peripheral capabilities. The series is designed for cost-sensitive embedded applications requiring both processing and wireless connectivity. The 'LF' designation indicates Low Voltage operation, while 'XLP' refers to eXtreme Low Power technology optimized for battery-operated devices within the Microchip portfolio.

RF Transmitter Replacement Considerations

Consult official Microchip documentation for direct pin-compatible alternatives within the PIC12 family. Verify that any substitute maintains identical RF frequency ranges and modulation support. Ensure the replacement matches the 14-TSSOP footprint and electrical specifications for voltage and temperature.