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STMicroelectronics STM8AL31E88TCY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AL31E88TCY 8-bit MCU, 16 MHz, AEC-Q100, 48-LQFP

MPNSTM8AL31E88TCY
NRND

STMicroelectronics STM8A series, STM8AL31E88TCY, 8-bit MCU, 16 MHz, 64 KB Flash, 4K x 8 RAM, 2K x 8 EEPROM, AEC-Q100, -40°C to 125°C, 48-LQFP (7x7), Tray.

$2.7077Ref. price · indicative, final on quote
STMicroelectronics STM8AL31E88TCY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AL31E88TCY 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 ~ 125°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

Under-hood 8-bit control with AEC-Q100 pedigree

It runs at 16 MHz from an internal oscillator, with 64 KB of program Flash, 4K x 8 RAM, and 2K x 8 EEPROM — enough headroom for body-control modules, LIN-node actuators, and sensor-fusion nodes that must survive under-hood thermal cycling.

Peripheral set for mixed-signal automotive subsystems

The brown-out detect, POR, and watchdog peripherals are built in, so a simple supply filter and a few passives complete the minimum BOM.

That means it remains available for existing production runs but is no longer the target for new project qualifications. For a new design, the STM8A family includes pin-compatible siblings with similar Flash and RAM footprints; cross-referencing the 48-LQFP package and AEC-Q100 grade against current STM8A portfolio documents will identify the active successor.

Frequently asked questions

Is STM8AL31E88TCY obsolete?

That is not a full end-of-life notice, but it signals the part is being phased out. Existing production can continue, but new designs should migrate to an active STM8A variant.

What is the replacement for STM8AL31E88TCY?

STMicroelectronics has not published a single direct-replacement order code for this NRND part. The STM8A family includes multiple 48-LQFP devices with 64 KB Flash and AEC-Q100 qualification; reviewing the current STM8A selection guide against your required peripheral set (ADC channels, DAC, LIN) will identify the active pin-compatible successor.

Is STM8AL31E88TCY suitable for automotive applications?

Yes. The on-chip LIN, SPI, and UART interfaces are standard for automotive body and convenience networks.