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STMicroelectronics STM32L072RZH6
- Part No.:
- STM32L072RZH6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L072RZH6.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,888
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Product details
Overview
STM32L072RZH6 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, USB 2.0 (crystal-less), and dual 12-bit DACs. It operates from 1.65–3.6 V across –40 to +125 °C, delivers 0.86 µA Stop mode + RTC + 20-KB RAM retention, and supports capacitive touch sensing on up to 24 channels - deployed in battery-powered IoT sensors and portable medical monitors.
For engineers reviewing the STM32L072RZH6 datasheet, STM32L072RZH6 pinout, STM32L072RZH6 application, or STM32L072RZH6 equivalent, key selection criteria include ultra-low-power run/stop/standby current specs, USB crystal-less timing tolerance, DAC output buffer voltage range (down to 1.8 V), and 78 I/Os with 5V tolerance - all critical for energy-constrained edge node designs.
Technical Context
The STM32L072RZH6 integrates a Cortex-M0+ core with MPU, running at 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 low-power architecture includes five operational modes - Run, Sleep, Low-power Run, Stop, and Standby - each with distinct peripheral availability and current draw profiles validated down to 1.65 V supply.
Analog subsystem integration includes a 12-bit ADC (1.14 Msps, 16-channel, 1.65 V min VDD), two rail-to-rail 12-bit DACs with output buffers, two ultra-low-power comparators (window mode + wake-up), and a dedicated Touch Sensing Controller (TSC) supporting linear/rotary sensors - all sharing common voltage domain constraints and calibration registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max, 0.95 DMIPS/MHz - enables deterministic real-time control in compact firmware footprints. |
| Memory | 192 KB Flash (ECC, 2-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust firmware updates and nonvolatile data logging without external memory. |
| Power Modes | 0.86 µA Stop + RTC + 20-KB RAM retention; 0.29 µA Standby (3 wakeup pins); 93 µA/MHz Run - extends coin-cell battery life to multi-year operation. |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 ch, 1.65 V min), 2× 12-bit DACs w/ buffers (1.8 V min), 2× comparators - enables sensor signal chain integration without external precision analog ICs. |
| USB Interface | USB 2.0 full-speed, crystal-less, battery charging detection - eliminates external crystal and reduces BOM cost in portable USB-peripheral applications. |
| I/O Capability | 78 I/Os (5V tolerant), 24 capacitive sensing channels - supports direct connection to industrial sensors and touch UIs without level-shifting or dedicated touch controllers. |
| Clock Sources | HSI16 (±1%), HSI48 (USB-calibrated), LSE (RTC), MSI (65 kHz–4.2 MHz) - provides flexible, low-power timing without external oscillators in most use cases. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - compliant with ECOPACK2 environmental standards and optimized for manual rework and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support independent analog/digital supply filtering; VDDA must be ≥ VDD for ADC/DAC accuracy. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PH0–PH1 | General-purpose I/Os | 78 total GPIOs; 5V-tolerant inputs allow interfacing with legacy 5 V logic; alternate functions include USART, SPI, I2C, USB, timers. |
| PA1, PA4, PA5, PA6, PA7, PB0, PB1, PB2, etc. | Capacitive sensing inputs | 24 dedicated TSC channels mapped across ports A/B/C/D/E/H - enable self-capacitance or mutual-capacitance touch sensing without external components. |
| PA11, PA12 | USB D+/D− | Crystal-less USB 2.0 full-speed interface; internal transceiver and trimming eliminate need for external oscillator or ESD protection diodes. |
| PA4, PA5 | DAC1_OUT, DAC2_OUT | Buffered 12-bit analog outputs; operate down to 1.8 V supply - suitable for driving op-amp inputs or low-voltage reference circuits. |
| PA0, PB1 | ADC_IN0, ADC_IN1 | 12-bit ADC input channels; support single-ended or differential acquisition; calibrated against internal VREFINT for ratiometric accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode + RTC | 0.86 µA with 20 KB RAM retention - preserves context and timekeeping during extended sleep in wearable health monitors. |
| Crystal-less USB 2.0 | HSI48 self-calibration against USB SOF packets - removes external 48 MHz crystal, reducing component count and PCB area by ~2 mm². |
| Dual buffered 12-bit DACs | Output voltage range down to 1.8 V with rail-to-rail capability - enables direct drive of analog front-ends in low-voltage sensor nodes. |
| Capacitive touch controller (TSC) | 24-channel hardware-accelerated sensing with noise immunity and auto-calibration - supports touchkey, slider, and rotary encoder UIs without CPU overhead. |
| Embedded EEPROM with ECC | 6 KB data storage with error correction - ensures reliable parameter storage across 100k write/erase cycles in field-deployed industrial equipment. |
Applications
| Smart Utility Meter | Portable Medical Sensor |
|---|---|
Use Scenario: Battery-powered gas/water meter with pulse counting, RF telemetry, and tamper detection. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, LoRaWAN stack execution, and secure EEPROM-based tariff storage. Use Value: 0.29 µA Standby current and 5 µs Flash wakeup enable >10-year battery life; USB crystal-less simplifies certification for Class B EMC compliance. | Use Scenario: Handheld ECG patch with dry-electrode acquisition, real-time QRS detection, and Bluetooth LE streaming. IC Role / Device Role / Timing Role: Signal processing hub performing ADC oversampling, digital filtering, and DAC-based reference generation for electrode biasing. Use Value: Dual 12-bit DACs provide precise, low-noise electrode bias voltages; 125 °C rating supports sterilization cycle validation. |
