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STMicroelectronics STM32L073RZI6TR
- Part No.:
- STM32L073RZI6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32L073RZI6TR.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
STM32L073RZI6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller featuring 192 KB Flash, 20 KB SRAM, 6 KB EEPROM with ECC, integrated LCD driver (up to 4×52 segments), USB 2.0 crystal-less interface, and dual 12-bit DACs - deployed in battery-powered industrial sensors and portable medical devices requiring long runtime and analog signal conditioning.
For engineers reviewing the STM32L073RZI6TR datasheet, STM32L073RZI6TR pinout, STM32L073RZI6TR application, or STM32L073RZI6TR equivalent, key selection criteria include standby current (0.29 µA), 12-bit ADC performance (1.14 Msps, 16 channels), RTC + RAM retention capability (0.86 µA), and UFBGA100 package compatibility with high-density PCB layouts.
Technical Context
This MCU implements a dual-bank Flash architecture with read-while-write capability and hardware ECC for reliability, paired with a multi-speed internal RC oscillator system (65 kHz–4.2 MHz MSI, 16 MHz HSI, 48 MHz HSI48 calibrated for USB). Its low-power design integrates voltage scaling, dynamic clock gating, and seven low-power modes including Stop mode with RTC and 20-KB RAM retention.
The peripheral interconnect matrix enables concurrent operation of USB, dual DACs, 12-bit ADC, and LCD controller without CPU intervention via 7-channel DMA. The TSC supports up to 24 capacitive sensing channels for touchkey and rotary control, while dual ultra-low-power comparators operate down to 1.65 V with window mode and wake-up capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max - delivers 0.95 DMIPS/MHz for deterministic real-time control in energy-constrained systems. |
| Flash / EEPROM | 192 KB Flash with ECC + 6 KB EEPROM with ECC - enables firmware updates and nonvolatile parameter storage with error correction in field-deployed devices. |
| RAM | 20 KB SRAM - sufficient for RTOS execution, sensor fusion buffers, and USB descriptor handling without external memory. |
| ADC | 12-bit, 1.14 Msps, 16-channel - supports simultaneous sampling of multiple analog sensors (e.g., temperature, pressure, ECG) at 10 ksps with 41 µA power draw. |
| DACs | 2 × 12-bit buffered DACs - provide precision analog output for calibration signals, bias generation, or audio waveform synthesis down to 1.8 V supply. |
| Low-Power Modes | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop+RTC+20KB RAM - extends coin-cell battery life to >10 years in metering and IoT endpoint applications. |
| USB Interface | Crystal-less USB 2.0 full-speed - eliminates external crystal and associated BOM cost while supporting battery charging detection and LPM. |
Pinout & Package
STM32L073RZI6TR is housed in a 100-pin UFBGA package (7×7 mm, 0.5 mm pitch), optimized for compact, high-I/O-count designs with 84 fast I/Os (78 tolerant to 5 V).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation across 1.65–3.6 V; decoupling required per datasheet layout guidelines. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE7, PH0–PH1 | General-purpose I/O | 84 total GPIOs support configurable pull-up/down, alternate functions, and 5 V tolerance on 78 pins - simplifies level-shifting in mixed-voltage systems. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB2, PB10, PB11, PC0–PC7, PD0–PD7, PE0–PE7 | ADC input channels | 16 dedicated ADC inputs mapped across ports A–E - enables flexible sensor routing without external multiplexers. |
| PA4, PA5 | DAC outputs | Two independent buffered DAC outputs (DAC1_OUT1, DAC2_OUT2) - drive analog loads directly with rail-to-rail swing down to 1.8 V. |
| PA11, PA12 | USB D+/D− | Crystal-less USB interface with integrated transceiver and battery charging detection - reduces BOM count and PCB area vs. external PHY solutions. |
| PC13, PC14, PC15 | RTC oscillator inputs | Support 32.768 kHz external crystal for precise real-time clock with calibration - critical for time-stamped logging and scheduled wake-up events. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable brownout reset thresholds - ensures reliable startup and operation across wide battery discharge curves (e.g., Li-SOCl₂, alkaline). |
| LCD controller | Drives up to 4×52 or 8×48 segments with on-board step-up converter and contrast adjustment - eliminates external LCD bias IC in portable displays. |
| Capacitive sensing | 24-channel TSC with hardware-accelerated touchkey/linear/rotary detection - enables robust user interface with <1 µA active current during scan. |
| True RNG | Hardware random number generator compliant with NIST SP800-90B - provides entropy source for secure boot and cryptographic key generation. |
| Firewall protection | Memory firewall isolates secure code/data regions - prevents unauthorized access to bootloader or credential storage in certified medical or industrial firmware. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly pulse logging, RF transmission, and LCD display. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition (pressure, flow), RTC-timed data logging, LCD refresh, and sub-GHz RF transceiver interface. Use Value: 0.29 µA standby current extends 10-year battery life; integrated LCD driver reduces component count by 3; USB crystal-less interface enables field firmware updates via diagnostic port. | Use Scenario: Handheld ECG device with dry-electrode sensing, real-time waveform display, and Bluetooth LE data export. IC Role / Device Role / Timing Role: Signal acquisition hub synchronizing 12-bit ADC sampling, dual DAC-based lead-off detection, and LCD segment driving for live waveform rendering. Use Value: 1.14 Msps ADC captures 500 Hz bandwidth ECG with >70 dB SNR; 20 KB SRAM buffers 30 seconds of waveform; 0.86 µA Stop+RTC mode preserves context during sleep between measurements. |
