STMicroelectronics STM8AL31E8ATCX

Mfr. Part

STM8AL31E8ATCX

Manufacturer

STMicroelectronics

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Detailed Description

Automotive-grade 8-bit microcontroller with STM8 core, 64KB Flash, 4KB RAM, and 2KB EEPROM in an 80-pin LQFP (14 x 14 mm) package. Runs up to 16 MHz with an internal oscillator. Wide supply range from 1.65V to 3.6V, operates from -40°C to +105°C (TA). Rich analog and digital features: 28-channel 12-bit ADC and 2-channel 12-bit DAC. Extensive peripherals: DMA, PWM, watchdog, brown-out detect/reset, power-on reset. Robust serial connectivity: I2C, IrDA, LINbus, SPI, UART/USART. Designed for automotive AEC‑Q100 applications, STM8A series. RoHS3 compliant. Ideal for high I/O designs with 68 user I/Os and strong reliability.

Key Features

STM8 8-bit core, up to 16 MHz

64KB Flash program memory (64K x 8)

4KB RAM (4K x 8)

2KB EEPROM (2K x 8)

Internal oscillator

68 user I/Os in 80-pin LQFP

28-channel 12-bit ADC

2-channel 12-bit DAC

DMA, PWM, watchdog (WDT), POR, brown-out detect/reset

Serial connectivity: I2C, IrDA, LINbus, SPI, UART/USART

Supply voltage: 1.65V to 3.6V

Operating temperature: -40°C to +105°C (TA)

Automotive, AEC‑Q100 qualified

RoHS3 compliant

Base product number: STM8

Mounting type: Surface mount

Key Advantages

Automotive reliability with AEC‑Q100 qualification

Wide voltage and temperature ranges for harsh environments

High analog integration (12-bit ADC and DAC) reduces external components

Large I/O count for complex control panels and sensor interfaces

Low power operation with robust reset and watchdog for safety

Stable performance with internal oscillator and brown-out protection

Proven STM8 ecosystem with mature tools and software support

Small footprint and easy assembly in standard LQFP package

Packaging

Type: 80-lead LQFP (Low-Profile Quad Flat Package)

Material: Molded epoxy plastic with copper leadframe (industry-standard LQFP)

Body size: 14 mm x 14 mm

Lead count: 80 pins; 68 user I/O available (remaining pins are power, ground, oscillator, reset, etc.)

Mounting: Surface-mount technology (SMT)

Supplier device package: 80-LQFP (14 x 14)

Shipping packaging: Tray (for stable handling and assembly)

Thermal characteristics: -40°C to +105°C ambient operating; plastic LQFP for efficient PCB heat spreading; design for good copper area under package to optimize thermal performance

Electrical properties: VCC 1.65V–3.6V, up to 16 MHz core clock with internal oscillator; integrated 12-bit ADC (28 channels) and 12-bit DAC (2 channels); ESD and EMC robustness consistent with automotive-grade STM8A devices

Lifecycle

Status: Active and in production as part of the STM8A automotive series; not nearing discontinuation based on current market data

Cross and alternatives (verify pinout and exact features before use):

- STM8AL31E8 variants in different packaging options (e.g., tray vs. tape-and-reel)

- STM8AL31E8 devices with different pin counts for platform scaling (e.g., LQFP64 or VFQFPN48 options)

- STM8AL31F3 (similar series with different Flash size and pin options)

- STM8AL3x family derivatives for memory and package adjustments

For exact drop-in equivalents or a tailored shortlist, please contact our sales team via the Y-IC website. We will match pinout, memory, peripherals, and qualification to your requirements.

Key Application Areas

Automotive body electronics (LIN nodes, door modules, seat controls)

Instrument clusters, HVAC panels, and dashboard controls

Sensor interfaces and actuator control in vehicles

Battery-powered devices and low-voltage systems

Industrial control, motor control, and PWM-driven loads

Home appliances and consumer products needing robust 8-bit control

Communication gateways using I2C/SPI/UART/IrDA/LIN

Safety-critical subsystems leveraging watchdog and brown-out reset

Datasheet

Y-IC provides the most authoritative and up-to-date datasheet for STM8AL31E8ATCX on our product page. We recommend downloading it here to get full specifications, pinout, and design guidelines.

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