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STMicroelectronics STM8L151K6T6TR
- Part No.:
- STM8L151K6T6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM8L151K6T6TR.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,906
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Product details
Overview
STM8L151K6T6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 KB Flash, 1 KB data EEPROM with ECC, 2 KB RAM, a 12-bit ADC (1 Msps, 25 channels), dual ultra-low-power comparators, and RTC with BCD calendar. It operates from 1.65 V to 3.6 V across –40 °C to +85 °C and supports 5 low-power modes including Halt (350 nA) and Active-halt with full RTC (1.3 µA). It is used in battery-powered sensor nodes and portable medical devices requiring long-term autonomous operation.
For engineers reviewing the STM8L151K6T6TR datasheet, STM8L151K6T6TR pinout, STM8L151K6T6TR application, or STM8L151K6T6TR equivalent, key selection criteria include verified ultra-low standby current, integrated RTC with auto-wakeup, 12-bit ADC accuracy at 2.4–3.6 V VDDA, and SWIM-based non-intrusive debugging support for rapid firmware iteration in constrained environments.
Technical Context
The STM8L151K6T6TR implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz max. It integrates a clock security system, dual oscillators (1–16 MHz HSE and 32 kHz LSE), and factory-trimmed 16 MHz/38 kHz RC sources. Its reset subsystem includes programmable voltage detector (PVD) and 5-selectable BOR thresholds for robust brown-out handling.
Peripheral integration centers on ultra-low-power operation: DMA supports memory-to-peripheral transfers for ADC, DAC, SPI, I²C, USART, and timers; LCD controller is absent (K6 variant is non-LCD); capacitive sensing supports up to 16 channels for touchkey and rotary touch applications without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit STM8 Harvard core with 3-stage pipeline; enables deterministic 16 MIPS execution at 16 MHz for real-time control loops. |
| Flash / EEPROM / RAM | 32 KB Flash (RWW, ECC), 1 KB Data EEPROM (ECC), 2 KB RAM; supports safe over-the-air updates and persistent calibration storage. |
| ADC | 12-bit, 1 Msps, 25-channel SAR ADC with internal temperature sensor and reference voltage; delivers ±2 LSB INL at VDDA = 3.3 V for precision analog monitoring. |
| Low-Power Modes | Halt mode consumes 350 nA (VDD = 1.65–3.6 V); Active-halt with RTC consumes 1.3 µA; enables multi-year battery life in wake-on-event designs. |
| Timers | Two 16-bit general-purpose timers (IC/OC/PWM), one 16-bit advanced control timer (motor control), one 8-bit basic timer, plus two watchdogs (window + independent). |
| Communication | SPI (up to 8 MHz), I²C (400 kHz SMBus/PMBus™), USART (ISO 7816, IrDA); supports secure bootloader via UART and sensor network interfacing. |
| Supply Range | 1.65 V to 3.6 V operating range; allows direct use with single-cell Li-ion, LiFePO₄, or two-cell alkaline batteries without regulation. |
Pinout & Package
STM8L151K6T6TR is housed in a 32-pin LQFP package (7 × 7 mm, 0.8 mm pitch) with exposed pad for thermal enhancement. All 29 I/O pins are individually configurable with interrupt capability, and up to 16 support capacitive sensing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation; decoupling required per datasheet layout guidelines. |
| NRST | Active-low reset input | Accepts Schmitt-triggered external reset; supports programmable PVD and BOR for fail-safe initialization. |
| SWIM | Single-wire interface for debug | Enables non-intrusive programming and real-time debugging using only one pin-no JTAG overhead. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O | 29 total GPIOs; all mappable to external interrupt vectors; 50 nA ultra-low leakage per I/O in Halt mode. |
| OSC_IN / OSC_OUT | External crystal oscillator interface | Supports 1–16 MHz HSE crystal; paired with internal 32 kHz LSE for RTC independence from main clock domain. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power RTC | BCD calendar with alarm and periodic auto-wakeup from Halt mode-enables precise timekeeping with sub-µA quiescent draw. |
| Capacitive Sensing | Integrated hardware support for 16 channels; eliminates need for external touch controller IC in human-interface applications. |
| DAC | 12-bit DAC with output buffer on PB4–PB6; provides calibrated analog output for sensor biasing or LED dimming without external DAC. |
| Memory Protection | Flexible read/write protection modes for Flash and EEPROM; prevents accidental overwrite or unauthorized firmware access. |
| Unique ID | 96-bit factory-programmed unique identifier; enables device authentication, secure boot binding, and license management. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-operated gas/water meter logging consumption every 15 minutes and transmitting via NB-IoT. IC Role / Device Role / Timing Role: Primary MCU managing sensor acquisition, RTC-based scheduling, low-power sleep/wake cycles, and UART-based modem control. Use Value: 350 nA Halt current and 4.7 µs wakeup enable >10-year battery life; integrated 12-bit ADC ensures accurate pressure/flow measurement resolution. |
Use Scenario: Handheld ECG device acquiring lead-II signals, performing real-time QRS detection, and storing waveform snippets. IC Role / Device Role / Timing Role: Signal acquisition controller with ADC sampling, digital filtering, and flash-based waveform buffering. Use Value: 1 Msps ADC with internal reference and temperature sensor enables calibrated biopotential measurement; SWIM debug simplifies clinical validation firmware updates. |