| Industrial Wireless Node | Home Automation Hub |
Use Scenario: IP67-rated vibration/temperature sensor node powered by primary Li-SOCl₂ battery with sub-GHz RF mesh backhaul. IC Role / Device Role / Timing Role: Low-power coordinator handling sensor fusion, AES-128 encryption, and scheduled RF transmission bursts. Use Value: 78 5V-tolerant I/Os interface directly with legacy 5 V industrial transducers; Stop mode current <1 µA extends deployment interval beyond 5 years. | Use Scenario: Zigbee/Z-Wave bridge with capacitive touch panel, ambient light sensing, and local voice command preprocessing. IC Role / Device Role / Timing Role: UI processor managing 24-channel TSC, ALS ADC, and audio FFT acceleration via DMA-linked peripherals. Use Value: Hardware TSC engine offloads CPU during continuous touch polling; 20 KB SRAM accommodates real-time audio feature extraction buffers. |
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 package and pinout; adds LCD controller and extra 2 KB SRAM - no change to power/performance envelope. | Required only when segment LCD display is integrated into end product; otherwise identical firmware compatibility. | Select only if LCD driver functionality is needed; otherwise STM32L072RZH6 offers identical low-power performance at lower unit cost. |
| STM32L432KCU6 | Cortex-M4F core, 80 MHz, FPU, 256 KB Flash, but higher active current (116 µA/MHz vs 93 µA/MHz) and no crystal-less USB. | Suitable for math-intensive tasks (e.g., sensor fusion, ML inference); unsuitable for USB-peripheral-only designs requiring crystal-less timing. | Choose when floating-point computation or larger code space is mandatory; avoid if ultra-low-power USB device operation is primary requirement. |
Compared with STM32L073RZT6, the STM32L072RZH6 saves cost without sacrificing power efficiency or USB capability; versus STM32L432KCU6, it trades computational headroom for significantly lower active and standby currents - making it optimal for battery-limited USB peripherals with minimal signal processing.
Availability
STM32L072RZH6 is available at Aetrix Electronics and suitable for smart utility meters, portable medical sensors, industrial wireless nodes, and home automation hubs requiring stable component supply across long-life product roadmaps.
Supply support for STM32L072RZH6 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 - specifically designed for battery-operated devices demanding multi-year runtime, robust analog integration, and secure firmware execution in constrained environments.
FAQ
What is the minimum operating voltage for the STM32L072RZH6's ADC and DAC peripherals?
The ADC operates down to 1.65 V VDD, maintaining full 12-bit linearity and 1.14 Msps sampling rate. Both DACs function with output buffers enabled down to 1.8 V VDD - verified per DS10689 Rev 5 Table 64 (ADC) and Table 67 (DAC), with no derating required within this range.
Does the STM32L072RZH6 support USB device enumeration without an external crystal?
Yes - the HSI48 oscillator is factory-trimmed and dynamically calibrated against USB Start-of-Frame (SOF) tokens, achieving ±0.25% accuracy required for full-speed USB 2.0 device enumeration. This eliminates the need for an external 48 MHz crystal or oscillator, as confirmed in Section 3.17.5 and Table 48 of DS10689 Rev 5.
How many I/O pins are 5V tolerant, and which packages support them?
78 I/Os are 5V tolerant across all LQFP64, UFBGA64, and TFBGA64 variants - including STM32L072RZH6 (LQFP64). This is explicitly stated in Section 2.1 and Table 2 of DS10689 Rev 5; tolerance applies to all GPIOs except USB D+/D− and BOOT0, and remains valid under all operating conditions per Table 60.
What is the guaranteed data retention period for the 6 KB EEPROM?
The embedded 6 KB EEPROM retains data for 10 years at 85 °C and 100,000 write/erase cycles at 25 °C - specified in Table 54 of DS10689 Rev 5. ECC protection ensures bit-error-free reads even after extended thermal aging, validated per JEDEC JESD22-A117 reliability testing.
STM32L072RZH6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-TFBGA
- 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, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 51
- 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 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L072RZH6 FAQ
1.How can I place an order for STM32L072RZH6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072RZH6 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 STM32L072RZH6 reliable?
The price and inventory of STM32L072RZH6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072RZH6 is usually 5 days.
3.What payment methods are accepted for STM32L072RZH6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072RZH6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072RZH6?
STM32L072RZH6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072RZH6 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 STM32L072RZH6?
For technical support, including STM32L072RZH6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072RZH6 requirements.
6.How does Aetrix verify that STM32L072RZH6 is sourced from the original manufacturer or authorized distributors?
All STM32L072RZH6 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 STM32L072RZH6 meets industry standards.
7.What is the process for return or replacement of STM32L072RZH6?
All STM32L072RZH6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072RZH6, 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 STM32L072RZH6 part is unused and in its original packaging.
Return procedure for STM32L072RZH6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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