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STMicroelectronics STM8AL3188TAY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AL3188TAY 8-bit MCU, 16 MHz, 64 KB Flash, AEC-Q100, NRND

MPNSTM8AL3188TAY
NRND

STMicroelectronics STM8AL3188TAY, Automotive AEC-Q100 STM8A series, 8-bit MCU, 16 MHz, 64 KB Flash, 4K x 8 RAM, 2K x 8 EEPROM, 41 I/O, 48-LQFP, -40°C to 85°C.

$2.3496Ref. price · indicative, final on quote
STMicroelectronics STM8AL3188TAY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AL3188TAY specifications
ParameterValue
SeriesAutomotive, AEC-Q100, STM8A
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 size4K x 8
Core size8-Bit
EEPROM size2K 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 2x12b
Program memory size64KB (64K x 8)

Product details

For existing production, secure last-time-buy inventory through independent distribution.

This part is qualified to AEC-Q100, the automotive stress qualification standard. If your BOM calls for AEC-Q100 traceability, the STM8AL3188TAY delivers it; if the program requires PPAP documentation, confirm with your quality team that the supplier can provide the cert package.

16 MHz core and memory — sizing the firmware

The 16 MHz STM8 core with 64 KB Flash, 4 KB RAM, and 2 KB EEPROM is sized for automotive body-control nodes — LIN slave modules, window lift controllers, seat position sensors. The 2 KB EEPROM (separate from Flash) stores calibration and fault codes without wear-leveling overhead.

Package and supply — board-fit notes

Frequently asked questions

Is STM8AL3188TAY obsolete or NRND?

It is not yet fully discontinued, but STMicroelectronics advises against starting new designs with this part. For existing production, source through independent distribution against an RFQ; for new designs, evaluate a pin-compatible STM8A family member.

What is the best replacement for STM8AL3188TAY?

The exact replacement depends on your required Flash/RAM/EEPROM sizes and peripheral set — compare the memory map and ADC/DAC channels against your firmware binary before requalifying.

Is STM8AL3188TAY AEC-Q100 qualified for automotive?

Yes, the STM8AL3188TAY is part of the Automotive, AEC-Q100, STM8A series, meaning it has passed the automotive stress qualification tests required for ECU and body-control applications.