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STMicroelectronics STM32L083RBT6
- Part No.:
- STM32L083RBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L083RBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,776
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Product details
Overview
STM32L083RBT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 192 KB Flash, 20 KB SRAM, and 6 KB EEPROM, integrated USB 2.0 (crystal-less), LCD driver (up to 4×52 segments), dual 12-bit DACs, and hardware AES-128 encryption. It operates from 1.65–3.6 V across –40 to +125 °C and targets battery-powered industrial sensors and portable medical devices requiring long runtime and secure data handling.
For engineers reviewing the STM32L083RBT6 datasheet, STM32L083RBT6 pinout, STM32L083RBT6 application, or STM32L083RBT6 equivalent, key selection criteria include standby current (0.29 µA), 12-bit ADC performance (1.14 Msps, 16-channel), USB crystal-less operation, LCD segment drive capability, and ECC-protected memory architecture.
Technical Context
The STM32L083RBT6 implements a dual-bank Flash architecture with read-while-write capability and ECC for fault resilience, paired with a 32 MHz max CPU clock derived from multiple internal/external sources-including factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC. Its low-power design integrates dynamic voltage scaling and seven power modes, enabling sub-µA retention in Stop mode with RTC active.
Peripherals are routed via an interconnect matrix supporting concurrent DMA transfers across ADC, USB, SPI, I²C, and timers. The device features a dedicated LCD controller with on-board step-up converter and contrast control, plus two ultra-low-power comparators with window mode and wake-up capability down to 1.65 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ with MPU, 32 MHz max - enables deterministic real-time control with memory protection for certified firmware. |
| Flash / SRAM / EEPROM | 192 KB Flash (ECC, dual-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust firmware updates and nonvolatile parameter storage with error correction. |
| Power Consumption | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop+RTC+20KB RAM retention - extends battery life in intermittent-sensing applications. |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 channels), 2×12-bit DACs with buffers, 2×ULP comparators - enables high-fidelity sensor signal chain and analog output without external components. |
| USB & Timing | Crystal-less USB 2.0 FS, 48 MHz HSI48 self-calibration, 32 kHz LSE RTC with calibration - eliminates external crystal cost and improves BOM simplicity for portable designs. |
| Security & Reliability | AES-128 hardware engine, 96-bit unique ID, CRC unit, firewall protection - provides authenticated firmware execution and secure data transmission. |
| LCD Support | Up to 4×52 or 8×48 segments, on-chip step-up converter, blinking/contrast control - drives monochrome displays directly without external bias circuitry. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 51 general-purpose I/Os (47 5V-tolerant), including dedicated LCD segment/common pins, USB D+/D−, and hardware debug (SWDIO/SWCLK).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 1.65–3.6 V core supply; decoupling required per datasheet layout guidelines for low-noise operation. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PH0–PH1 | General-purpose I/Os | 51 GPIOs support multiple alternate functions (ADC, USART, SPI, etc.); 47 tolerate 5 V - simplifies level-shifting in mixed-voltage systems. |
| PA11/PA12 | USB D+/D− | Dedicated crystal-less USB 2.0 Full-Speed interface - enables HID, CDC, or DFU without external oscillator. |
| PC13–PC15 | RTC oscillator inputs | Support 32.768 kHz external crystal for precision real-time clock with temperature-compensated calibration. |
| VLCD | LCD voltage supply | Output of internal step-up converter; powers LCD segments directly - eliminates external charge pump IC. |
| SWDIO / SWCLK | Serial Wire Debug | 2-pin debug interface for programming and real-time trace - compatible with ST-LINK and standard ARM debug tools. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power modes | 0.29 µA Standby with 3 wakeup pins enables >10-year coin-cell operation in periodic sensor readout. |
| Hardware AES-128 | Accelerates encrypted communication (e.g., BLE over UART) without CPU overhead or timing side-channel leakage. |
| Integrated LCD controller | Drives up to 208-segment displays with programmable contrast and blinking - reduces component count in handheld instrumentation. |
| Dual 12-bit DACs | Provide simultaneous analog outputs (e.g., sensor calibration reference + actuator control) with rail-to-rail buffered drive down to 1.8 V. |
| Capacitive touch sensing | 24-channel TSC supports touchkey, linear, and rotary sensors - enables intuitive UI in medical or industrial handhelds without external IC. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly pressure/flow readings, local LCD display, and periodic RF transmission. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, LCD refresh, RTC-based scheduling, and secure firmware update via USB. Use Value: 0.29 µA Standby current and integrated LCD driver eliminate external PMIC and display bias IC, reducing PCB area and BOM cost by ≥3 components. | Use Scenario: Handheld electrocardiogram device acquiring analog biopotentials, performing real-time filtering, and displaying waveform on segmented LCD. IC Role / Device Role / Timing Role: Signal acquisition hub with 12-bit ADC (1.14 Msps), dual DACs for reference generation, and LCD controller driving 4×40-segment display. Use Value: On-chip 12-bit ADC and DACs meet clinical-grade accuracy requirements while eliminating external precision converters and op-amps. |
