STM8AL31E88TCX

Microcontrollers Overview

The STM8AL31E88TCX is an automotive-grade, 8-bit ultra-low-power microcontroller featuring the enhanced STM8 CPU core with up to 16 MIPS at 16 MHz. It integrates 64 Kbytes of Flash memory and 4 Kbytes of RAM within a 48-LQFP package. The device supports a supply voltage range of 1.8 V to 3.6 V and operates across temperatures from -40°C to +85°C. Key peripherals include a 12-bit ADC, two DACs, two comparators, a real-time clock, AES encryption, LIN interface, four 16-bit timers, one 8-bit timer, three USARTs, two SPIs, and an I2C interface.

Microcontrollers Feature Summary

• AEC-Q100 Grade 1 qualified for automotive reliability
• Ultra-low-power architecture with five distinct low-power modes including Halt mode at 400 nA
• Integrated hardware security via AES encryption module
• Supports non-intrusive in-application debugging through SWIM interface

Microcontrollers Applications

• Battery-powered remote keyless entry systems
• Tire pressure monitoring sensors
• Automotive anti-theft devices
• Low-power sensor nodes requiring LIN communication

Microcontrollers Procurement Notes

Verify the specific suffix TCX confirms the 48-LQFP packaging and tape-and-reel delivery format as indicated by distributor listings. Confirm the operating temperature grade matches the application requirements, as the base part number may support extended ranges. Ensure compatibility with existing development tools and check for any end-of-life notices or production change notifications affecting this specific variant.

Microcontrollers Selection Notes

Select this component when automotive qualification (AEC-Q100) and ultra-low power consumption are critical constraints. The integrated LCD driver is not available on the STM8AL31E8x variant; choose the STM8AL3LE8x series if display functionality is required. This MCU is suitable for applications needing robust security features like AES alongside standard communication interfaces such as LIN and USART.

Microcontrollers Part Context

This device belongs to the STM8AL3xE8x high-density family, designed specifically for automotive environments. It shares the modular peripheral set found in other ST families, facilitating migration to 32-bit architectures. The STM8AL series emphasizes energy efficiency and system cost reduction while maintaining high processing performance for complex control tasks.

Microcontrollers Replacement Considerations

Direct substitutes within the same package and pinout include other STM8AL31E8x variants with different memory sizes or temperature grades. For designs requiring LCD capabilities, the STM8AL3LE8x series serves as the functional equivalent with added display drivers.