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STMicroelectronics STM32L152C8U6
- Part No.:
- STM32L152C8U6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32L152C8U6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
STM32L152C8U6 from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 128 KB Flash, 16 KB SRAM, 4 KB EEPROM with ECC, integrated LCD controller (up to 8×40 segments), and USB 2.0 interface. It operates from 1.65 V to 3.6 V across -40°C to +85°C, delivering 214 µA/MHz active current and 0.57 µA Stop mode power - ideal for battery-powered medical sensors and portable industrial data loggers.
For engineers reviewing the STM32L152C8U6 datasheet, STM32L152C8U6 pinout, STM32L152C8U6 application, or STM32L152C8U6 equivalent, key selection criteria include ultra-low-power run/stop modes, on-chip true EEPROM endurance (>300k cycles), dual 12-bit DACs with output buffers, 24-channel 12-bit ADC (1 Msps), and capacitive touch sensing support for human-interface devices.
Technical Context
The STM32L152C8U6 implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) managed by an ultra-safe BOR with five threshold levels and programmable voltage detector (PVD). Its clock system integrates a 32 kHz RTC oscillator with calibration, 16 MHz HSI RC (±1%), and PLL for USB 48 MHz generation.
Analog subsystem includes two independent 12-bit DACs with output buffers, a 24-channel 12-bit ADC with selectable resolution and sampling rate up to 1 Msps, and two ultra-low-power comparators with window mode and wake-up capability - all functional down to 1.8 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit, up to 32 MHz - delivers 1.25 DMIPS/MHz for deterministic real-time control in resource-constrained edge nodes. |
| Memory | 128 KB Flash with ECC, 16 KB SRAM, 4 KB true EEPROM with ECC - enables robust firmware storage, volatile data buffering, and wear-leveling-critical parameter retention. |
| Power Consumption | 0.57 µA Stop mode (16 wakeup lines), 9 µA Low-power Run mode - extends coin-cell battery life to multi-year operation in always-on sensor endpoints. |
| Analog Peripherals | 12-bit ADC (24 channels, 1 Msps), 2×12-bit DAC with buffers, 2×ultra-low-power comparators - supports precision signal acquisition, analog output generation, and threshold-triggered wake-up without external components. |
| Communication | 1×USB 2.0 FS, 3×USART (ISO 7816/IrDA), 2×SPI (16 Mbit/s), 2×I²C (SMBus/PMBus) - enables direct PC connectivity, smart-card interfacing, high-speed sensor bus communication, and power-management bus control. |
| Special Features | LCD controller (8×40 segments), 20-channel capacitive sensing, 96-bit unique ID, CRC unit - integrates display driving, touch UI, device identity, and data integrity verification in one die. |
Pinout & Package
STM32L152C8U6 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad. This compact, lead-free RoHS-compliant package supports high-density PCB layouts and efficient thermal dissipation in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.65–3.6 V core/analog supply rails; separate VDDA/VSSA pins ensure clean analog reference for ADC/DAC operation. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/O | Up to 37 fast I/Os (5V-tolerant on selected pins); all mappable to 16 external interrupt vectors for flexible peripheral routing and wake-up event handling. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC7, PD0, PD1 | ADC input channels | 24-channel 12-bit ADC supports single-ended/differential conversion with internal temperature sensor and VREFINT reference - eliminates need for external sensing ICs. |
| PA4, PA5 | DAC outputs | Two buffered 12-bit DAC outputs (DAC1/DAC2) with configurable trigger sources - enable precise analog waveform generation or bias voltage control without external op-amps. |
| PA11, PA12 | USB D+/D− | Dedicated full-speed USB 2.0 physical layer with internal 1.5 kΩ pull-up resistor - allows direct USB enumeration without external transceiver or pull-up circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.57 µA with 16 wakeup lines - enables rapid, deterministic wake-up from deep sleep while preserving RAM and register state for instant resumption. |
| True EEPROM with ECC | 4 KB on-chip, >300k write/erase cycles, error correction - replaces external serial EEPROM, reduces BOM count, and guarantees data integrity over 10+ years at 85°C. |
| LCD controller | Supports up to 8×40 segment drive with on-board step-up converter and contrast adjustment - drives custom segment LCDs directly without external bias generator or charge pump. |
| Capacitive touch sensing | 20-channel CTSU supporting touchkey, linear, and rotary sensors - enables intuitive user interfaces with <1 µA standby current and hardware-accelerated scanning. |
| USB 2.0 full-speed interface | Integrated PHY with 48 MHz PLL, internal pull-up, suspend/resume detection - provides certified USB connectivity with zero external components and minimal firmware overhead. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
|
Use Scenario: Continuous ECG/temperature logging with OLED/LCD display and Bluetooth LE gateway interface. IC Role / Device Role / Timing Role: Primary MCU managing analog front-end acquisition, LCD refresh timing, USB/UART firmware updates, and low-power scheduling via RTC alarm. Use Value: 0.9 µA Standby + RTC and 128 KB Flash allow firmware-over-the-air updates and 5+ year battery life using CR2032 cells. |
Use Scenario: Battery-backed electricity/water meter with pulse counting, tamper detection, and optical/IR communication port. IC Role / Device Role / Timing Role: System controller executing metrology algorithms, driving 4-digit LCD, monitoring GPIO-based reed switches, and maintaining accurate time via 32 kHz crystal. Use Value: 4 KB EEPROM stores calibration constants and billing history with ECC protection; ultra-low I/O leakage (<10 nA) prevents false tamper triggers. |
