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STMicroelectronics STM32L083CZU6
- Part No.:
- STM32L083CZU6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32L083CZU6.pdf
- Description:
- IC MCU 32BIT 192KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,744
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Product details
Overview
STM32L083CZU6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 192 KB Flash, 20 KB SRAM, 6 KB EEPROM, integrated LCD driver, USB 2.0 (crystal-less), and hardware AES-128 encryption. It operates from 1.65–3.6 V across –40 to +125 °C and delivers 0.86 µA Stop mode + RTC with 20-KB RAM retention - ideal for battery-powered industrial sensors and portable medical devices.
For engineers reviewing the STM32L083CZU6 datasheet, STM32L083CZU6 pinout, STM32L083CZU6 application, or STM32L083CZU6 equivalent, key selection criteria include ultra-low-power operation down to 0.29 µA Standby, dual 12-bit DACs with output buffers, 12-bit ADC at 1.14 Msps, USB crystal-less capability, and 78 I/Os with 5V tolerance - all in a UFBGA100 (7×7 mm) package.
Technical Context
The STM32L083CZU6 integrates an Arm Cortex-M0+ core with MPU, running up to 32 MHz using multiple clock sources: HSI16 (±1%), HSI48 (self-calibrated for USB), LSE (32 kHz RTC), and MSI (65 kHz–4.2 MHz). Its power architecture supports five low-power modes - including Stop mode with RTC + RAM retention and Standby with 3 wakeup pins - enabling sub-µA system-level energy optimization.
Analog subsystem includes two independent 12-bit DACs (down to 1.8 V), a 12-bit ADC (1.14 Msps, 16 channels, operational down to 1.65 V), two ultra-low-power comparators (window mode + wake-up), and a 24-channel capacitive sensing controller. The on-chip LCD driver supports up to 4×52 or 8×48 segments with on-board step-up conversion and contrast control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ with MPU, 0.95 DMIPS/MHz, up to 32 MHz - enables deterministic real-time control with memory protection. |
| Memory | 192 KB Flash with ECC & read-while-write, 20 KB SRAM, 6 KB EEPROM with ECC - supports firmware updates and data logging without external storage. |
| Power Consumption | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop + RTC + 20 KB RAM retention - extends coin-cell battery life to >10 years in sensor nodes. |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 ch), 2×12-bit DACs with buffers, 2×ULP comparators - enables precision analog signal generation and monitoring at ultra-low voltage. |
| USB Interface | USB 2.0 full-speed, crystal-less, with battery charging detection and LPM - eliminates external crystal, reduces BOM cost and PCB area. |
| Package | UFBGA100, 7×7 mm, 0.5 mm pitch - provides high I/O density (up to 84 fast I/Os, 78 5V-tolerant) in compact footprint for space-constrained designs. |
| Security | Hardware AES-128 engine, true RNG, firewall protection, 96-bit unique ID - meets basic secure boot and data confidentiality requirements. |
Pinout & Package
STM32L083CZU6 is housed in a 100-pin Ultra-Fine Pitch Ball Grid Array (UFBGA100) package with 0.5 mm ball pitch and 7×7 mm body size. This RoHS-compliant ECOPACK2 package supports automated assembly and offers thermal performance suitable for extended industrial temperature operation (–40 to +125 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and I/O (VDDIO2) enable noise isolation and flexible rail management. |
| VSS, VSSA | Ground references | Dedicated analog ground (VSSA) minimizes coupling noise into ADC/DAC paths for <1 LSB INL error. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE7, PH0–PH1 | General-purpose I/Os | 78 of 84 I/Os are 5V tolerant - simplifies level-shifting in mixed-voltage systems interfacing with legacy peripherals. |
| PA11/PA12 | USB D+/D− | Crystal-less USB interface with integrated transceivers and trimming logic - eliminates external 48 MHz crystal and matching components. |
| PC13–PC15 | RTC oscillator inputs | Supports 32.768 kHz external crystal for precise real-time clock with calibration registers for ±1 ppm accuracy over temperature. |
| PF0–PF1 | LCD segment/common drivers | Enable direct connection to up to 4×52 or 8×48 LCD segments with internal charge pump - removes need for external LCD bias generator. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode + RTC + 20 KB RAM retention | 0.86 µA - maintains timekeeping and critical state while preserving full RAM content for instant resume. |
| Crystal-less USB 2.0 full-speed | Integrated 48 MHz HSI48 oscillator with self-calibration against USB SOF - eliminates crystal, saves ~$0.15 BOM cost and 2 mm² PCB area. |
| Hardware AES-128 encryption engine | Dedicated peripheral with DMA support - offloads CPU during secure firmware updates or encrypted sensor data transmission. |
| 24-channel capacitive sensing controller (TSC) | Supports touchkey, linear, and rotary sensors with built-in charge transfer and filtering - enables robust user interface without external IC. |
| On-chip LCD driver with step-up converter | Drives up to 8×48 segments with programmable contrast and blinking - reduces component count in portable instrumentation displays. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity node powered by CR2032 coin cell, transmitting data every 5 minutes via BLE gateway. IC Role / Device Role / Timing Role: Main MCU managing sensor acquisition (ADC), RTC-triggered wake-up, USB-based firmware update, and AES-encrypted payload packaging. Use Value: 0.29 µA Standby current extends battery life beyond 10 years; 5 µs Flash wakeup ensures rapid response to external interrupts. | Use Scenario: Handheld ECG device with monochrome LCD display, rechargeable Li-ion battery, and USB-C charging/diagnostic port. IC Role / Device Role / Timing Role: System controller handling analog front-end (dual DACs for reference generation, ADC for signal digitization), LCD rendering, and crystal-less USB battery charging detection. Use Value: Integrated step-up LCD driver and USB crystal-less operation reduce external components by 7; 125 °C rating supports sterilization cycles. |
