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STMicroelectronics STM8L151C6T3
- Part No.:
- STM8L151C6T3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8L151C6T3.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,498
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Product details
Overview
STM8L151C6T3 from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 KB Flash, 1 KB data EEPROM with ECC, 2 KB RAM, 12-bit ADC (1 Msps, 25 channels), 12-bit DAC, two ultra-low-power comparators, RTC with BCD calendar and alarm, and up to 41 I/Os. It operates from 1.65 V to 3.6 V across –40 °C to +85 °C and targets battery-powered sensor nodes and portable medical devices requiring sub-µA halt-mode operation.
For engineers reviewing the STM8L151C6T3 datasheet, STM8L151C6T3 pinout, STM8L151C6T3 application, or STM8L151C6T3 equivalent, key selection criteria include active-halt current (1.3 µA with full RTC), fast wakeup time (4.7 µs from Halt), capacitive touch support (16 channels), SWIM debug interface, and LQFP48 package compatibility for industrial-grade layout stability.
Technical Context
The STM8L151C6T3 implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. It integrates dual clock domains: high-speed (1–16 MHz HSE or 16 MHz factory-trimmed RC) and low-speed (32 kHz LSE or 38 kHz RC), managed by a clock security system that triggers reset on oscillator failure.
Its power architecture supports five distinct low-power modes-Wait, Low Power Run (5.1 µA), Low Power Wait (3 µA), Active-Halt with RTC (1.3 µA), and Halt (350 nA)-with per-pin leakage as low as 50 nA and guaranteed 4.7 µs wakeup latency from Halt mode using internal RC or external crystal sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit STM8 Harvard core with 3-stage pipeline; enables deterministic interrupt latency and efficient code density for resource-constrained firmware. |
| Max Clock Frequency | 16 MHz; delivers 16 CISC MIPS peak performance while maintaining ultra-low active current (195 µA/MHz + 440 µA). |
| Halt Mode Current | 350 nA at 3.0 V; enables multi-year battery life in infrequently awakened sensor endpoints without external power gating. |
| ADC Resolution & Speed | 12-bit, up to 1 Msps across 25 channels; includes integrated temperature sensor and internal reference for self-calibrated measurements. |
| DAC Output | 12-bit with output buffer; supports precise analog waveform generation or programmable biasing on PB4–PB6 pins. |
| RTC Functionality | BCD calendar with alarm and auto-wakeup; maintains accurate timekeeping during Active-Halt mode using 32 kHz LSE crystal. |
| Capacitive Sensing | 16-channel hardware-accelerated touch sensing; enables robust touchkey, proximity, linear, and rotary UI without CPU overhead. |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 certified, suitable for reflow soldering and industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main digital supply rail (1.65–3.6 V); decoupling required within 10 mm of pin for stable low-power operation. |
| VSS | Ground reference | Digital ground return; must be connected to low-impedance plane to minimize noise coupling into ADC/DAC paths. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2–VDD logic levels and supports external debounced pushbutton or supervisor IC. |
| SWIM | Single-wire interface for debug | Non-intrusive programming and real-time debugging via dedicated pin; requires no additional UART or JTAG resources. |
| PA0–PA7 | General-purpose I/O bank A | Up to 8 mappable GPIOs with interrupt capability; PA0 supports high-sink LED driver (20 mA) for direct indicator control. |
| PB0–PB7 | General-purpose I/O bank B | Includes DAC outputs (PB4–PB6), USART TX/RX (PB1/PB2), and I²C SCL/SDA (PB3/PB4) with SMBus timing compliance. |
| PC0–PC7 | General-purpose I/O bank C | Supports timer capture/compare (PC0–PC3), ADC inputs (PC0–PC5), and SPI signals (PC3–PC5) with configurable slew rate. |
| PD0–PD7 | General-purpose I/O bank D | Includes RTC_ALARM (PD0), LCD segments (not used in STM8L151C6T3), and additional ADC channels (PD0–PD3). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power RTC | Retains calendar, alarm, and periodic wakeup in Active-Halt mode at 1.3 µA-enables time-triggered sensor sampling without MCU wake. |
| Fault-tolerant clock system | Dual oscillators (HSE/LSE) with clock security system; detects and recovers from clock failure via automatic switch to backup RC source. |
| Memory protection | Flexible read/write protection for Flash and EEPROM; prevents accidental overwrite or unauthorized firmware access in field-deployed units. |
| Hardware capacitive sensing | 16-channel touch controller with built-in charge-transfer measurement; eliminates need for external touch IC and reduces BOM count. |
| DMA-assisted peripherals | 4-channel DMA supporting ADC, DAC, SPI, I²C, USART, and timers; offloads data movement to reduce CPU load and power consumption. |
Applications
| Smart Utility Meter | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-operated gas/water meter logging flow data hourly and transmitting via LPWAN. IC Role / Device Role / Timing Role: Primary system controller managing sensor acquisition, RTC-based scheduling, secure data storage, and low-power radio interface timing. Use Value: 350 nA Halt mode extends 10-year battery life; 12-bit ADC ensures ±0.5% flow measurement accuracy under varying temperature conditions. |
Use Scenario: Wearable ECG patch recording heart activity continuously for 72 hours on coin-cell battery. IC Role / Device Role / Timing Role: Signal acquisition hub synchronizing analog front-end, real-time QRS detection, and flash-based waveform buffering. Use Value: 1.3 µA Active-Halt with RTC enables scheduled deep-sleep intervals between 10-second ECG bursts; 12-bit ADC captures 5 µV resolution bio-signals. |
