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STMicroelectronics STM32L152RDT6
- Part No.:
- STM32L152RDT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L152RDT6.pdf
- Description:
- IC MCU 32BIT 384KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,052
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Product details
Overview
STM32L152RDT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller featuring 384 KB Flash, 48 KB SRAM, 12 KB EEPROM with ECC, integrated LCD driver (8×40 segments), and USB 2.0 interface. It operates from 1.65–3.6 V across –40°C to +105°C and delivers 33.3 DMIPS at up to 32 MHz, targeting battery-powered portable instrumentation and smart sensors.
For engineers reviewing the STM32L152RDT6 datasheet, STM32L152RDT6 pinout, STM32L152RDT6 application, or STM32L152RDT6 equivalent, key selection criteria include ultra-low-power mode current (0.475 µA Stop mode), 12-bit dual-channel DAC with buffers, 12-bit 1 Msps ADC (up to 40 channels), 3 op-amps, and 116 fast I/Os - all in LQFP64 package with 5V-tolerant capability on 102 pins.
Technical Context
The STM32L152RDT6 implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) with sub-µA retention states and 8 µs wakeup latency. Its memory subsystem includes dual-bank Flash enabling Read-While-Write (RWW), ECC-protected EEPROM, and FSMC supporting SRAM/PSRAM/NOR interfaces.
Peripherals are tightly coupled to power domains: USB uses internal 48 MHz PLL; LCD controller integrates step-up converter and blinking logic; analog block includes three rail-to-rail op-amps, two ultra-low-power comparators with window mode, and temperature sensor with calibrated VREFINT reference.
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 MPU for memory protection. |
| Flash Memory | 384 KB with ECC and dual-bank architecture - supports RWW for firmware updates without halting execution. |
| SRAM | 48 KB - sufficient for RTOS stacks, communication buffers, and sensor fusion algorithms. |
| EEPROM | 12 KB true EEPROM with ECC - retains calibration data and configuration across power cycles without external NV storage. |
| ADC | 12-bit, 1 Msps, up to 40 channels - captures high-resolution analog signals from multi-sensor arrays in portable devices. |
| DAC | 12-bit, 2-channel with output buffers - generates precise analog waveforms or bias voltages for sensor excitation or actuator control. |
| Low-Power Stop Mode | 0.475 µA (16 wakeup lines) - extends battery life in intermittently active monitoring applications. |
| USB Interface | Full-speed USB 2.0 with internal 48 MHz PLL - enables direct PC connectivity without external clock crystal. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin layout optimized for compact PCB routing and thermal dissipation in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate analog/digital rails ensure noise isolation for precision ADC/DAC operation. |
| VSS, VSSA | Ground returns | Dedicated analog ground minimizes coupling of digital switching noise into sensitive analog paths. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 116 total fast I/Os (102 5V-tolerant); all mappable to 16 EXTI lines for flexible interrupt-driven wakeups. |
| PC13–PC15 | RTC oscillator pins | Support 32.768 kHz crystal for autonomous real-time clock operation during Stop/Standby modes. |
| PA11/PA12 | USB D+/D− | Integrated full-speed transceiver with internal pull-ups - eliminates external USB PHY components. |
| VLCD | LCD power supply | Drives internal step-up converter for LCD contrast control up to 8×40 segment displays. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.475 µA with 16 wakeup lines - enables years of operation on coin-cell batteries in metering applications. |
| Capacitive touch sensing | Up to 34 channels with hardware-accelerated acquisition - replaces mechanical buttons with robust, sealed user interfaces. |
| Memory protection unit (MPU) | Enforces privilege levels and memory region access rules - critical for secure firmware partitioning in certified medical devices. |
| Embedded CRC calculation unit | Hardware-accelerated checksum generation for firmware integrity verification and data packet validation. |
| Pre-programmed USB/USART bootloader | Enables field firmware updates without JTAG debugger - reduces production test and service overhead. |
| 96-bit unique ID | Factory-programmed serial number for device authentication, licensing, and secure provisioning in IoT deployments. |
Applications
| Portable Medical Sensors | Smart Utility Meters |
|---|---|
Use Scenario: Wearable ECG patch continuously sampling biopotentials while logging data to internal EEPROM and transmitting via USB upon docking. IC Role / Device Role / Timing Role: Central MCU managing analog front-end (ADC, op-amps, comparators), real-time clock, low-power state transitions, and USB mass storage protocol stack. Use Value: Sub-µA Stop mode preserves battery for >2 weeks between charges; 12 KB EEPROM stores patient calibration and waveform history without external memory. | Use Scenario: Battery-powered water/gas meter reading pressure, temperature, and flow while reporting hourly via wired USB or UART to gateway. IC Role / Device Role / Timing Role: System-on-chip handling sensor interfacing, metrology calculations, RTC-based scheduling, and secure data logging with tamper detection. Use Value: Dual-bank Flash allows safe over-the-air updates; 3 op-amps condition bridge sensor outputs; 12-bit DAC calibrates reference voltages. |
| Industrial Handheld Terminals | Low-Power Environmental Monitors |
