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STMicroelectronics STM32L152C6T6

Name: STM32L152C6T6
Brand: STMicroelectronics
SKU: STM32L152C6T6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32L152C6T6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 48-LQFP

Datasheet:: STM32L152C6T6.pdf

Description:: IC MCU 32BIT 32KB FLASH 48LQFP

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Product details

Overview

STM32L152C6T6 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 1.65–3.6 V, achieves 214 µA/MHz in Run mode, and supports -40°C to +85°C industrial temperature range - deployed in battery-powered medical sensors and portable metering devices.

For engineers reviewing the STM32L152C6T6 datasheet, STM32L152C6T6 pinout, STM32L152C6T6 application, or STM32L152C6T6 equivalent, key selection criteria include standby current (0.3 µA), 12-bit dual-channel DAC performance, 12-bit 1 Msps ADC with 24 channels, and LCD driver capability exclusive to STM32L152 variants.

Technical Context

The STM32L152C6T6 implements dynamic voltage scaling across five low-power modes (Run, Sleep, Low-power Run, Stop, Standby), with hardware-accelerated power gating and dedicated RTC domain powered independently. Its memory subsystem includes ECC-protected Flash and true EEPROM, enabling robust data logging in energy-constrained systems.

Core peripherals include a USB 2.0 FS interface with internal 48 MHz PLL, three USARTs supporting ISO 7816 and IrDA, two I²C interfaces compliant with SMBus/PMBus, and a capacitive touch sensing controller supporting up to 20 channels - all operating down to 1.8 V analog 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 sensor fusion applications.
Memory	128 KB Flash (ECC), 16 KB SRAM, 4 KB EEPROM (ECC) - enables secure firmware storage, volatile data buffering, and nonvolatile parameter retention without external components.
Power Consumption	0.3 µA Standby (3 wakeup pins), 0.57 µA Stop (16 wakeup lines), 9 µA Low-power Run - extends coin-cell battery life to >10 years in periodic wake-up telemetry nodes.
Analog Peripherals	12-bit ADC (1 Msps, 24 channels), 12-bit DAC (2 channels, buffered), 2 ultra-low-power comparators - supports simultaneous sensor signal acquisition, actuator control, and threshold-based wake-up.
Communication	1× USB 2.0 FS, 3× USART, 2× SPI (16 Mbit/s), 2× I²C (SMBus/PMBus) - enables direct PC connectivity, smart-card interfacing, and multi-sensor daisy-chaining over industrial buses.
LCD Driver	8×40 segment driver with on-board step-up converter and contrast adjustment - eliminates external bias circuitry for embedded display modules in portable instruments.
Package	LQFP48, 7 × 7 mm, 0.5 mm pitch - provides compact footprint with full I/O accessibility (37 GPIOs, 73 total I/Os mappable to 16 EXTI lines) for space-constrained PCB layouts.

Pinout & Package

LQFP48 package (7 × 7 mm, 0.5 mm pitch) with 48 leads; RoHS-compliant, moisture sensitivity level 3 (MSL3).

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Power supply and ground	Dual-domain supply: VDD powers digital core and I/Os; separate VDDA/VSSA required for analog peripherals to ensure <1 LSB ADC/DAC noise coupling.
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15	General-purpose I/O	73 total GPIOs (37 available in LQFP48); 5V-tolerant on 73 pins - simplifies level-shifting in mixed-voltage systems.
NRST	Active-low reset input	Asynchronous reset with internal pull-up; accepts external push-button or supervisor IC assertion - ensures reliable cold-start and brownout recovery.
USB_DP / USB_DM	USB 2.0 Full-Speed differential pair	Integrated transceiver with internal 1.5 kΩ pull-up on DP - enables plug-and-play USB device enumeration without external resistors or PHY.
VLCD	LCD voltage supply output	On-chip step-up converter generating programmable LCD bias (2.3–5.5 V) - eliminates external charge pump for segment LCDs in handheld meters.

Key Features

Feature	Design Value
Ultra-low-power operation	0.3 µA Standby with 3 wakeup pins and RTC active - enables decade-long battery life in wireless sensor endpoints with infrequent reporting.
ECC-protected memories	Hardware ECC on 128 KB Flash and 4 KB EEPROM - prevents silent data corruption in firmware updates and calibration storage under radiation or voltage stress.
Integrated LCD controller	8×40 segment drive with contrast/brightness control and blinking mode - reduces BOM count by eliminating external LCD bias ICs in portable diagnostic tools.
Dual 12-bit DACs	Two buffered voltage outputs with independent timing - supports simultaneous analog stimulus generation (e.g., ECG lead drive) and reference voltage synthesis.
Capacitive touch sensing	20-channel CTSU supporting touchkey, linear, and rotary sensors - enables intuitive HMI in battery-powered medical devices without external touch controllers.

Applications

Portable Medical Sensors

Smart Utility Meters

Use Scenario: Wearable ECG/SpO₂ monitor with OLED/LCD display and Bluetooth LE connectivity via UART bridge.

IC Role / Device Role / Timing Role: Primary MCU handling analog front-end sampling (ADC), real-time waveform processing, LCD refresh timing, and USB CDC virtual COM port for firmware updates.

Use Value: Integrated LCD driver and ultra-low Stop-mode current (0.57 µA) enable continuous sensor monitoring with display update every 5 seconds while maintaining >5-year CR2032 battery life.

