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STMicroelectronics STM8AL3148TAY — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8AL3148TAY 8-bit MCU, 16 MHz, 16 KB Flash, 48-LQFP

MPNSTM8AL3148TAY
NRND

STMicroelectronics STM8A series STM8AL3148TAY, 8-bit MCU, 16 MHz, 16 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 48-LQFP, -40°C to 85°C, 1.65 V to 3.6 V supply.

$2.0388Ref. price · indicative, final on quote
STMicroelectronics STM8AL3148TAY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AL3148TAY 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
PackageTray
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)41
Core processorSTM8
Case48-LQFP
Data convertersA/D 25x12b; D/A 1x12b
Program memory size16KB (16K x 8)

Product details

8-bit MCU for automotive and industrial control — 16 MHz, 16 KB Flash, rich analog

The STMicroelectronics STM8AL3148TAY is an 8-bit MCU from the STM8A series, built around the STM8 core and clocked at 16 MHz.

NRND status — plan your BOM transition

This means STMicroelectronics is phasing the part out; it is not the right choice for a new project starting today. Buyers should evaluate a pin-compatible replacement within the STM8A family for ongoing supply.

With 16 KB of Flash and 2 KB of RAM, this MCU is sized for control firmware, not data-heavy applications. Typical firmware for a LIN-bus node, a brushless-DC motor controller, or a multi-sensor aggregator fits within 16 KB. The 1 KB EEPROM allows parameter storage (calibration constants, fault counters) without wearing the Flash. The 41 I/O lines in a 48-LQFP package give good pinout flexibility for mixed digital and analog signals.

Connectivity and peripherals — LINbus, SPI, I²C, and more

The LINbus support is key for automotive body electronics — door modules, seat controllers, and lighting nodes. The brown-out detect, POR, and watchdog peripherals improve system robustness in noisy environments. An internal oscillator reduces external BOM count, though a crystal can be added for tighter timing.

Frequently asked questions

Is STM8AL3148TAY obsolete?

It is not fully obsolete, but STMicroelectronics is phasing it out. For new designs, look for a pin-compatible replacement within the STM8A family.

What is the direct replacement for STM8AL3148TAY?

The evidence does not list a specific direct replacement order code. Within the STM8A series, there are pin-compatible variants with different memory sizes and peripheral sets. Contact our sourcing team with your exact requirements to identify the best alternative for your BOM.

What is STM8AL3148TAY's listed speed?

The core runs at 16 MHz, which is the maximum clock speed for this 8-bit STM8 core. At this speed, single-cycle instruction execution is typical for many operations, giving effective throughput well above what the raw MHz suggests for control code.