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STMicroelectronics STM8L151C3T3 — Microcontrollers & Processors (MCU / MPU / DSP)

STMicroelectronics STM8L151C3T3 8-bit MCU, 16 MHz

MPNSTM8L151C3T3
Active

STMicroelectronics STM8L151C3T3, STM8L EnergyLite series, 8-Bit MCU, 16MHz, 8KB Flash, 1K x 8 RAM, 256 x 8 EEPROM, 48-LQFP, -40°C to 125°C.

$2.7800Ref. price · indicative, final on quote
STMicroelectronics STM8L151C3T3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8L151C3T3 specifications
ParameterValue
SeriesSTM8L EnergyLite
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C ~ 125°C (TA)
Speed16MHz
PackageTray
RAM size1K x 8
Core size8-Bit
EEPROM size256 x 8
PeripheralsBrown-out Detect/Reset, DMA, IR, POR, PWM, WDT
ConnectivityI²C, IrDA, SPI, UART/USART
Number of i (O)40
Core processorSTM8
Case48-LQFP
Data convertersA/D 28x12b
Program memory size8KB (8K x 8)

Product details

What the 125°C rating means for your BOM

That extended temperature range puts it into motor-drive enclosures, engine-bay modules, and outdoor telecom gear where a commercial-grade 70°C part would derate or fail. The 8 KB Flash and 1 KB RAM are sized for sensor-fusion firmware, not application-level code — think a BLDC commutation controller or a battery-monitor supervisor, not a GUI host.

Supply range and low-power peripherals

The 28-channel 12-bit ADC covers multi-sensor acquisition on one chip.

ST lists the STM8L151C3T3 as Active, meaning no end-of-life notice is in effect and production is ongoing.

Frequently asked questions

Is STM8L151C3T3 a low-power MCU?

Yes, it belongs to the STM8L EnergyLite series, which is ST's low-power 8-bit family designed for battery-operated and energy-harvesting applications. The 1.8V minimum supply and integrated brown-out detect support extended battery life.

What are the alternatives or equivalents for STM8L151C3T3?

Within the STM8L151x3 family, density variants with the same 48-LQFP pinout are pin-compatible — qualifying a Flash/RAM variant as a second source is straightforward. No direct second-source from another manufacturer is listed on the official cross-reference.