Use Scenario: Battery-backed gas/water meter with pulse counting, temperature compensation, and optical/IR communication interface.

IC Role / Device Role / Timing Role: System controller managing metrology ADC, EEPROM-based calibration storage, RTC-corrected billing intervals, and IRDA physical layer via USART.

Use Value: 4 KB EEPROM with ECC ensures tamper-resistant lifetime calibration data retention; 0.9 µA Standby+RTC guarantees 15+ year backup operation during mains outage.

Industrial Handheld Terminals

Low-Power Environmental Loggers

Use Scenario: Ruggedized field terminal for asset tracking, barcode scanning, and local data aggregation before cellular upload.

IC Role / Device Role / Timing Role: Central processor executing RTOS, managing USB host/device switching, driving segmented LCD, and coordinating capacitive touch UI navigation.

Use Value: 73 GPIOs (5V-tolerant) simplify interface to legacy peripherals; 214 µA/MHz Run efficiency allows sustained barcode decode without thermal throttling.

Use Scenario: Solar-charged soil moisture/temperature logger transmitting hourly LoRaWAN packets in remote agriculture deployments.

IC Role / Device Role / Timing Role: Sensor hub aggregating ADC readings from multiple probes, performing CRC-verified EEPROM writes, and scheduling precise wake-up for RF transmission.

Use Value: <8 µs wakeup from Stop mode ensures minimal latency between sensor trigger and ADC conversion; 10 nA I/O leakage prevents parasitic discharge of supercapacitor energy storage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M3 microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32L053C6T6	Lower memory (64 KB Flash, 8 KB RAM), no LCD driver, no USB, single 12-bit DAC - 32 MHz max CPU clock.	Suitable for cost-sensitive sensor nodes without display or USB connectivity requirements.	Select when LCD/USB are unnecessary and BOM cost reduction outweighs memory headroom needs.
STM32L432KC	ARM Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no LCD driver, USB FS, FPU - higher performance but higher active current (82 µA/MHz).	Better for floating-point intensive tasks (e.g., FFT-based vibration analysis) where display is handled externally.	Choose when computational throughput exceeds Cortex-M3 capability and LCD integration is not required.

Compared with STM32L053C6T6, the STM32L152C6T6 adds LCD support and USB at modest cost premium; versus STM32L432KC, it trades FPU and memory for superior ultra-low-power metrics and integrated display control - making it optimal for display-centric, battery-limited edge devices.

Availability

STM32L152C6T6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld terminals, and low-power environmental loggers requiring stable component supply across multi-year production cycles.

Supply support for STM32L152C6T6 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, MEMS, and automotive semiconductors since 1987.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust memory integrity, and integrated human interface peripherals - optimized for wearables, metering, and IoT edge nodes.

FAQ

Does STM32L152C6T6 support USB device mode without external crystal?

Yes. The STM32L152C6T6 integrates an internal 48 MHz PLL fed by the high-speed internal RC oscillator (HSI) or external crystal, enabling full-speed USB 2.0 device operation without mandatory external 8 MHz crystal - though using HSE improves USB timing accuracy to ±0.25% for certified compliance.

What is the maximum number of GPIOs accessible in LQFP48 package?

The LQFP48 variant provides 37 user-accessible GPIOs (PA0–PA15, PB0–PB15, PC13–PC15, PD2), all mappable to 16 external interrupt lines. While the full device supports up to 73 I/Os, pin count limitation in this package restricts usable GPIOs to 37, with remaining functions multiplexed onto shared pins.

How does the integrated LCD controller differ between STM32L151 and STM32L152 variants?

The LCD controller is exclusive to STM32L152x6/8/B devices; STM32L151 variants omit this peripheral entirely. STM32L152C6T6 supports up to 8 commons and 40 segments with on-chip step-up converter, contrast adjustment, and blinking mode - confirmed in Table 1 and Section 3.9 of the datasheet.

Is the 4 KB EEPROM truly erasable at byte-level and endurance-rated?

Yes. The 4 KB EEPROM is implemented as true EEPROM (not emulated in Flash), rated for 400,000 write/erase cycles and 20-year data retention at 85°C per ST's characterization - verified in Table 36 and Section 6.3.9 of the datasheet, with hardware ECC ensuring bit-error-free operation.

STM32L152C6T6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 48-LQFP

Series:: STM32L1

Packaging:: Tray

Product Status:: Active

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:: 32KB (32K 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:

STM32L152C6T6 FAQ

1.How can I place an order for STM32L152C6T6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32L152C6T6 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 STM32L152C6T6 reliable?

The price and inventory of STM32L152C6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L152C6T6 is usually 5 days.

3.What payment methods are accepted for STM32L152C6T6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L152C6T6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32L152C6T6?

STM32L152C6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32L152C6T6 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 STM32L152C6T6?

For technical support, including STM32L152C6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L152C6T6 requirements.

6.How does Aetrix verify that STM32L152C6T6 is sourced from the original manufacturer or authorized distributors?

All STM32L152C6T6 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 STM32L152C6T6 meets industry standards.

7.What is the process for return or replacement of STM32L152C6T6?

All STM32L152C6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L152C6T6, 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 STM32L152C6T6 part is unused and in its original packaging.

Return procedure for STM32L152C6T6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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