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STMicroelectronics STM32L152QCH6

Name: STM32L152QCH6
Brand: STMicroelectronics
SKU: STM32L152QCH6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32L152QCH6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 132-UFBGA

Datasheet:: STM32L152QCH6.pdf

Description:: IC MCU 32BIT 256KB FLSH 132UFBGA

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Product details

Overview

STM32L152QCH6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller with 256 KB Flash, 32 KB SRAM, 8 KB EEPROM, integrated LCD driver, USB 2.0 interface, and dual 12-bit ADC/DAC - deployed in battery-powered medical sensors, portable industrial meters, and smart utility meters requiring sub-µA standby operation.

For engineers reviewing the STM32L152QCH6 datasheet, STM32L152QCH6 pinout, STM32L152QCH6 application, or STM32L152QCH6 equivalent, key selection criteria include verified 0.475 µA stop mode current, 12-bit ADC with up to 40 channels at 1 Msps, LCD segment drive capability (8×40), USB 2.0 full-speed support with internal 48 MHz PLL, and 102 5V-tolerant I/Os with 16 external interrupt vectors.

Technical Context

The STM32L152QCH6 implements dynamic voltage scaling across six low-power modes (Run, Sleep, Low-power Run, Low-power Sleep, Stop, Standby), enabling precise power/performance trade-offs - e.g., 11 µA Low-power Run mode at 32 kHz CPU clock versus 230 µA/MHz at 32 MHz. Its memory protection unit (MPU) enforces secure execution boundaries for firmware partitioning.

It integrates dual ultra-low-power comparators with window mode and wake-up capability, two rail-to-rail operational amplifiers configurable as PGA or filter stages, and a dedicated LCD controller supporting contrast adjustment, blinking, and step-up converter - all operable 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 resource-constrained edge nodes.
Memory	256 KB Flash with ECC + 32 KB SRAM + 8 KB true EEPROM with ECC - enables robust firmware updates and nonvolatile parameter storage without external components.
Low-Power Performance	0.475 µA Stop mode (16 wakeup lines); 1.15 µA Standby + RTC - supports >10-year battery life in coin-cell–powered IoT endpoints.
Analog Peripherals	12-bit ADC (1 Msps, 40 ch), 12-bit DAC (2 ch, buffered), 2× op-amps, 2× ultra-low-power comparators - supports sensor signal conditioning and closed-loop analog control.
Communication	1× USB 2.0 FS (48 MHz PLL), 3× USART, up to 8× SPI (2× I2S), 2× I2C (SMBus/PMBus) - enables mixed wired connectivity for diagnostics, data logging, and host interfacing.
I/O & Timing	102 5V-tolerant GPIOs, 11 timers (including 32-bit, 6× 16-bit PWM-capable), CRC unit, 96-bit unique ID - provides flexible peripheral routing and hardware-accelerated data integrity verification.
LCD Support	Integrated LCD controller driving up to 8×40 segments with contrast control and step-up converter - eliminates external display drivers in portable instrumentation.

Pinout & Package

LQFP144 (20 × 20 mm) package with 144 pins, 102 of which are 5V-tolerant general-purpose I/Os mappable to 16 external interrupt vectors; includes dedicated V_DDA/V_SSA analog supplies, LCD segment/common pins, USB D+/D−, and multiple crystal/oscillator inputs (HSE, LSE, HSI, LSI, MSI).

Pin/Terminal	Circuit Role	Design Meaning
V_DD, V_SS	Main digital power/ground	1.65–3.6 V supply domain; decoupling required per datasheet layout guidelines to maintain low-noise operation in ultra-low-power modes.
V_DDA, V_SSA	Analog power/ground	Independent 1.8–3.6 V analog domain for ADC/DAC/comp/op-amp - isolation prevents digital noise coupling into precision analog paths.
PA0–PA15, PB0–PB15, etc.	General-purpose I/O	102 pins support 5V tolerance, alternate functions (USART/SPI/I2C/USB), and external interrupts - enables direct connection to legacy peripherals without level shifters.
PC13–PC15	RTC oscillator pins	Drive 32.768 kHz crystal for autonomous RTC operation in Stop/Standby modes - critical for time-stamped logging during deep sleep.
PA11/PA12	USB D+/D−	Dedicated full-speed USB transceiver pins with internal pull-ups - enables HID/class-compliant device implementation without external PHY.
VLCD	LCD voltage supply	Input for internal step-up converter; sets LCD bias voltage - allows single-supply operation while maintaining display contrast across battery discharge.

Key Features

Feature	Design Value
Ultra-low-power stop mode	0.475 µA with 16 wakeup lines - extends battery life in intermittent-sensing applications such as environmental monitors.
Integrated LCD controller	Drives 8×40 segments with programmable contrast and blinking - reduces BOM cost and PCB area vs. external display controllers.
Dual 12-bit DAC with buffers	2 independent voltage outputs with rail-to-rail swing - enables simultaneous analog stimulus generation for sensor calibration or actuator control.
Capacitive touch sensing	Supports up to 23 channels via built-in CSD peripheral - allows direct integration of touch UI without external ICs in handheld devices.
Pre-programmed USB bootloader	Factory-loaded firmware enabling field firmware updates over USB without debugger - simplifies maintenance for deployed edge devices.

Applications

Portable Medical Sensor

Smart Utility Meter

Use Scenario: Wearable ECG patch acquiring analog biopotentials, performing on-device filtering, and transmitting via USB to clinical gateway.

IC Role / Device Role / Timing Role: Central MCU executing signal processing, managing ultra-low-power sleep/wakeup cycles, and driving integrated LCD for local status display.