| Industrial Sensor Node | Home Appliance Control |
Use Scenario: Wireless temperature/humidity node deployed in HVAC ducts with 5-year maintenance interval. IC Role / Device Role / Timing Role: Environmental data aggregator with capacitive touch UI, local decision logic, and BLE advertisement timing control. Use Value: 16-channel capacitive sensing enables sealed, waterproof control panel; ultra-low leakage (50 nA/I/O) prevents false triggers in high-impedance environments. |
Use Scenario: Smart oven control board managing heating elements, display, and user interface with energy monitoring. IC Role / Device Role / Timing Role: Main application processor handling PWM-controlled triac drivers, LCD segment driving (via external driver), and safety-critical watchdog supervision. Use Value: Dual watchdogs (window + independent) ensure fail-safe shutdown if firmware hangs; 32 KB Flash accommodates OTA update partitioning and safety-certified bootloader. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8L052C6T3 | 16 KB Flash, no data EEPROM, identical low-power modes and peripheral set except missing DAC and second comparator. | Suitable for cost-sensitive sensor nodes where EEPROM persistence and DAC are unnecessary. | Select when firmware size ≤16 KB and calibration data can be stored externally or in Flash with wear-leveling. |
| EFM8LB12F32ES1-QFP48 | Silicon Labs 8051 core; 32 KB Flash, 2.25 KB RAM, 12-bit ADC (1 Msps), but higher Halt current (1.1 µA vs. 350 nA) and no hardware touch sensing. | Better suited for mixed-signal applications needing higher RAM or USB interface (requires external PHY). | Prefer when legacy 8051 toolchain familiarity or integrated USB transceiver is required; avoid if sub-µA Halt is mandatory. |
Compared with STM8L052C6T3, the STM8L151C6T3 adds ECC-protected EEPROM and dual DAC/comparator for precision analog control; versus EFM8LB12F32ES1, it delivers 3× lower Halt current and native capacitive touch-critical for multi-year battery life and intuitive UI in compact form factors.
Availability
STM8L151C6T3 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial sensor nodes, and home appliance control systems requiring stable component supply across extended product lifecycles.
Supply support for STM8L151C6T3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive semiconductors since 1987.
The STM8L ultra-low-power MCU family targets energy-constrained applications including battery-powered IoT endpoints, portable healthcare devices, and industrial monitoring systems where sub-µA sleep currents and robust analog integration are essential.
FAQ
What is the minimum supply voltage for reliable operation in Halt mode?
The STM8L151C6T3 maintains full functionality-including RTC and memory retention-in Halt mode down to 1.65 V. Below this threshold, the ultra-safe BOR circuit asserts reset to prevent undefined behavior; operation at 1.65 V yields 350 nA typical current draw with all clocks disabled except LSE-driven RTC.
Does the device support true hardware-based capacitive touch without external components?
Yes-the STM8L151C6T3 integrates a dedicated hardware touch sensing controller supporting up to 16 channels. It performs charge-transfer measurement autonomously, enabling touchkey, proximity, linear, and rotary sensing without external ICs, resistors, or calibration firmware overhead.
Can the 12-bit DAC output drive a 1 kΩ load with monotonicity preserved?
Yes-the DAC output buffer is specified to drive loads ≥1 kΩ while maintaining monotonicity and ±1 LSB INL across the full 0–VDD range. At 3.3 V supply, it delivers ±0.5 mV offset error and supports continuous output updates at up to 100 kSPS without external op-amp buffering.
Is SWIM debugging compatible with production firmware and secure boot configurations?
SWIM operates independently of the application code and remains functional even with read-out protection enabled, provided the option bytes permit debug access. Production units can retain SWIM capability for field diagnostics while enforcing Flash write protection and bootloader signature verification.
STM8L151C6T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8L EnergyLite
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, IR, POR, PWM, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 25x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8L151C6T3 FAQ
1.How can I place an order for STM8L151C6T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L151C6T3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM8L151C6T3 reliable?
The price and inventory of STM8L151C6T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L151C6T3 is usually 5 days.
3.What payment methods are accepted for STM8L151C6T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L151C6T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L151C6T3?
STM8L151C6T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L151C6T3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM8L151C6T3?
For technical support, including STM8L151C6T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L151C6T3 requirements.
6.How does Aetrix verify that STM8L151C6T3 is sourced from the original manufacturer or authorized distributors?
All STM8L151C6T3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM8L151C6T3 meets industry standards.
7.What is the process for return or replacement of STM8L151C6T3?
All STM8L151C6T3 units undergo pre-shipment inspection (PSI). If there is an issue with STM8L151C6T3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM8L151C6T3 part is unused and in its original packaging.
Return procedure for STM8L151C6T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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