| Wireless Sensor Node | Industrial Temperature Logger |
Use Scenario: LoRaWAN node measuring ambient temperature/humidity and reporting hourly to gateway. IC Role / Device Role / Timing Role: System orchestrator managing capacitive humidity sensing, RTC-triggered sampling, SPI flash logging, and LoRa transceiver control. Use Value: 16-channel capacitive sensing interface reduces BOM count; 1.3 µA Active-halt with RTC sustains years of scheduled operation on coin cell. |
Use Scenario: DIN-rail mounted logger recording temperature every 10 seconds across 4 thermistor inputs for HVAC diagnostics. IC Role / Device Role / Timing Role: Precision analog front-end controller with multi-channel ADC sequencing, EEPROM-based calibration storage, and RS-485 communication. Use Value: 1 KB ECC EEPROM guarantees integrity of sensor calibration coefficients over 20+ years; wide 1.65–3.6 V supply accommodates industrial 3.3 V rails with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8L152K6T6TR | Includes integrated LCD controller (4×28 segments); identical Flash/RAM/peripherals otherwise. | Required only when driving segment-based displays; adds ~0.5 µA static LCD bias current. | Select only if display interface is mandatory; otherwise, STM8L151K6T6TR offers lower cost and reduced complexity. |
| STM32L051K8U6 | 32-bit ARM Cortex-M0+, 64 KB Flash, 8 KB RAM, 12-bit ADC (1.14 Msps), but higher active current (210 µA/MHz vs. 195 µA/MHz). | Better suited for complex protocol stacks (BLE, USB) or larger firmware; lacks built-in capacitive sensing hardware. | Choose when 32-bit processing headroom or richer peripheral set justifies higher power and cost; not drop-in compatible. |
Compared with STM8L152K6T6TR, this part removes LCD overhead for cost-sensitive non-display applications; versus STM32L051K8U6, it trades 32-bit flexibility for proven ultra-low static current and simpler toolchain-ideal for deeply embedded, battery-constrained control tasks.
Availability
STM8L151K6T6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, and wireless sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for STM8L151K6T6TR 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, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM8L ultra-low-power MCU family targets energy-critical applications such as battery-powered IoT endpoints, portable healthcare devices, and industrial loggers where sub-microamp quiescent current and long-term reliability are design imperatives.
FAQ
What is the maximum operating frequency and corresponding power consumption?
The STM8L151K6T6TR achieves a maximum CPU frequency of 16 MHz. At this speed and VDD = 3.3 V, typical active-mode current is 195 µA/MHz plus 440 µA base consumption, totaling approximately 3.56 mA. This value is measured under specified load conditions with all peripherals disabled except core and system clocks.
Does this MCU support hardware-accelerated capacitive sensing?
Yes-STM8L151K6T6TR integrates dedicated hardware for capacitive sensing across up to 16 I/O pins, supporting touchkey, proximity, linear, and rotary touch configurations without external components or firmware-intensive polling. The sensing engine operates independently during low-power modes.
Can the internal 12-bit DAC drive external loads directly?
The integrated 12-bit DAC features an output buffer on pins PB4–PB6, enabling direct drive of resistive loads up to 50 kΩ or op-amp inputs. It does not support rail-to-rail output swing-output range is 0 to VDD, with monotonicity guaranteed across full scale per datasheet Table 52.
Is SWIM debugging supported in all low-power modes?
SWIM debugging remains functional in Run, Wait, and Low Power Run modes. It is disabled in Low Power Wait, Active-halt, and Halt modes to preserve ultra-low current; debug session must be re-established after wakeup. Full non-intrusive tracing requires SWIM-compatible tools like ST-LINK/V2-1.
STM8L151K6T6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM8L EnergyLite
- Packaging:
- Tape & Reel (TR)
- 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:
- 30
- 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 22x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8L151K6T6TR FAQ
1.How can I place an order for STM8L151K6T6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L151K6T6TR 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 STM8L151K6T6TR reliable?
The price and inventory of STM8L151K6T6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L151K6T6TR is usually 5 days.
3.What payment methods are accepted for STM8L151K6T6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L151K6T6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L151K6T6TR?
STM8L151K6T6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L151K6T6TR 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 STM8L151K6T6TR?
For technical support, including STM8L151K6T6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L151K6T6TR requirements.
6.How does Aetrix verify that STM8L151K6T6TR is sourced from the original manufacturer or authorized distributors?
All STM8L151K6T6TR 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 STM8L151K6T6TR meets industry standards.
7.What is the process for return or replacement of STM8L151K6T6TR?
All STM8L151K6T6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM8L151K6T6TR, 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 STM8L151K6T6TR part is unused and in its original packaging.
Return procedure for STM8L151K6T6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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