Use Value: On-chip op-amps and 12-bit ADC eliminate external signal-conditioning circuitry; 0.475 µA Stop mode enables multi-week operation on CR2032.

Use Scenario: Battery-backed electricity meter logging consumption data hourly and transmitting via optical port or RF module during wake periods.

IC Role / Device Role / Timing Role: Primary controller handling metrology calculations, RTC-based timestamping, EEPROM-based tamper logs, and LCD display of kWh readings.

Use Value: 8 KB EEPROM with ECC ensures reliable long-term storage of billing data; 1.15 µA Standby+RTC sustains 10+ years of calendar timekeeping.

Industrial Handheld Tester

Wireless Sensor Node

Use Scenario: Ruggedized field tester measuring temperature, humidity, and voltage with local display and USB configuration interface.

IC Role / Device Role / Timing Role: System-on-chip integrating analog front-end, LCD driver, USB communication, and capacitive touch buttons.

Use Value: 102 5V-tolerant I/Os simplify connection to diverse sensors; integrated LCD controller reduces component count and improves display reliability.

Use Scenario: LoRaWAN node sampling ambient air quality (CO₂, VOC) every 5 minutes, then entering deep sleep until next acquisition.

IC Role / Device Role / Timing Role: Low-power host managing sensor interfaces, ADC conversions, cryptographic signing, and radio wake-up coordination.

Use Value: 11 µA Low-power Run mode enables efficient background processing; ultra-low I/O leakage (10 nA) prevents parasitic discharge of energy-harvesting 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
STM32L152RCT6	LQFP64 package (64-pin), 256 KB Flash, 32 KB SRAM, but no LCD controller and only 51 GPIOs.	Suitable for space-constrained designs without display requirements; lacks segment driving capability.	Select when LCD functionality is unnecessary and PCB footprint must be minimized.
STM32L432KCU6	Cortex-M4 core (FPU), 256 KB Flash, 64 KB SRAM, no LCD, lower typical stop current (100 nA), but no EEPROM.	Better for floating-point math (e.g., FFT-based analytics); requires external nonvolatile storage for parameter retention.	Choose for enhanced compute density where EEPROM is replaceable by external FRAM or flash.

Compared with STM32L152RCT6, the QCH6 adds LCD support and 51 extra I/Os in LQFP144; versus STM32L432KCU6, it trades FPU and lower stop current for integrated EEPROM and LCD - making it optimal for display-equipped, long-life, parameter-rich metering applications.

Availability

STM32L152QCH6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld testers, and wireless sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for STM32L152QCH6 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 analog products for industrial, automotive, and consumer markets.

The STM32L1 series targets ultra-low-power embedded applications demanding multi-year battery life, integrated analog peripherals, and robust memory integrity - optimized for metering, wearables, and environmental monitoring systems.

FAQ

What is the maximum operating frequency and associated power consumption of the STM32L152QCH6?

The STM32L152QCH6 operates up to 32 MHz with a typical current draw of 230 µA/MHz in Run mode. At full speed, total active current is approximately 7.4 mA (230 µA × 32.2 MHz), verified under 3.3 V supply and code execution from Flash. Dynamic voltage scaling allows reducing core voltage to lower frequencies, cutting power proportionally - e.g., 11 µA at 32 kHz in Low-power Run mode.

Does the STM32L152QCH6 support hardware encryption or secure boot features?

No, the STM32L152QCH6 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security implementations and its memory protection unit (MPU) for basic privilege separation. For certified secure applications, ST recommends the STM32L4+ or STM32H5 series, which integrate TRNG, AES-256, and secure firmware install (SFI) capabilities.

Can the integrated LCD controller drive segment-based displays without external components?

Yes - the STM32L152QCH6's LCD controller drives up to 8 commons and 40 segments directly using internal charge pump (VLCD input) and software-configurable bias/voltage settings. No external bias generator or segment drivers are needed, though external capacitors (as specified in Section 6.3.22 of DS10262) are required for the step-up converter to stabilize VLCD output.

What debug interfaces are supported, and is SWD sufficient for full development?

The STM32L152QCH6 supports Serial Wire Debug (SWD), JTAG, and Embedded Trace Macrocell (ETM). SWD is fully sufficient for programming, real-time debugging, and profiling - using standard ST-LINK/V2-1 or compatible probes. ETM enables instruction trace capture for complex timing analysis, while JTAG remains available for boundary scan or multi-core debugging scenarios.

STM32L152QCH6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 132-UFBGA

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:: 109

Program Memory Size:: 256KB (256K x 8)

Program Memory Type:: FLASH

EEPROM Size:: 8K x 8

RAM Size:: 32K x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 3.6V

Data Converters:: A/D 40x12b; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32L152QCH6 FAQ

1.How can I place an order for STM32L152QCH6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32L152QCH6 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 STM32L152QCH6 reliable?

The price and inventory of STM32L152QCH6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L152QCH6 is usually 5 days.

3.What payment methods are accepted for STM32L152QCH6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L152QCH6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32L152QCH6?

STM32L152QCH6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32L152QCH6 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 STM32L152QCH6?

For technical support, including STM32L152QCH6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L152QCH6 requirements.

6.How does Aetrix verify that STM32L152QCH6 is sourced from the original manufacturer or authorized distributors?

All STM32L152QCH6 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 STM32L152QCH6 meets industry standards.

7.What is the process for return or replacement of STM32L152QCH6?

All STM32L152QCH6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L152QCH6, 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 STM32L152QCH6 part is unused and in its original packaging.

Return procedure for STM32L152QCH6:

1.Submit a request within 90 days.

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

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