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STMicroelectronics STM32L152R6T6
- Part No.:
- STM32L152R6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L152R6T6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,048
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Product details
Overview
STM32L152R6T6 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, USB 2.0 interface, and integrated LCD driver (up to 8×40 segments). It operates from 1.65–3.6 V, supports -40°C to +85°C, and delivers 214 µA/MHz active current consumption - ideal for battery-powered portable medical devices, smart utility meters, and wearable sensors.
For engineers reviewing the STM32L152R6T6 datasheet, STM32L152R6T6 pinout, STM32L152R6T6 application, or STM32L152R6T6 equivalent, key selection criteria include its 0.57 µA Stop mode current, dual 12-bit DACs with output buffers, 12-bit 1 Msps ADC with up to 24 channels, ultra-low-power comparators with wake-up capability, and hardware CRC unit for firmware integrity verification.
Technical Context
The STM32L152R6T6 implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) managed by an integrated ultra-safe BOR with five threshold levels and programmable voltage detector (PVD). Its clock system integrates a 16 MHz factory-trimmed HSI RC, 32 kHz LSE for RTC calibration, and a PLL supporting USB 48 MHz generation.
It features a memory protection unit (MPU), 7-channel DMA controller, and rich analog peripherals including temperature sensor and internal VREFINT - all functional down to 1.8 V supply. The device includes 83 fast I/Os (73 tolerant to 5 V), all mappable to 16 external interrupt vectors, enabling flexible peripheral routing in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit, up to 32 MHz - enables deterministic real-time control with 1.25 DMIPS/MHz performance. |
| Memory | 128 KB Flash (with ECC), 16 KB SRAM, 4 KB true EEPROM (with ECC) - ensures code/data reliability and non-volatile parameter storage without external components. |
| Power Consumption | 0.57 µA in Stop mode (16 wakeup lines), 9 µA in Low-power Run mode - extends battery life in intermittent-sensing applications beyond 10 years. |
| Analog Peripherals | 12-bit ADC (1 Msps, 24 channels), 2×12-bit DACs with buffers, 2×ultra-low-power comparators - supports precision sensor signal chain and analog actuator control. |
| Communication | 1×USB 2.0 FS, 3×USART, 2×SPI (16 Mbit/s), 2×I²C (SMBus/PMBus) - enables mixed wired connectivity for data logging, diagnostics, and field communication. |
| Timers & Control | 10 timers including 6×16-bit general-purpose (4×PWM/OC/IC each), 2×basic, 2×watchdogs (IWDG/WWDG) - provides precise timing, motor control, and safety-critical supervision. |
| Package | LQFP64 (10 × 10 mm, 0.5 mm pitch) - balances PCB area efficiency, thermal performance, and hand-solderability for industrial and consumer modules. |
Pinout & Package
LQFP64 package: 64-pin low-profile quad flat package, 10 × 10 mm body, 0.5 mm pitch, exposed pad for thermal enhancement. RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate analog/digital domains enable noise isolation; VDDIO2 supports 5 V-tolerant I/Os at 1.8–3.6 V core supply. |
| VSS, VSSA | Ground returns | Dedicated analog ground minimizes coupling into ADC/DAC paths; required for <1 LSB INL error in 12-bit conversions. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE7 | General-purpose I/Os | 83 total GPIOs (73 5 V-tolerant); all support external interrupts and alternate functions - simplifies peripheral multiplexing in compact layouts. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC7, PD2, PE0–PE7 | ADC input channels | 24-channel 12-bit ADC with selectable sampling time - supports simultaneous multi-sensor acquisition (e.g., temp, humidity, battery voltage). |
| PA4, PA5 | DAC outputs | Two buffered 12-bit DACs with rail-to-rail output - drive analog actuators or reference voltages without external op-amps. |
| PA11, PA12 | USB D+/D− | Integrated USB 2.0 full-speed transceiver with internal pull-ups - eliminates external PHY and reduces BOM cost for firmware updates and HID interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.57 µA with 16 wakeup lines - enables sub-microamp sleep in always-on sensing nodes while retaining RAM and register context. |
| Hardware ECC on Flash & EEPROM | Automatic error detection/correction during read/write - prevents silent corruption in long-life deployments (e.g., smart meter firmware over 15+ years). |
| LCD controller (8×40 segments) | On-chip step-up converter and contrast adjustment - drives segmented LCDs directly without external bias circuitry or charge pumps. |
| Capacitive touch sensing | 20-channel CTSU supporting touchkey, linear, and rotary sensors - enables intuitive UI in wearables and handheld instruments with no external IC. |
| Temperature sensor & VREFINT | Calibrated internal sensor (±1.5°C accuracy) and 1.22 V reference - provides self-contained system monitoring and ADC calibration without external components. |
Applications
| Portable Medical Monitor | Smart Utility Meter |
|---|---|
|
Use Scenario: Continuous ECG/SpO₂ monitoring in handheld patient monitors with coin-cell battery operation. IC Role / Device Role / Timing Role: Main system controller managing analog front-end sampling, LCD display refresh, USB data export, and RTC-based timestamping. Use Value: 0.9 µA Standby + RTC and <8 µs wakeup ensure rapid response to arrhythmia events while sustaining >5-year battery life. |
