STM8L151C4T3 - 8-Bit 16MHz 16KB MCU | STMicroelectronics
MPN: STM8L151C4T3 ✓ Active| Qty | Unit Price | Extended |
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STM8L151C4T3 Overview
An ultra-low-power MCU is a microcontroller designed to minimize energy use while retaining enough processing and peripheral capability for sensing, monitoring, control, and user-interface tasks. The STM8L family belongs to the hierarchy microcontroller, embedded processor, semiconductor, and embedded system component. Its low-power positioning makes it relevant to battery-operated equipment, environmental monitors, compact controls, and other systems where energy availability constrains design choices.
The supplied product data identifies 16 KB of Flash memory, a maximum clock frequency of 16 MHz, a 1.8 V to 3.6 V supply range, and 41 I/O ports. The STM8L151C4 family description also identifies LCD, timers, real-time-clock, ADC, DMA, EEPROM, and low-power capabilities at the family level. Because the exact target-device peripheral mapping and electrical limits were not included in the verified excerpts, individual feature details should be confirmed in the manufacturer documentation before schematic or firmware decisions.
The device is identified as part of the STM8 EnergyLine ultra-low-power portfolio and is specifically described as an STM8L151 8-bit MCU with an ADC and DMA. Its 48-LQFP package provides a conventional leaded footprint that can simplify assembly and inspection compared with a very fine-pitch package, although it occupies more PCB area than smaller packages. The listed operating voltage supports both 2.5 V and 3.3 V system concepts found in the comparison search results.
Typical design targets include low-power sensing nodes, compact industrial controls, battery-powered monitors, LCD-equipped user interfaces, and embedded measurement systems. The MCU can serve as the central controller for acquiring sensor data, driving a display, sequencing low-power modes, and communicating through the peripherals supported by the selected STM8L151C4 variant. Firmware and hardware decisions should be checked against the complete manufacturer datasheet and device-specific pinout.
Design with the 1.8 V to 3.6 V supply range as a hard boundary. Confirm decoupling, clock configuration, debug access, unused-pin treatment, and the exact LQFP land pattern from the official documentation. For battery systems, calculate average current over the complete measurement-and-sleep cycle rather than using only active-mode current.
This product page consolidates verified distributor identity, package, memory, voltage, speed, and lifecycle information with practical design guidance. It also separates confirmed facts from parameters requiring verification, helping engineers compare sourcing options without inventing missing electrical or package details.
Drop-in alternatives for STM8L151C4T3 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesSTM8L151C4T3 Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit ultra-low-power microcontroller |
| Architecture | STM8 8-bit |
| Maximum Clock Speed | 16 MHz |
| Flash Memory | 16 KB (16K x 8) |
| ROM Type | Flash |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Ports | 41 |
| Package | 48-LQFP (7 x 7 mm) |
| Device Family | STM8L151x4/6 |
| Family Positioning | Medium-density STM8L ultra-low-power 8-bit family |
| Product Lifecycle | Active |
| ADC | Supported; exact target-device details require datasheet verification |
| DMA | Supported; exact target-device details require datasheet verification |
| Data EEPROM | 1 KB at STM8L151 family level |
| RTC | Supported at STM8L151 family level |
| LCD Support | Supported at STM8L151 family level |
| Timers | Supported; exact target-device details require datasheet verification |
| Mounting Type | Surface mount |
STM8L151C4T3 48-lqfp (7 x 7 mm) Pin Configuration Guide
Pin configuration for STM8L151C4T3 (48-lqfp (7 x 7 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM8L151C4T3.
Refer to the datasheet for full pin configuration.
Typical Applications
STM8L151C4T3 is suitable for 6 applications: Battery-Powered Environmental Sensor, Compact Industrial Control Module, Battery-Powered Sensor Node, LCD-Equipped Utility Device, Smart Home Sensor Interface, Portable Measurement Instrument.
Battery-Powered Environmental Sensor
The STM8L151C4T3 fits low-power environmental sensing because it combines an STM8L ultra-low-power 8-bit architecture with a 16 MHz clock, 16 KB Flash, and a 1.8 V to 3.6 V supply range. It can acquire sensor data, apply filtering or threshold logic, and enter low-power states between measurements. The verified data identifies ADC and DMA capabilities at family or product-description level, but exact channels, conversion rates, and sleep currents require datasheet confirmation. Battery life should therefore be estimated from the complete measurement-and-sleep cycle rather than from maximum clock speed alone.
Recommended
Compact Industrial Control Module
STM8L151C4T3 is appropriate for compact control boards that need deterministic embedded processing without a high-power processor. Its 8-bit STM8 architecture, 16 MHz maximum clock, 16 KB Flash, and 41 I/O ports provide a practical platform for button handling, status LEDs, simple interlocks, and actuator-control logic. The 48-LQFP package also offers inspectable leads for conventional manufacturing. Before fixing the design, verify pin multiplexing, timer capacity, ADC channels, supply current, and operating-temperature limits in the manufacturer documentation.