| Smart Utility Meter | Low-Power IoT Gateway |
Use Scenario: Battery-backed gas/water meter with pulse counting, tamper detection, and LoRaWAN backhaul via UART-connected module. IC Role / Device Role / Timing Role: Primary host MCU executing metrology algorithms, managing EEPROM-based lifetime logging, and driving LCD for local readout. Use Value: 6 KB EEPROM with ECC ensures 100k write cycles and 40-year data retention; 78 5V-tolerant I/Os simplify interface to mechanical reed switches and opto-couplers. | Use Scenario: Edge node aggregating Zigbee/Z-Wave sensor data, performing local preprocessing, and forwarding via Wi-Fi or cellular modem. IC Role / Device Role / Timing Role: Co-processor managing secure boot, cryptographic key storage (AES + RNG), and low-power scheduling of radio sleep/wake cycles. Use Value: Hardware firewall and 96-bit unique ID prevent cloning; 11 timers (including LPTIM) enable precise multi-protocol timing coordination. |
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 |
|---|---|---|---|
| STM32L073RZT6 | Same UFBGA100 package, but 64 KB Flash, 20 KB SRAM, no USB, no LCD driver | Lacks crystal-less USB and LCD support - unsuitable for USB-connected or display-integrated designs | Select when USB/LCD are unnecessary and cost reduction is prioritized over peripheral richness |
| STM32L433RCT6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, USB OTG FS, no LCD, higher active power (81 µA/MHz) | Higher performance and DSP capability, but 2.7× higher Run-mode current - trades energy efficiency for compute throughput | Choose for sensor fusion or audio preprocessing where M4F SIMD and FPU justify increased power budget |
Compared with STM32L073RZT6, the STM32L083CZU6 adds USB and LCD at identical package size and temperature grade; versus STM32L433RCT6, it achieves 2.7× lower Run-mode current and retains EEPROM - making it optimal for long-life, display-equipped, USB-serviceable edge nodes.
Availability
STM32L083CZU6 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and low-power IoT gateways requiring stable component supply across extended temperature and lifecycle windows.
Supply support for STM32L083CZU6 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust analog integration, and secure firmware execution - with the STM32L083CZU6 representing its highest-peripheral-count variant in UFBGA100.
FAQ
What is the maximum operating frequency and core type of the STM32L083CZU6?
The STM32L083CZU6 features an Arm Cortex-M0+ core with Memory Protection Unit (MPU), capable of running at up to 32 MHz. Its performance is rated at 0.95 DMIPS/MHz, delivering efficient real-time processing while maintaining ultra-low power consumption - validated across the full –40 to +125 °C temperature range per DS10671 Rev 5.
Does the STM32L083CZU6 support crystal-less USB operation?
Yes - the STM32L083CZU6 integrates a factory-trimmed 48 MHz HSI48 oscillator with automatic self-calibration against the USB Start-of-Frame (SOF) token. This enables full-speed USB 2.0 communication without an external crystal, reducing BOM cost and PCB footprint while maintaining ±0.25% frequency accuracy required for USB compliance.
How many I/O pins are 5V tolerant, and what is the total I/O count?
The STM32L083CZU6 provides up to 84 fast I/Os, of which 78 are 5V tolerant. This allows direct interfacing with legacy 5V peripherals (e.g., sensors, displays, optocouplers) without level shifters - confirmed in Section 3.7 (GPIOs) and Table 16 (pin definition) of the DS10671 datasheet.
What LCD segment drive capability does the STM32L083CZU6 offer?
The integrated LCD controller supports up to 4×52 or 8×48 segments, with on-chip step-up converter, contrast adjustment, and blinking mode. It drives common-electrode and segment-electrode outputs directly - eliminating external bias generators and supporting monochrome character/graphic displays in portable instrumentation and utility meters.
STM32L083CZU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- 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:
- 40
- Program Memory Size:
- 192KB (192K 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 10x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L083CZU6 FAQ
1.How can I place an order for STM32L083CZU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L083CZU6 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 STM32L083CZU6 reliable?
The price and inventory of STM32L083CZU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L083CZU6 is usually 5 days.
3.What payment methods are accepted for STM32L083CZU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L083CZU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L083CZU6?
STM32L083CZU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L083CZU6 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 STM32L083CZU6?
For technical support, including STM32L083CZU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L083CZU6 requirements.
6.How does Aetrix verify that STM32L083CZU6 is sourced from the original manufacturer or authorized distributors?
All STM32L083CZU6 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 STM32L083CZU6 meets industry standards.
7.What is the process for return or replacement of STM32L083CZU6?
All STM32L083CZU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L083CZU6, 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 STM32L083CZU6 part is unused and in its original packaging.
Return procedure for STM32L083CZU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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