STMicroelectronics STM8AL3146UCX

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM8A
Packaging Tape & Reel (TR) | NULL
Core Processor STM8A
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O 30
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
EEPROM Size 1K x 8
RAM Size 2K x 8
Voltage - Supply (Vcc/Vdd) 1.65V ~ 3.6V
Data Converters A/D 22x12b; D/A 1x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade Automotive
Qualification AEC AEC-Q100
Mounting Type Surface Mount
Supplier Device Package 32-VFQFPN (5x5)
Package / Case 32-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM8AL3146UCX from STMicroelectronics is a low-power 8-bit microcontroller built on the STM8A core. It operates from 1.65V to 3.6V at up to 16MHz, with 16KB flash and 2KB RAM. Housed in a compact 32-VFQFN package, it includes DMA, PWM, and brown-out detection, making it ideal for automotive and industrial applications requiring extended temperature range.

  • Ultra-low voltage operation (1.65V) – enables direct battery-powered designs without boost converters.
  • High-temperature tolerance (125°C) – reliable in harsh automotive environments.
  • Integrated DMA and PWM – reduces CPU load for efficient real-time control.
  • Compact 32-VFQFN package – saves PCB space in space-constrained designs.

Automotive Body Control Modules

The 125°C operating temperature and 1.65V low-voltage operation make it suitable for under-hood body control electronics.

Battery-Powered Sensor Nodes

With a 1.65V minimum supply and low-power STM8A core, it extends battery life in wireless sensor networks.

Industrial Actuator Control

PWM channels and DMA support enable precise motor or valve control in industrial automation.

Portable Medical Devices

The small 32-VFQFN package and low-voltage operation fit compact, power-sensitive diagnostic tools.

Smart Lighting Systems

Integrated WDT and brown-out reset ensure reliable operation in LED drivers and smart switches.

Automotive LIN Nodes

Its robust temperature range and peripheral set support LIN bus slave nodes in vehicle networks.

Q: What is the operating voltage range of the STM8AL3146UCX?
A: It operates from 1.65V to 3.6V, ideal for low-power battery applications.
Q: What core does this MCU use?
A: It uses the STM8A core running at up to 16MHz.
Q: How much flash memory is available?
A: It has 16KB of program flash and 2KB of RAM.
Q: What package is the STM8AL3146UCX offered in?
A: It comes in a 32-VFQFN exposed pad package.
Q: What is the temperature range?
A: It is rated for -40°C to 125°C, suitable for automotive environments.
Base Product Number : STM8AL3146
-40 to 125C 16KB flash 16MHz 2KB RAM 8-bit MCU automotive brown-out reset DMA low power PWM STM8A core VFQFN-32
Q: What is the operating voltage range of the STM8AL3146UCX?
A: It operates from 1.65V to 3.6V, ideal for low-power battery applications.
Q: What core does this MCU use?
A: It uses the STM8A core running at up to 16MHz.
Q: How much flash memory is available?
A: It has 16KB of program flash and 2KB of RAM.
Q: What package is the STM8AL3146UCX offered in?
A: It comes in a 32-VFQFN exposed pad package.
Q: What is the temperature range?
A: It is rated for -40°C to 125°C, suitable for automotive environments.