STMicroelectronics STM8AL3L66TAY

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM8A
Packaging Tray |
Core Processor STM8A
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
Number of I/O 29
Program Memory Size 32KB (32K 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 21x12b; D/A 1x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 32-LQFP (7x7)
Package / Case 32-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM8AL3L66TAY is an automotive-grade 8-bit microcontroller from STMicroelectronics, featuring a 16MHz STM8A core. With 32KB Flash and 2KB RAM, it is designed for reliable operation in vehicles. Its unique features include an integrated LCD driver, 21-channel 12-bit ADC, and 12-bit DAC, making it ideal for dashboard and body control applications. Operating from 1.65V to 3.6V, it supports low-voltage automotive electronics.

  • Automotive Grade: Designed for -40°C to 85°C operation, meeting automotive reliability standards.
  • Integrated LCD Driver: Directly drives segmented LCDs, reducing external components and cost.
  • Wide Voltage Range: Supports 1.65V-3.6V, compatible with modern low-voltage automotive systems.
  • Rich Analog Peripherals: 21-channel 12-bit ADC and 12-bit DAC provide precise analog interfacing.
  • DMA Controller: Enhances data throughput without burdening the CPU.

Automotive Body Control Modules

In body control modules, the STM8AL3L66's 16MHz core and 21-channel ADC enable efficient processing of switch inputs and sensor signals, while the LCD driver supports direct display integration.

Dashboard Instrument Clusters

With its integrated LCD driver and PWM outputs, it can control segmented displays and indicator LEDs, providing a cost-effective solution for instrument clusters.

Automotive Sensor Interfaces

For temperature and pressure sensors, the 12-bit ADC ensures accurate readings, and the DMA allows efficient data transfer without CPU intervention.

Low-Power Automotive Systems

Operating from 1.65V, it is suitable for always-on systems like keyless entry receivers, maintaining low power consumption.

Electric Vehicle Battery Management

In BMS, the MCU monitors cell voltages and temperatures, using its ADC and communication interfaces to report status to the main controller.

Q: What is the core architecture of the STM8AL3L66TAY?
A: It uses the STM8A 8-bit core, optimized for automotive applications.
Q: What is the maximum operating frequency?
A: The MCU operates at up to 16MHz, providing adequate performance for automotive control.
Q: What is the operating voltage range?
A: It operates from 1.65V to 3.6V, supporting low-voltage automotive systems.
Q: How much Flash and RAM does it have?
A: It includes 32KB of Flash and 2KB of RAM, suitable for automotive firmware.
Q: What peripherals are available?
A: It features 21-channel 12-bit ADC, 12-bit DAC, DMA, LCD driver, PWM, and multiple communication interfaces.
Q: What are typical applications?
A: Ideal for automotive body control, dashboard displays, and sensor modules.
Base Product Number : STM8AL3L66
12-bit ADC 12-bit DAC 16MHz 2KB RAM 32KB Flash 8-bit Automotive DMA LCD Driver LQFP-32 MCU PWM STM8A STMicroelectronics
Q: What is the core architecture of the STM8AL3L66TAY?
A: It uses the STM8A 8-bit core, optimized for automotive applications.
Q: What is the maximum operating frequency?
A: The MCU operates at up to 16MHz, providing adequate performance for automotive control.
Q: What is the operating voltage range?
A: It operates from 1.65V to 3.6V, supporting low-voltage automotive systems.
Q: How much Flash and RAM does it have?
A: It includes 32KB of Flash and 2KB of RAM, suitable for automotive firmware.
Q: What peripherals are available?
A: It features 21-channel 12-bit ADC, 12-bit DAC, DMA, LCD driver, PWM, and multiple communication interfaces.
Q: What are typical applications?
A: Ideal for automotive body control, dashboard displays, and sensor modules.