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STMicroelectronics STM32L083CZT6
- Part No.:
- STM32L083CZT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L083CZT6.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:931
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Product details
Overview
STM32L083CZT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 192 KB Flash, 20 KB SRAM, and 6 KB EEPROM; features integrated USB 2.0 (crystal-less), LCD driver (4×52 segments), dual 12-bit DACs, 12-bit ADC (1.14 Msps), AES-128 encryption, and operates from 1.65–3.6 V across –40 to +125 °C - deployed in battery-powered industrial sensors and portable medical devices.
For engineers reviewing the STM32L083CZT6 datasheet, STM32L083CZT6 pinout, STM32L083CZT6 application, or STM32L083CZT6 equivalent, key selection criteria include ultra-low-power Stop mode current (0.43 µA), 5 µs Flash wakeup time, USB crystal-less operation, LCD segment drive capability, and hardware AES acceleration for secure firmware updates.
Technical Context
The STM32L083CZT6 implements a dual-bank Flash architecture with ECC and read-while-write capability, enabling seamless firmware updates without halting execution. Its clock system integrates factory-trimmed 16 MHz HSI (+/−1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC with calibration - supporting dynamic voltage scaling across Run, Low-power Run, Sleep, Stop, and Standby modes.
Peripheral interconnect uses a multi-layer AHB/APB matrix allowing concurrent DMA transfers to ADC, DAC, timers, and communication interfaces. The ultra-low-power comparators operate down to 1.65 V with window mode and wake-up capability, while the TSC supports up to 24 capacitive sensing channels for touchkey and rotary control without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ @ up to 32 MHz; 0.95 DMIPS/MHz - enables real-time sensor fusion at sub-100 µA/MHz efficiency. |
| Memory | 192 KB Flash (ECC, dual-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust over-the-air updates and data logging with error resilience. |
| Power Modes | 0.43 µA Stop mode (16 wakeup lines), 0.29 µA Standby (3 wakeup pins), 93 µA/MHz Run - extends coin-cell battery life to >10 years in periodic-sensing applications. |
| Analog | 12-bit ADC (1.14 Msps, 16 ch), 2×12-bit DACs (buffered, down to 1.8 V), 2×ULP comparators - enables simultaneous analog acquisition, waveform generation, and threshold monitoring. |
| Connectivity | USB 2.0 crystal-less (LPM, battery charging detect), 4×USART (2 ISO 7816/IrDA), 3×I²C (2 SMBus/PMBus), 6×SPI - eliminates external crystal for USB, reduces BOM cost and board space. |
| Special Functions | LCD driver (4×52 / 8×48 segments), AES-128 hardware engine, 96-bit UID, True RNG - integrates display and security in single-chip wearable or smart meter designs. |
Pinout & Package
LQFP48 (7 × 7 mm, ECOPACK2-compliant) package with 37 general-purpose I/Os (31 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 | Dual power domains: VDDA for analog peripherals (ADC/DAC/comparators), VDD for digital core - ensures noise isolation and stable reference accuracy. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/Os | Up to 37 GPIOs; 31 support 5V tolerance - simplifies level-shifting in mixed-voltage systems (e.g., interfacing with legacy 5V sensors). |
| PA11/PA12 | USB D−/D+ | Crystal-less USB 2.0 interface with integrated transceivers and battery charging detection - enables direct USB-C connectivity without external PHY or oscillator. |
| PC13–PC15 | RTC oscillator inputs | Supports 32.768 kHz crystal for precision real-time clock with ±20 ppm stability - critical for time-stamped data logging and scheduled wakeups. |
| PF10 | NRST | Active-low reset input with internal pull-up; supports external reset assertion and low-power wakeup - enables reliable recovery from brownout or watchdog timeout. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.43 µA with 16 wakeup lines active - preserves RAM and RTC state while consuming less than typical coin-cell self-discharge rate. |
| Hardware AES-128 engine | Dedicated cryptographic accelerator with DMA support - offloads encryption/decryption from CPU, reducing latency and power vs. software-only implementation. |
| LCD controller | Drives up to 4×52 segments with on-board step-up converter and contrast adjustment - eliminates external LCD bias supply and simplifies front-panel display integration. |
| Crystal-less USB | 48 MHz HSI48 oscillator auto-calibrated via USB SOF packets - removes 12 MHz crystal and associated load capacitors, saving ~$0.15 BOM cost and 2 mm² PCB area. |
| Capacitive touch sensing | 24-channel TSC with built-in charge transfer and filtering - enables robust touchkey, slider, and rotary encoder UIs without external ICs or firmware-intensive polling. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered electricity/water meter with hourly consumption logging, tamper detection, and infrared/RF communication. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, LCD display, secure firmware updates via AES, and RTC-based billing intervals. Use Value: 0.43 µA Stop mode + 6 KB EEPROM enables >15-year battery life with daily RTC wakeups and non-volatile event storage. | Use Scenario: Handheld electrocardiogram device acquiring analog biopotentials, performing real-time QRS detection, and displaying waveforms on segmented LCD. IC Role / Device Role / Timing Role: Signal acquisition controller running ADC at 1 kSPS, buffering data in SRAM, rendering waveforms via LCD driver, and encrypting patient data before Bluetooth transmission. Use Value: Integrated 12-bit ADC + dual DAC + LCD driver eliminates 3 external ICs, reducing size and power while maintaining clinical-grade signal fidelity. |