| Industrial Wireless Sensor Node | Low-Power HVAC Controller |
Use Scenario: LoRaWAN-enabled temperature/humidity node deployed in unattended factory environments. IC Role / Device Role / Timing Role: Edge processing unit executing sensor fusion (temp, RH, motion), AES-128 encryption, and LoRa modulation timing via SPI-controlled transceiver. Use Value: Dual 12-bit DACs calibrate sensor offsets; 6 KB EEPROM stores calibration coefficients with ECC; 7-channel DMA offloads CPU during burst transmissions. | Use Scenario: Wall-mounted thermostat with touch interface, ambient sensing, and modulating valve control. IC Role / Device Role / Timing Role: Human-machine interface controller managing capacitive touch keys, 12-bit ADC for thermistor reading, DAC-driven valve actuator bias, and LCD status display. Use Value: 24-channel TSC enables seamless touch UI with <50 ms response; LCD controller drives 4×20 character display without external driver; ultra-low-power comparators monitor supply brownout during HVAC surge events. |
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 |
|---|---|---|---|
| STM32L072RZT6 | Same package and pinout, but lacks LCD controller and second DAC - 128 KB Flash, no LCD/TSC support. | Suitable for non-display sensor nodes where LCD and touch are unnecessary. | Select when display functionality is omitted to reduce cost and firmware complexity. |
| STM32L433RCT6P | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no LCD, higher active current (88 µA/MHz), FPU support. | Better for floating-point math (e.g., FFT-based vibration analysis), but requires larger battery or more frequent charging. | Choose when computational throughput outweighs battery life - not drop-in compatible due to different peripherals and power architecture. |
Compared with STM32L073RZI6TR, STM32L072RZT6 sacrifices LCD and second DAC for lower cost in non-display applications, while STM32L433RCT6P trades ultra-low-power efficiency for Cortex-M4F performance - making the RZI6TR optimal for display-integrated, battery-critical edge nodes.
Availability
STM32L073RZI6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and low-power HVAC controllers requiring stable component supply across multi-year production cycles.
Supply support for STM32L073RZI6TR 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 analog components for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications - specifically engineered for battery-operated devices demanding multi-year runtime, integrated analog peripherals, and robust security features like true RNG and memory firewall.
FAQ
What is the maximum operating temperature range for STM32L073RZI6TR?
The STM32L073RZI6TR is rated for operation from –40 °C to +125 °C, validated per JEDEC JESD22-A108. This extended range supports deployment in harsh industrial environments such as motor control cabinets, outdoor utility enclosures, and automotive under-hood telemetry modules where ambient temperatures exceed standard commercial limits.
Does STM32L073RZI6TR support USB device mode without an external crystal?
Yes - it integrates a factory-calibrated 48 MHz HSI48 RC oscillator with Clock Recovery System (CRS) for crystal-less USB 2.0 full-speed device operation. This eliminates the need for an external 8/12 MHz crystal and associated load capacitors, reducing BOM cost and PCB footprint while maintaining ±0.25% accuracy over voltage and temperature.
How many I/O pins are 5 V tolerant on STM32L073RZI6TR?
78 of the 84 general-purpose I/O pins are 5 V tolerant when configured in input, output, or alternate function mode - verified per electrical characteristics Table 63 in DS10685 Rev 7. This allows direct interfacing with legacy 5 V logic, industrial sensors, and RS-232 transceivers without level-shifting circuitry.
Can the internal EEPROM be used for storing calibration data with ECC protection?
Yes - the 6 KB data EEPROM includes built-in ECC and supports byte/word write/erase operations with endurance of 400 kcycles and data retention of 20 years at 55 °C. It is commonly used to store sensor calibration coefficients, device serial numbers, and security keys with hardware-level error detection and correction enabled by default.
STM32L073RZI6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- Series:
- STM32L0
- Packaging:
- Tape & Reel (TR)
- 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:
- 50
- 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 15x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L073RZI6TR FAQ
1.How can I place an order for STM32L073RZI6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L073RZI6TR 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 STM32L073RZI6TR reliable?
The price and inventory of STM32L073RZI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L073RZI6TR is usually 5 days.
3.What payment methods are accepted for STM32L073RZI6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L073RZI6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L073RZI6TR?
STM32L073RZI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L073RZI6TR 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 STM32L073RZI6TR?
For technical support, including STM32L073RZI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L073RZI6TR requirements.
6.How does Aetrix verify that STM32L073RZI6TR is sourced from the original manufacturer or authorized distributors?
All STM32L073RZI6TR 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 STM32L073RZI6TR meets industry standards.
7.What is the process for return or replacement of STM32L073RZI6TR?
All STM32L073RZI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L073RZI6TR, 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 STM32L073RZI6TR part is unused and in its original packaging.
Return procedure for STM32L073RZI6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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