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STMicroelectronics STM8AL3L68TAX — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8AL3L68TAX 8-bit MCU, 16 MHz, 32 KB Flash, 48-LQFP

MPNSTM8AL3L68TAX
NRND

STMicroelectronics STM8A series, STM8AL3L68TAX, 8-bit MCU, 16 MHz, 32KB (32K x 8) FLASH, 2K x 8 RAM, 1K x 8 EEPROM, 41 I/O, 48-LQFP, -40°C to 85°C.

$2.0293Ref. price · indicative, final on quote
STMicroelectronics STM8AL3L68TAX datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AL3L68TAX 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
PackageTube
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 size32KB (32K x 8)

Product details

The STM8AL3L68TAX is an 8-bit MCU from STMicroelectronics' STM8A series, built around the STM8 core and clocked at 16 MHz. The internal oscillator saves the external crystal cost in applications that can tolerate the accuracy of the on-chip RC.

Analog integration: 25-channel ADC and a DAC on an 8-bit MCU

The 25 analog inputs reduce external multiplexing for multi-sensor designs — think thermistor banks, potentiometer arrays, or current-sense amplifier outputs. The DAC is less common in the 8-bit MCU space and simplifies closed-loop analog control or waveform generation without an external converter.

NRND — planning for the BOM line

It remains available through independent distribution for existing production BOMs and service requirements, but STMicroelectronics has flagged it for eventual phase-out. New designs should evaluate the current-production STM8L or STM8AF series alternatives in the same package footprint. No last-time-buy date has been published at this writing, so the window for last-buy orders is open — but the NRND marker means the clock is running.

Frequently asked questions

Is STM8AL3L68TAX obsolete or NRND?

It is not yet discontinued but is flagged for eventual phase-out. Existing production BOMs can still be filled; new designs should target a current-production STM8L or STM8AF series alternative.

What is the core architecture of STM8AL3L68TAX?

The core is an 8-bit STM8 processor, clocked at 16 MHz. It is the same STM8 core used across the STM8A series, with a single-cycle I/O access and a 3-stage pipeline.

What is the closest pin-compatible alternative to STM8AL3L68TAX?

Within the STM8A family, higher-density Flash variants in the same 48-LQFP footprint (e.g., STM8AL3L88T with 64 KB Flash) share the same pinout and peripheral set, offering a memory upgrade path. For new designs, the STM8L151C8T6 in the same package is a current-production alternative with comparable analog integration, though pin compatibility should be verified against the respective datasheets.

What is STM8AL3L68TAX's listed speed?

The listed core speed is 16 MHz. This is the maximum clock frequency for the STM8 core in this device, with flash wait states handled automatically by the internal clock control.