STMicroelectronics STM8AL3LE88TCX

Overview

STM8AL3LE88TCX from STMicroelectronics is an AEC-Q100 Grade 1 qualified automotive 8-bit ultra-low-power MCU featuring 64 KB Flash, 2 KB data EEPROM with ECC, 4 KB RAM, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, LCD controller (8×40/4×44), AES hardware accelerator, RTC with ±0.5 ppm accuracy, and five low-power modes down to 400 nA in Halt. It targets battery-powered automotive body electronics such as smart sensors and dashboard displays.

For engineers reviewing the STM8AL3LE88TCX datasheet, STM8AL3LE88TCX pinout, STM8AL3LE88TCX application, or STM8AL3LE88TCX equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, ultra-low-power operation (1.4 µA Active-Halt with RTC), integrated LCD driver, automotive-grade temperature range (−40 to 125 °C), and SWIM-based non-intrusive debugging support.

Technical Context

The STM8AL3LE88TCX implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates dual crystal oscillators (32 kHz LSE + 1–16 MHz HSE), factory-trimmed 16 MHz HSI and 38 kHz LSI RC sources, and clock security system for fail-safe operation.

Power management includes five configurable low-power modes, programmable BOR with five thresholds, PVD, and ultra-low I/O leakage (50 nA per pin). The peripheral set centers on automotive timing and interface needs: three USARTs supporting LIN 1.3/2.0 and IrDA, two SPIs, Fast I²C (400 kHz), and DMA with dedicated channels for AES, ADC, DAC, and communication interfaces.

Key Specifications

Pinout & Package

LQFP80 package (14 × 14 mm, 0.5 mm pitch), thermally enhanced for automotive under-hood use. Pin count and LCD segment mapping confirm full 8×40 capability in this variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive ultra-low-power MCU applications.

Compared with STM8AL3LE88TCX, STM8AL31E88TCX removes LCD functionality while retaining identical power, timing, and interface specs - ideal for cost-sensitive non-display roles; RL78/F13-GB offers higher processing headroom but requires external LCD bias and lacks AES, increasing BOM complexity for secure display systems.

Availability

STM8AL3LE88TCX is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, engine bay sensor nodes, and HVAC controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM8AL3LE88TCX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade silicon.

The STM8AL ultra-low-power MCU product line targets automotive body electronics and battery-constrained systems, emphasizing AEC-Q100 compliance, sub-µA power states, integrated analog peripherals, and secure firmware execution.

FAQ

What is the maximum operating temperature for STM8AL3LE88TCX?

The STM8AL3LE88TCX is AEC-Q100 Grade 1 qualified and rated for continuous operation from −40 °C to +125 °C. This specification is validated per automotive stress test standards and applies across all operating modes, including full-speed 16 MHz execution and active LCD driving. Thermal derating is not required within this range.

Does STM8AL3LE88TCX support hardware AES encryption?

Yes, STM8AL3LE88TCX integrates a dedicated AES-128 hardware accelerator with DMA support. It performs encryption/decryption in constant time, accepts keys via protected registers, and operates independently of the CPU - enabling secure boot, firmware signing, and encrypted LIN/CAN message payloads without performance penalty.

How many I/O pins support external interrupt capability?

All 67 general-purpose I/O pins on STM8AL3LE88TCX can be individually configured as external interrupt sources. Each pin maps to one of 40 interrupt vectors, supporting edge-triggered (rising/falling/both) detection. This enables wake-from-Halt on any pin transition, essential for event-driven automotive subsystems.

Is the LCD controller capable of driving common-anode or common-cathode displays?

The STM8AL3LE88TCX LCD controller supports both common-anode and common-cathode segment LCDs via software-configurable bias generation and COM/SEG polarity inversion. It delivers up to 8 commons and 40 segments (or 4 commons and 44 segments), with integrated step-up converter providing VLCD up to 5.5 V from a 1.8–3.6 V supply.