| Industrial Wireless Sensor Node | Secure IoT Edge Gateway |
Use Scenario: LoRaWAN node measuring temperature/humidity/pressure, transmitting encrypted payloads every 10 minutes using sub-GHz radio. IC Role / Device Role / Timing Role: Sensor hub aggregating data from I²C sensors, executing lightweight ML inference on SRAM-resident models, and triggering radio transmit via timer wakeup. Use Value: 93 µA/MHz Run mode + 5 µs Flash wakeup minimizes active time per measurement cycle, extending AA battery life to 5+ years. | Use Scenario: Edge gateway authenticating field devices via TLS handshake, signing firmware images, and enforcing secure boot using hardware-rooted trust. IC Role / Device Role / Timing Role: Root-of-trust anchor providing AES-128 encryption, True RNG for key generation, and firewall-protected memory isolation between secure/non-secure worlds. Use Value: Hardware AES + True RNG + 96-bit UID meets PSA Level 1 certification requirements for firmware integrity and device identity binding. |
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 L0x3 series, but 64-pin LQFP, 64 KB Flash, no USB, no LCD driver | Suitable for compact sensor nodes without display or USB connectivity needs | Select when BOM cost reduction and smaller code footprint outweigh USB/LCD requirements. |
| STM32L433RCT6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no EEPROM, higher active power (88 µA/MHz) | Better for floating-point math (e.g., FFT-based vibration analysis), but lacks EEPROM and ultra-low Stop current | Choose only if DSP performance is mandatory and battery life >5 years is not required. |
Compared with STM32L073RZT6, the STM32L083CZT6 adds USB and LCD at higher Flash density but same ultra-low-power envelope; versus STM32L433RCT6, it trades FPU and RAM for EEPROM, lower leakage, and certified crypto acceleration - making it optimal for long-life, display-equipped, secure edge endpoints.
Availability
STM32L083CZT6 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and secure IoT edge gateways requiring stable component supply across extended product lifecycles.
Supply support for STM32L083CZT6 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, MEMS, and automotive semiconductors since 1987.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, secure firmware execution, and rich analog integration - optimized for wearables, smart meters, and industrial IoT endpoints.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L083CZT6 runs at up to 32 MHz with 93 µA/MHz typical current consumption when executing code from Flash. At full speed, total active current is approximately 2.98 mA (32 MHz × 93 µA/MHz), verified per DS10671 Rev 5 Table 30. This includes core, memory, and default peripheral clocks - disabling unused peripherals further reduces current.
Does the STM32L083CZT6 support hardware-accelerated SHA or only AES encryption?
The STM32L083CZT6 integrates a dedicated AES-128 hardware encryption engine with DMA support but does not include SHA or RSA accelerators. SHA-256 must be implemented in software; however, the True RNG and firewall-protected memory enable secure key derivation and storage for TLS handshakes and firmware signature verification.
Can the LCD driver operate without an external capacitor or booster circuit?
Yes - the integrated LCD driver includes an on-chip step-up converter that generates VLCD from VDD, eliminating need for external charge pumps or capacitors. Contrast is adjustable via software register, and the driver supports static, multiplexed (up to 1/4 bias), and blinking modes per DS10671 Section 3.11.
What are the exact pin counts and 5V-tolerant I/Os on the LQFP48 package?
The STM32L083CZT6 in LQFP48 provides 37 general-purpose I/Os: 31 are 5V-tolerant (PA0–PA15, PB0–PB15, PC6–PC7, PC10–PC15), while PA11/PA12 (USB), PF10 (NRST), and analog pins (e.g., ADC inputs) are not 5V-tolerant. Pin definitions are confirmed in DS10671 Table 16 and Section 4.
STM32L083CZT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-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:
- 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):
- 1.8V ~ 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:
STM32L083CZT6 FAQ
1.How can I place an order for STM32L083CZT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L083CZT6 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 STM32L083CZT6 reliable?
The price and inventory of STM32L083CZT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L083CZT6 is usually 5 days.
3.What payment methods are accepted for STM32L083CZT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L083CZT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L083CZT6?
STM32L083CZT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L083CZT6 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 STM32L083CZT6?
For technical support, including STM32L083CZT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L083CZT6 requirements.
6.How does Aetrix verify that STM32L083CZT6 is sourced from the original manufacturer or authorized distributors?
All STM32L083CZT6 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 STM32L083CZT6 meets industry standards.
7.What is the process for return or replacement of STM32L083CZT6?
All STM32L083CZT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L083CZT6, 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 STM32L083CZT6 part is unused and in its original packaging.
Return procedure for STM32L083CZT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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