ATA5795C-PNQW

RF Transmitter Overview

The ATA5795C-PNQW is an embedded AVR microcontroller integrating a UHF ASK/FSK RF transmitter and immobilizer LF functionality for remote keyless entry systems. It operates within the 310 MHz to 318 MHz, 418 MHz to 477 MHz, and 836 MHz to 956 MHz frequency bands. The device features 24 kB of program memory and 1 kB of data RAM. It supports supply voltages from 1.9 V to 5.5 V and includes SPI interface connectivity. Packaged in a QFN-32 format, it is qualified under AEC-Q100 standards for automotive applications.

RF Transmitter Feature Summary

• Integrates an embedded AVR microcontroller with dedicated RF transmitter and immobilizer low-frequency capabilities
• Supports multiple ISM frequency bands including UHF ranges for global remote keyless entry compatibility
• Automotive-grade qualification ensuring reliability under extended temperature conditions

RF Transmitter Applications

• Remote keyless entry systems
• Vehicle immobilizer integration
• Automotive access control modules

RF Transmitter Procurement Notes

Verify the specific ordering suffix and package variant against the official Microchip datasheet to ensure correct pinout and electrical characteristics. Confirm AEC-Q100 qualification status if automotive grade compliance is required for the target application. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components and ensure supply chain authenticity.

RF Transmitter Selection Notes

Select this component when a combined MCU and RF solution is needed for automotive RKE applications. Ensure the operating voltage range aligns with the system power supply. Verify that the integrated LF functionality meets the specific immobilizer requirements without needing external transceivers. Consider the QFN-32 package constraints for PCB layout and thermal management during the design phase.

RF Transmitter Part Context

This device belongs to the ATA5795 family of embedded microcontrollers designed specifically for automotive security and access applications. It combines processing power with wireless transmission capabilities, reducing bill-of-materials complexity by integrating both logic and RF functions into a single silicon solution optimized for vehicle environments.

RF Transmitter Replacement Considerations

Consult the official Microchip product selection guide for direct cross-references within the ATA579x series. Verify functional equivalence regarding memory size, I/O count, and RF output power before substituting.