Use Scenario: Rugged handheld scanner capturing barcodes and environmental readings (temp/humidity) in warehouses, with LCD display and USB-CDC host interface. IC Role / Device Role / Timing Role: Main controller driving 8×40-segment LCD, managing capacitive touch keys, executing barcode decode algorithms, and maintaining USB virtual COM port. Use Value: Integrated LCD driver eliminates external display controller; 34-capacitive-sensing channels enable bezel-free UI; 116 I/Os support multiple peripheral expansions. | Use Scenario: Solar-powered air quality node measuring PM2.5, CO₂, and VOCs, sleeping at 0.475 µA between 10-minute measurement cycles, then waking to process and transmit data. IC Role / Device Role / Timing Role: Ultra-low-power system manager coordinating sensor polling, ADC conversions, data filtering, and wireless module handshaking via USART. Use Value: 8 µs wakeup time minimizes active energy per cycle; temperature sensor and VREFINT enable self-calibration; 12-bit ADC resolves sub-ppm gas concentration changes. |
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 |
|---|---|---|---|
| STM32L432KCU6 | Arm Cortex-M4F core, 256 KB Flash, no EEPROM, no LCD driver, higher active current (80 µA/MHz) | Targets sensor fusion with FPU; lacks integrated display and nonvolatile data storage | Select when floating-point math or Bluetooth coexistence is required, but LCD and EEPROM are unnecessary |
| STM32L072RBT6 | Cortex-M0+, 128 KB Flash, 20 KB RAM, no DAC, no LCD, lower peripheral count | Suitable for simpler, cost-sensitive nodes where 12-bit DAC or 8×40 LCD are unused | Choose for minimal BOM cost and footprint where ultra-low active power (113 µA/MHz) suffices and feature set is reduced |
Compared with STM32L152RDT6, STM32L432KCU6 trades EEPROM and LCD integration for FPU-enabled signal processing, while STM32L072RBT6 reduces cost and complexity at the expense of analog richness and display capability - making the L152 optimal for feature-complete, battery-constrained HMI and metrology designs.
Availability
STM32L152RDT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld terminals, and low-power environmental monitors requiring stable component supply across extended product lifecycles.
Supply support for STM32L152RDT6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong emphasis on energy efficiency and industrial reliability.
The STM32L1 series targets ultra-low-power embedded applications demanding long battery life, integrated analog peripherals, and robust security features - designed specifically for portable instrumentation, wearables, and smart meters.
FAQ
Does STM32L152RDT6 support USB device mode without an external crystal?
Yes. The STM32L152RDT6 integrates a 48 MHz PLL fed by its internal 16 MHz HSI RC oscillator, enabling full-speed USB 2.0 device operation without requiring an external crystal. This reduces BOM cost and board area while maintaining USB compliance under specified voltage and temperature conditions.
What is the maximum number of capacitive sensing channels supported?
The STM32L152RDT6 supports up to 34 capacitive sensing channels using its built-in touch sensing controller (TSC). All channels are hardware-accelerated with programmable sensitivity, spread-spectrum modulation, and automatic recalibration - eliminating need for external touch ICs in button/slider/knob interfaces.
How does the 12 KB EEPROM differ from standard Flash memory?
The 12 KB EEPROM is a dedicated, ECC-protected memory block with byte-level erase/write capability, rated for 400k write/erase cycles and 20-year data retention at 85°C. Unlike Flash, it requires no page erasure before writing and supports true random-access updates - ideal for storing calibration coefficients and runtime configuration without wear leveling.
Can the LCD driver operate without external components?
Yes. The integrated LCD controller supports up to 8×40 segments with internal step-up converter, contrast adjustment, blinking mode, and software-controlled bias generation. Only external LCD glass and optional external capacitor (for charge pump stability) are required - no external driver IC or boost converter needed.
STM32L152RDT6 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:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 12K x 8
- RAM Size:
- 48K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 21x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L152RDT6 FAQ
1.How can I place an order for STM32L152RDT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L152RDT6 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 STM32L152RDT6 reliable?
The price and inventory of STM32L152RDT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L152RDT6 is usually 5 days.
3.What payment methods are accepted for STM32L152RDT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L152RDT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L152RDT6?
STM32L152RDT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L152RDT6 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 STM32L152RDT6?
For technical support, including STM32L152RDT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L152RDT6 requirements.
6.How does Aetrix verify that STM32L152RDT6 is sourced from the original manufacturer or authorized distributors?
All STM32L152RDT6 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 STM32L152RDT6 meets industry standards.
7.What is the process for return or replacement of STM32L152RDT6?
All STM32L152RDT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L152RDT6, 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 STM32L152RDT6 part is unused and in its original packaging.
Return procedure for STM32L152RDT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L152RDT6 Tags
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