| Industrial Wireless Sensor Node | Secure Access Control Terminal |
Use Scenario: LoRaWAN node monitoring temperature/humidity/vibration in harsh factory environments with 10-year battery life. IC Role / Device Role / Timing Role: Low-power host MCU interfacing with digital sensors (I²C/SPI), managing sleep/wake cycles, and encrypting telemetry with AES-128 before RF transmission. Use Value: Hardware AES engine processes 128-bit blocks in <100 cycles, enabling end-to-end encryption without compromising 5 µs wakeup latency from Flash. | Use Scenario: Battery-operated door lock with capacitive keypad, tamper detection, and secure credential storage. IC Role / Device Role / Timing Role: Trusted execution environment managing touch sensing (24-channel TSC), secure key storage in EEPROM with ECC, and AES-encrypted Bluetooth pairing. Use Value: Integrated TSC and AES eliminate separate touch controller and crypto co-processor, reducing bill-of-materials and attack surface. |
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 |
|---|---|---|---|
| STM32L073RBT6 | 128 KB Flash, no USB, no LCD controller, same core/peripherals otherwise | Suitable for non-display, non-USB sensor nodes where BOM cost reduction is critical | Select when USB connectivity and segmented LCD are unnecessary - saves ~$0.30/unit at volume. |
| STM32L433RCT6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no LCD, higher active power (81 µA/MHz) | Better for floating-point math (e.g., FFT-based vibration analysis) but requires external display driver | Choose only if DSP capability outweighs 2.8× higher Run-mode current and loss of integrated LCD support. |
Compared with STM32L073RBT6, the STM32L083RBT6 adds USB and LCD at modest cost premium; versus STM32L433RCT6, it trades computational headroom for significantly lower static power and integrated display control - making it optimal for long-life, display-equipped edge sensors.
Availability
STM32L083RBT6 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and secure access terminals requiring stable component supply and long-term manufacturability.
Supply support for STM32L083RBT6 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 focus on energy efficiency and industrial reliability.
The STM32L0 series is designed specifically for ultra-low-power embedded applications demanding multi-year battery life, integrated peripherals (LCD, USB, AES), and extended temperature operation - targeting metering, wearables, and IoT edge nodes.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32L083RBT6 achieves a maximum CPU frequency of 32 MHz using its internal 16 MHz HSI oscillator with PLL multiplication (×2), or directly from an external 1–25 MHz crystal. The PLL is fully configurable and supports dynamic voltage scaling to maintain stability across supply voltages from 1.65 V to 3.6 V.
Does the device support crystal-less USB operation, and what are the accuracy requirements?
Yes - the STM32L083RBT6 integrates a self-calibrating 48 MHz HSI48 RC oscillator tuned against the USB SOF packet timing, achieving ±0.25% accuracy required for Full-Speed USB without external crystal. Calibration occurs automatically at startup and during runtime via the Clock Recovery System (CRS).
How does the LCD controller handle voltage requirements for different display types?
The integrated LCD controller includes an on-chip step-up converter generating VLCD from VDD (1.65–3.6 V input → up to 5.5 V output), adjustable contrast via software-controlled resistor ladder, and blinking mode with independent segment control - supporting common 3V and 5V LCD modules without external bias circuitry.
What security features are implemented in hardware beyond AES encryption?
In addition to AES-128, the STM32L083RBT6 includes a firewall protecting memory regions (SRAM, Flash), 96-bit unique device ID, readout protection (RDP) levels, write protection for Flash/EEPROM sectors, and tamper-detect pins with RTC backup register retention - meeting IEC 62443-3-3 SL2 requirements for secure firmware deployment.
STM32L083RBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32L0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 6K x 8
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 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:
STM32L083RBT6 FAQ
1.How can I place an order for STM32L083RBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L083RBT6 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 STM32L083RBT6 reliable?
The price and inventory of STM32L083RBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L083RBT6 is usually 5 days.
3.What payment methods are accepted for STM32L083RBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L083RBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L083RBT6?
STM32L083RBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L083RBT6 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 STM32L083RBT6?
For technical support, including STM32L083RBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L083RBT6 requirements.
6.How does Aetrix verify that STM32L083RBT6 is sourced from the original manufacturer or authorized distributors?
All STM32L083RBT6 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 STM32L083RBT6 meets industry standards.
7.What is the process for return or replacement of STM32L083RBT6?
All STM32L083RBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L083RBT6, 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 STM32L083RBT6 part is unused and in its original packaging.
Return procedure for STM32L083RBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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