STM8L151K2U3 STMicroelectronics Integrated Circuit (Quad Flat No-Lead) In Stock
The STM8L151K2U3 is an ultra-low-power 8-bit STM8L microcontroller with 4 KB Flash, integrated EEPROM, 16 MHz maximum CPU clock, and 30 I/O pins in a compact 32-pin UFQFPN package. It integrates ADC and DMA channels for efficient sensor interfacing in battery-powered applications. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat No-Lead
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- STM8L151K2U3 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low-power STM8L core enabling sub-µA standby current for long-life battery-operated sensor nodes
- 4 KB Flash with integrated EEPROM for non-volatile parameter storage without an external memory IC
- 30 I/O lines plus built-in ADC and DMA in a compact 32-pin UFQFPN footprint for space-constrained designs
Applications
The STM8L151K2U3 is designed for ultra-low-power applications such as wireless sensor nodes, smart meters, remote control devices, and wearable health monitors where battery life must extend for months or years on a single cell. Its 16 MHz STM8 core handles light data processing and peripheral management while the integrated DMA reduces CPU wake-up time in burst data-capture tasks. The 32-pin UFQFPN package minimizes PCB real estate in portable consumer and industrial products requiring on-chip EEPROM for configuration storage.
Specifications
| Manufacturer Package Code | UFQFPN |
| YTEOL | 8 |
| Has ADC | YES |
| Bit Size | 8 |
| CPU Family | STM8 |
| Clock Frequency-Max | 16MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-XQCC-N32 |
| Number of I/O Lines | 30 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 1024 |
| ROM (words) | 4096 |
| ROM Programmability | FLASH |
| Speed | 16MHz |
| Supply Current-Max | 4.88mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.15 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM8L151K2U3:
Frequently Asked Questions
What Flash and EEPROM memory sizes does the STM8L151K2U3 offer, and how does integrated EEPROM benefit embedded designs?
The STM8L151K2U3 integrates 4 KB of Flash program memory plus dedicated internal EEPROM for non-volatile data storage, eliminating the need for an external SPI or I2C EEPROM chip. This reduces BOM cost and board area while ensuring reliable storage of calibration constants, user settings, and event logs across thousands of write cycles at supply voltages down to 1.8 V.
Which battery-powered product categories are best served by the STM8L151K2U3 ultra-low-power architecture?
The STM8L151K2U3 targets smart meters, wireless temperature and humidity sensors, home automation remote controls, and medical wearables that must operate from a 3 V coin cell or AA battery for 1–5 years. Its sub-µA halt mode current and 16 MHz burst execution allow duty-cycle operation where the MCU wakes, reads 8 ADC channels or 30 I/O inputs, transmits data, and returns to sleep in under 1 ms.
How does the 32-pin UFQFPN package of STM8L151K2U3 compare with larger LQFP packages in terms of PCB area and assembly?
The UFQFPN-32 package measures approximately 5 mm × 5 mm versus 9 mm × 9 mm for an equivalent LQFP-32, saving roughly 56 mm² of PCB area. Its QFN footprint requires finer SMT capability — typically 0.5 mm pitch paste stencil — but the 30 accessible I/O lines and exposed thermal pad improve grounding and thermal dissipation in compact wearable and sensor PCB designs.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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