| Industrial Sensor Node | Portable Diagnostic Tool |
|
Use Scenario: Wireless vibration/temperature node deployed in factory machinery with 10-year maintenance interval. IC Role / Device Role / Timing Role: Data aggregator sampling analog sensors via 24-channel ADC, performing FFT preprocessing, and triggering RF transmission only on anomaly detection. Use Value: 214 µA/MHz efficiency and dynamic voltage scaling reduce average current to <5 µA during periodic wake-up cycles - extends primary lithium battery life beyond specification. |
Use Scenario: Handheld medical device with touch UI, analog probe inputs, and USB-C host connection for report export. IC Role / Device Role / Timing Role: Human-interface processor running capacitive touch engine, driving segmented LCD, digitizing analog signals via dual DAC/ADC, and enumerating as USB CDC device. Use Value: Integrated LCD controller and 20-channel CTSU eliminate external driver ICs; dual buffered DACs generate precise test waveforms for probe calibration. |
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 |
|---|---|---|---|
| STM32L072CZT6 | ARM Cortex-M0+, 192 KB Flash, 20 KB RAM, no LCD controller, no true EEPROM (uses Flash emulation) | Lacks integrated LCD driver and hardware EEPROM - requires external display driver and software wear-leveling for non-volatile storage. | Select when cost sensitivity outweighs LCD integration needs and Flash-based EEPROM emulation is acceptable for parameter storage. |
| STM32L432KCU6 | ARM Cortex-M4F, 256 KB Flash, 64 KB SRAM, no LCD controller, no true EEPROM, higher active current (82 µA/MHz) | Includes FPU and AES accelerator but consumes ~2.5× more active current and lacks LCD/EEPROM - better for compute-intensive tasks than ultra-low-power display systems. | Prefer for applications requiring floating-point math or cryptographic operations where display integration is handled externally and battery life is secondary to processing throughput. |
Compared with STM32L152C8U6, STM32L072CZT6 trades LCD/EEPROM integration for lower cost and smaller footprint, while STM32L432KCU6 prioritizes computational performance over sub-µA low-power modes - making the L152 optimal for display-integrated, long-life sensor endpoints.
Availability
STM32L152C8U6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial sensor nodes, and portable diagnostic tools requiring stable component supply and long-term lifecycle support.
Supply support for STM32L152C8U6 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 STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, integrated peripherals, and industrial-grade reliability - specifically optimized for energy harvesting, portable medical, and smart metering use cases.
FAQ
Does STM32L152C8U6 support USB device mode without external components?
Yes. The STM32L152C8U6 integrates a full-speed USB 2.0 PHY with internal 1.5 kΩ pull-up resistor on DP, 48 MHz PLL, and suspend/resume detection logic. No external transceiver, resistors, or crystals are required for basic USB device enumeration and CDC/DFU class operation.
What is the maximum operating temperature range for STM32L152C8U6?
The STM32L152C8U6 is rated for industrial operation from -40°C to +85°C ambient temperature. Its ultra-low-power design maintains specified current consumption and timing accuracy across this full range, with validated performance up to 105°C for select variants (not applicable to C8U6).
How many capacitive sensing channels does STM32L152C8U6 support?
The STM32L152C8U6 supports up to 20 capacitive sensing channels via its built-in Capacitive Sensing Controller (CTSU), enabling implementation of touchkeys, linear sliders, and rotary wheels with hardware-accelerated scanning and automatic drift compensation - all within 1 µA typical standby current.
Is the 4 KB EEPROM truly hardware-based or emulated in Flash?
It is true hardware EEPROM with dedicated memory array, ECC circuitry, and guaranteed endurance of >300,000 write/erase cycles and data retention exceeding 10 years at 85°C. Unlike Flash-emulated EEPROM, it supports byte-level writes, concurrent read/write operations, and zero software wear-leveling overhead.
STM32L152C8U6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- STM32L1
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, Cap Sense, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L152C8U6 FAQ
1.How can I place an order for STM32L152C8U6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L152C8U6 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 STM32L152C8U6 reliable?
The price and inventory of STM32L152C8U6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L152C8U6 is usually 5 days.
3.What payment methods are accepted for STM32L152C8U6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L152C8U6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L152C8U6?
STM32L152C8U6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L152C8U6 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 STM32L152C8U6?
For technical support, including STM32L152C8U6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L152C8U6 requirements.
6.How does Aetrix verify that STM32L152C8U6 is sourced from the original manufacturer or authorized distributors?
All STM32L152C8U6 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 STM32L152C8U6 meets industry standards.
7.What is the process for return or replacement of STM32L152C8U6?
All STM32L152C8U6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L152C8U6, 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 STM32L152C8U6 part is unused and in its original packaging.
Return procedure for STM32L152C8U6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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