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STMicroelectronics STM8AL3166TAX — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8AL3166TAX 8-bit MCU, 16 MHz, 32 KB Flash, 32-LQFP

MPNSTM8AL3166TAX
Obsolete

STMicroelectronics STM8A series STM8AL3166TAX, 8-bit STM8 core MCU, 16MHz, 32KB (32K x 8) FLASH, 2K x 8 RAM, 1K x 8 EEPROM, 32-LQFP (7x7), -40°C~85°C.

$2.0631Ref. price · indicative, final on quote
STMicroelectronics STM8AL3166TAX datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AL3166TAX specifications
ParameterValue
SeriesSTM8A
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.65V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed16MHz
PackageTape & Reel (TR)
RAM size2K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)30
Core processorSTM8
Case32-LQFP
Data convertersA/D 22x12b; D/A 1x12b
Program memory size32KB (32K x 8)

Product details

Housed in a 32-LQFP package with a 7x7 mm body, the STM8AL3166TAX offers 30 general-purpose I/O lines. The surface-mount LQFP is rework-friendly with a standard hot-air profile — no hidden pads, no BGA alignment. Orientation is unambiguous: pin 1 mark is clearly molded. If you are swapping this in the field, a fine-tip iron and some flux will do the job, though a hot-air station makes removal cleaner.

Lifecycle reality — obsolete, but findable

Per the manufacturer, the STM8AL3166TAX is listed as Obsolete.

Frequently asked questions

What is the replacement for STM8AL3166TAX?

Since it is obsolete, buyers need a compatible drop-in or functional alternative.

Is STM8AL3166TAX still available for purchase?

Determines if you can still source it or need to redesign.

What are the key specifications of STM8AL3166TAX?

Engineers need to verify if it meets design requirements.

Where can I buy STM8AL3166TAX?

Sourcing buyers need authorized distributors and current stock.

What is the package of STM8AL3166TAX?

Critical for PCB layout and footprint compatibility.

What are the available alternatives to STM8AL3166TAX?

Broad range of options for design-out or replacement.