Recommended
Battery-Powered Sensor Node
The STM8L151C4T3 can serve as the local controller in a battery-powered sensor node that samples, scales, and records low-bandwidth measurements. Its 1.8 V to 3.6 V operating range fits common low-voltage rails, while 16 KB Flash supports a focused application rather than a large embedded workload. ADC and DMA support makes event-driven data acquisition plausible, but exact electrical limits must be verified. Firmware should use low-power wake-up modes and disable unused peripherals to reduce average current in long deployment intervals.
Recommended
LCD-Equipped Utility Device
STM8L151C4T3 is suitable for a compact utility device with a simple display and local controls. The STM8L151 family description identifies LCD support, timers, and real-time-clock functionality, while the target provides 41 I/O ports and a 48-LQFP footprint. This combination can support status pages, counters, keypad input, and timed events without an external display controller. The LCD segment count, alternate-function mapping, drive voltage, and timing requirements are not present in the supplied excerpts, so they must be checked before assigning the display interface.
Recommended
Smart Home Sensor Interface
STM8L151C4T3 can act as a smart-home sensing endpoint when the design needs local thresholding and control rather than only wireless-data forwarding. Its low-power family positioning, 16 MHz speed, and 41 I/O ports allow a compact firmware image to manage switches, probes, status indicators, and alarm logic. If a separate radio handles connectivity, the MCU can wake, process an input, update an output, and return to a low-energy state. Wireless interface selection and pin allocation are outside the verified excerpts and require separate engineering validation.
Recommended
Portable Measurement Instrument
STM8L151C4T3 suits a portable measurement instrument that must combine sensor acquisition with a simple local interface. The verified 8-bit STM8L MCU supports 16 MHz operation, 16 KB Flash, and a 3.6 V maximum listed supply, making it appropriate for compact, low-voltage products. ADC, DMA, timers, and RTC support are identified at the family or product-description level. Measurement accuracy is not established by those features alone; calibration, reference quality, analog layout, sample timing, and noise performance must be validated with the complete datasheet.
Recommended
Recommended Products Summary
Engineering reference data for STM8L151C4T3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 48-LQFP (7 x 7 mm) |
| Brand | STMicroelectronics |
| Architecture | 8-bit STM8 |
| Maximum Clock Speed | 16 MHz |
| Flash Memory | 16 KB (16K x 8) |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Ports | 41 |
| Product Lifecycle | Active |
| Low-Power Positioning | STM8L ultra-low-power 8-bit family |
| ADC/DMA | ADC/DMA capability identified in product description |
Key Differentiators
- Verified ultra-low-power family positioning (vs STM8L152C4T3)
- Exact target-device sourcing identity (vs STM8L152C4T6)
- Compact 48-LQFP footprint with 41 I/O ports (vs Generic 8-bit MCU alternatives)
Design Notes
Design the power tree around the verified 1.8 V to 3.6 V operating range and verify every rail against the complete datasheet. Estimated: for a regulated 3.3 V source, the absolute maximum supply margin is only 0.3 V; this is an arithmetic margin, not a datasheet rating. Do not use the estimated value as a design rating. Place local bulk and high-frequency decoupling at the MCU supply pins according to the manufacturer reference layout, and measure ripple and startup behavior on the assembled board.
Use the official 48-LQFP land pattern and pin table rather than a generic 48-pin drawing. Confirm pin 1 orientation, exposed thermal-pad requirements if applicable, and the manufacturer clearance and soldering guidance. Keep sensitive analog inputs away from switching nodes and high-current return paths. Because the verified excerpts do not include alternate-function details, treat every proposed signal-to-pin assignment as provisional until checked against the device datasheet.
Do not confuse an STM8L151 device with STM8L152 merely because both are 8-bit, 16 MHz, 16 KB Flash parts in related listings. Firmware peripherals, package details, and ordering-code suffixes may differ. Also do not infer a drop-in replacement from a distributor cross-reference result: require an exact package, pin map, electrical limits, memory layout, and peripheral-level migration review before changing a released design.
For sensor or LCD designs, define the signal path from the source to the MCU pin and budget noise, capacitance, and timing margin. ADC performance depends on source impedance, sampling time, reference quality, and layout; none of those values is supplied in the verified excerpts. Use short traces, a quiet analog return path, and an appropriate reference network, then validate conversion repeatability across the intended voltage and temperature range.
Compliance Information
The supplied verified data confirms an active STMicroelectronics product and a 48-LQFP package but does not provide RoHS, REACH, lead-free, halogen-free, AEC-Q100, or conflict-minerals declarations. AEC-Q100 is marked not_applicable because the verified product data does not identify an automotive qualification claim.