Use Scenario: Battery-backed electricity/water/gas meter with tamper detection, pulse counting, and infrared/RF communication. IC Role / Device Role / Timing Role: Primary metrology processor handling ADC sampling of current/voltage transformers, EEPROM-based tariff storage, and secure firmware updates. Use Value: 4 KB EEPROM with ECC retains billing data across 100k write cycles; 12-bit ADC achieves Class 0.5 accuracy per IEC 62053. |
| Industrial Wireless Sensor Node | Wearable Health Tracker |
|
Use Scenario: LoRaWAN-enabled environmental sensor node measuring temperature, humidity, and CO₂ in HVAC systems. IC Role / Device Role / Timing Role: Data aggregator and protocol stack executor - samples sensors via DMA, compresses data, and manages LoRa radio timing via timer-triggered SPI transfers. Use Value: 7-channel DMA offloads CPU during burst sampling; ultra-low I/O leakage (10 nA) prevents false wakeups in dusty/humid enclosures. |
Use Scenario: Fitness band with optical heart rate, accelerometer, and OLED/LCD display powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Central hub coordinating capacitive touch UI, motion sensor fusion, battery gauge ADC, and display backlight PWM. Use Value: 20-channel CTSU enables bezel-free touch controls; integrated LCD driver reduces component count by eliminating external segment drivers. |
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 |
|---|---|---|---|
| STM32L072RBT6 | ARM Cortex-M0+, 192 KB Flash, 20 KB RAM, no LCD driver, lower max clock (32 MHz same), higher Stop current (0.84 µA) | Lacks LCD controller and second DAC; suited for non-display, cost-sensitive sensor nodes | Select when LCD/touch functionality is unnecessary and Cortex-M0+ software compatibility is preferred. |
| STM32L432KCU6 | ARM Cortex-M4F, 256 KB Flash, 64 KB SRAM, no EEPROM, higher active current (80 µA/MHz), includes FPU and AES | Targets DSP-intensive tasks (e.g., FFT-based vibration analysis); lacks EEPROM and ultra-low-power Stop mode (<1 µA) | Choose for floating-point math or crypto acceleration where power budget allows >2× active current. |
Compared with STM32L152R6T6, the STM32L072RBT6 trades LCD/DAC/ECC EEPROM for lower gate count and legacy toolchain support, while the STM32L432KCU6 upgrades compute capability at the expense of ultra-deep sleep efficiency and non-volatile storage integration.
Availability
STM32L152R6T6 is available at Aetrix Electronics and suitable for portable medical monitors, smart utility meters, and industrial wireless sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for STM32L152R6T6 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 multi-year battery life, robust memory integrity, and integrated analog peripherals - optimized for metering, healthcare, and IoT edge nodes.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for the STM32L152R6T6?
The STM32L152R6T6 operates up to 32 MHz across its full 1.65–3.6 V supply range, enabled by dynamic voltage scaling. At 32 MHz, minimum VDD is 2.4 V per datasheet Section 6.3.1; below that, frequency must be reduced (e.g., 16 MHz at 1.8 V). This ensures consistent timing margins across battery discharge profiles.
Does the STM32L152R6T6 support hardware encryption or secure boot features?
No, the STM32L152R6T6 does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security (e.g., ARM TrustZone not present) and external secure elements for key storage. For hardware crypto, consider STM32L4x or STM32H5x families.
Can the internal 32 kHz LSE oscillator be calibrated, and what is its typical accuracy?
Yes, the LSE oscillator supports digital calibration via the RCC_BDCR register's CAL[4:0] bits, allowing ±100 ppm fine-tuning. Factory-trimmed accuracy is ±20 ppm at 25°C; after calibration and over -40°C to +85°C, stability reaches ±100 ppm - sufficient for RTC timekeeping with <2 sec/day drift.
How many I/O pins are 5 V tolerant, and under what conditions?
73 of the 83 GPIOs are 5 V tolerant when VDD is ≥1.65 V and the input voltage does not exceed VDD + 4 V. This applies to all pins except those dedicated to analog functions (e.g., ADC inputs, DAC outputs, VREF+) and USB D+/D−. Tolerance is verified per IEC 61000-4-2 Level 4 (8 kV contact discharge).
STM32L152R6T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 51
- 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 20x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L152R6T6 FAQ
1.How can I place an order for STM32L152R6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L152R6T6 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 STM32L152R6T6 reliable?
The price and inventory of STM32L152R6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L152R6T6 is usually 5 days.
3.What payment methods are accepted for STM32L152R6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L152R6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L152R6T6?
STM32L152R6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L152R6T6 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 STM32L152R6T6?
For technical support, including STM32L152R6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L152R6T6 requirements.
6.How does Aetrix verify that STM32L152R6T6 is sourced from the original manufacturer or authorized distributors?
All STM32L152R6T6 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 STM32L152R6T6 meets industry standards.
7.What is the process for return or replacement of STM32L152R6T6?
All STM32L152R6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L152R6T6, 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 STM32L152R6T6 part is unused and in its original packaging.
Return procedure for STM32L152R6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L152R6T6 Tags
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