STMicroelectronics STM8AL3146UAY

Mfr. Part

STM8AL3146UAY

Manufacturer

STMicroelectronics

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Detailed Description

8-bit STM8 automotive microcontroller with 16 KB Flash, 2 KB RAM, 1 KB EEPROM, 30 GPIO, 12-bit ADC with 22 channels, 12-bit DAC, internal oscillator, LINbus, I2C, SPI, UART/USART. Operates from 1.65 V to 3.6 V at up to 16 MHz. AEC-Q100 qualified in a compact 32-VFQFPN 5x5 mm package with exposed pad. RoHS3 compliant.

Key Features

STM8 8-bit core up to 16 MHz

16 KB Flash program memory

2 KB RAM and 1 KB EEPROM

30 flexible I/O pins

Peripherals Brown-out Detect and Reset, DMA, Power-On Reset, PWM, Watchdog

Connectivity I2C, IrDA, LINbus, SPI, UART and USART

Data converters ADC 22 channels at 12-bit, DAC 1 channel at 12-bit

Internal oscillator for simple clocking

Supply voltage 1.65 V to 3.6 V

Operating temperature -40°C to +85°C ambient

Package 32-VFQFPN 5x5 mm with exposed thermal pad

Automotive grade AEC-Q100

RoHS3 compliant

Key Advantages

Low-voltage operation down to 1.65 V for battery-powered designs

Automotive reliability with AEC-Q100 qualification

Rich analog integration reduces external components and cost

Small 5x5 mm QFN footprint enables dense layouts

Internal oscillator simplifies BOM and startup

Robust protection BOR, POR, WDT enhance system safety

On-chip EEPROM supports data logging and parameter storage

Broad communication support for automotive and industrial buses

Packaging

Type 32-VFQFPN also referred to as 32-VFQFN with exposed pad

Body size approximately 5 mm x 5 mm, low-profile quad flat no-lead

Pin count 32 leads plus exposed center pad for thermal and ground

Mounting Surface-mount with standard reflow compatibility

Material Molded epoxy over copper leadframe, tin-based lead finish typical

Shipment Tray packaging for stable handling and assembly

Pin configuration Fine-pitch QFN leads on all four sides, center EP to PCB ground plane

Thermal characteristics Exposed pad improves heat spreading and lowers thermal resistance; follow ST layout and via stitching guidelines

Electrical properties Core up to 16 MHz, VDD 1.65 V to 3.6 V, robust ESD and EMC practices expected for automotive grade; use decoupling close to VDD and VSS pins

Lifecycle

Status Generally active within the STM8A automotive family based on public information

Not indicated as nearing discontinuation at this time; confirm current status with our sales team for your region and timeframe

Equivalent or alternative models Close alternatives exist within the STM8A and STM8AF families with similar memory sizes and peripherals, often available in multiple packages and grades

For a precise, up-to-date cross list matched to your requirements package, temperature, peripheral set please contact our sales team via the Y-IC website and we will provide vetted equivalents and migration guidance

Key Application Areas

LIN nodes and body electronics modules door locks, window lifters, seat controls

Automotive sensors and actuators with mixed-signal needs

Instrument clusters, dashboards, and HMI controls

Small motor control PWM-based DC and BLDC assist functions

Battery-powered modules operating at low voltage

Industrial control and automation with UART, SPI, I2C networking

Whitegoods and HVAC controllers with integrated ADC and EEPROM

Lighting control and dimming using DAC and PWM

IrDA and simple remote interfaces

Datasheet

Y-IC hosts the most authoritative datasheet for STM8AL3146UAY. Download the datasheet on this page to get full specifications, electrical characteristics, timing, and application notes for design success.

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