STMicroelectronics STM8AL3L88TAY

Overview

STM8AL3L88TAY from STMicroelectronics is an AEC-Q100 Grade 1 qualified automotive 8-bit ultra-low-power microcontroller 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 including 400 nA Halt. It operates from 1.65–3.6 V across –40 to 125 °C and targets body control modules, smart sensors, and dashboard displays.

For engineers reviewing the STM8AL3L88TAY datasheet, STM8AL3L88TAY pinout, STM8AL3L88TAY application, or STM8AL3L88TAY equivalent, this page delivers verified technical context, validated pin functions, real-world automotive use cases, and confirmed alternative options for ECU subsystem design, low-power instrumentation, and functional-safety-constrained embedded timing systems.

Technical Context

The STM8AL3L88TAY implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz max frequency and supporting up to 40 external interrupt sources. 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 a clock security system for fault detection.

Power management includes programmable BOR with five thresholds, ultra-low-power POR/PDR, PVD, and five distinct low-power modes - notably Active-halt (1.4 µA with full RTC) and Halt (400 nA) with 4.7 µs wake-up. The device integrates DMA with 4 peripheral channels and 1 memory-to-memory channel, enabling autonomous data movement for ADC, AES, DAC, SPI, I²C, USART, and timers.

Key Specifications

Pinout & Package

LQFP80 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, with 67 I/Os - all mappable to interrupt vectors and supporting flexible PCB layout for high-pin-count automotive MCU applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8AL3L68TAY, the STM8AL3L88TAY adds AES and doubles Flash/RAM for secure OTA updates; versus RL78/F13-GB, it offers superior LCD integration and lower deep-sleep current but less CAN bandwidth - making it optimal for cost-sensitive, display-rich, battery-conscious automotive peripherals.

Availability

STM8AL3L88TAY is available at Aetrix Electronics and suitable for automotive body electronics, instrument clusters, and TPMS modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for STM8AL3L88TAY 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 for industrial and transportation markets.

The STM8AL ultra-low-power MCU product line targets automotive body electronics and infotainment peripherals, emphasizing extended battery life, functional safety readiness (ISO 26262 ASIL-B support), and seamless integration of analog, timing, and communication peripherals.

FAQ

What is the maximum operating temperature range for STM8AL3L88TAY?

The STM8AL3L88TAY is AEC-Q100 Grade 1 qualified and specified for continuous operation from –40 °C to +125 °C ambient temperature. This rating is validated across all electrical parameters in the datasheet, including Flash write endurance, ADC linearity, and RTC accuracy, making it suitable for under-hood and dashboard-mounted applications.

Does STM8AL3L88TAY support in-circuit debugging without dedicated JTAG pins?

Yes - STM8AL3L88TAY uses SWIM (Single-Wire Interface Module), a proprietary ST debug interface requiring only one dedicated pin (SWIM) plus VDD/VSS. It enables full non-intrusive debugging, flash programming, and memory inspection without occupying multiple pins or requiring external debug probes beyond ST-LINK/V2.

Can the integrated LCD controller drive common-anode or common-cathode displays?

The STM8AL3L88TAY LCD controller supports static, 2-mux, 3-mux, and 4-mux configurations with software-selectable bias and COM/SEG polarity. It natively drives both common-anode and common-cathode segmented LCDs up to 8×40 or 4×44, and includes an internal step-up converter to generate required VLCD voltages from VDD.

Is the 96-bit unique ID accessible during runtime for firmware binding or licensing?

Yes - the 96-bit unique ID is stored in read-only registers (addresses 0x4865–0x486A) and is accessible via standard memory-mapped reads after reset. It remains unchanged across power cycles and flash erases, enabling secure device identity binding, license enforcement, and anti-cloning measures in automotive firmware.