AX8052F100-2-TA05

Overview

The AX8052F100-2-TA05 is an ultra-low power microcontroller in a QFN28 package, operating from 1.8 V to 3.6 V across -40°C to 85°C. It features a high-speed 8052-compatible core with 20 MIPS performance and 64 kBytes of FLASH memory offering 100,000 erase cycles. The device includes 8.25 kBytes of internal SRAM, three 16-bit general-purpose timers, two UARTs, a Master/Slave SPI controller, and a 10-bit 500 kSample/s ADC. Additional peripherals include analog comparators, a temperature sensor, a 2-channel DMA controller, and a dedicated AES crypto engine.

Feature Summary

• Ultra-low power consumption with multiple sleep modes retaining varying RAM sizes down to sub-microampere levels
• Dedicated hardware debug interface supporting breakpoints and single-stepping via a 3-wire protocol
• Integrated AES crypto controller with DMA support for secure data processing
• Flexible clocking system with automatic calibration of internal oscillators

Applications

• Radio applications and transceivers for telemetric systems
• Sensor networks and home automation devices
• Automatic meter reading (AMR) solutions
• Remote keyless entry systems
• Active RFID tags and wireless audio devices

Procurement Notes

Verify the ordering suffix TA05 corresponds to the 500-unit tape and reel packaging format as specified in the official documentation. Confirm that the -2 speed grade variant meets the required operational frequency specifications for your design. Ensure the QFN28 thermal pad connection requirements are addressed in the PCB layout to maintain reliability within the specified temperature range.

Selection Notes

Select this component when integrating with onsemi AXRadio ICs or similar SPI-based radio peripherals due to the dedicated Radio Master SPI interface. Consider the specific sleep mode current requirements to determine if the 256 Byte, 4 kByte, or 8 kByte RAM retention options suit the application's wake-up needs. Evaluate the need for the dedicated AES engine if cryptographic security is a primary design constraint.

Part Context

This part belongs to the AX8052 family of ultra-low power microcontrollers designed primarily for battery-operated radio applications. It shares the same core architecture and peripheral set as other variants in the series, differing mainly in speed grades and packaging configurations. The device is optimized for low idle power consumption while maintaining high performance during active execution.

Replacement Considerations

AX8052F100-3-TA05: Higher speed grade variant with identical pinout and functionality.

FAQ

How does the debug interface function regarding GPIO pins?

The debug interface uses a 3-wire protocol where one wire is dedicated (DBG_EN) and two wires (PB6, PB7) are shared with GPIO pins. When DBG_EN is driven high, these pins convert to debug interface functions.

What is the mechanism for protecting firmware via the debug interface?

The debug interface can be locked using a user-programmable 64-bit key. Unauthorized persons cannot read the firmware through the debug interface without this key, though secure erase can still be initiated.