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STMicroelectronics STM32L4R5AII6
- Part No.:
- STM32L4R5AII6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 169-UFBGA
- Datasheet:
-
STM32L4R5AII6.pdf
- Description:
- IC MCU 32BIT 2MB FLASH 169UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,210
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Product details
Overview
STM32L4R5AII6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 120 MHz max frequency, 2 MB Flash, 640 KB SRAM, and integrated MIPI DSI host controller + LCD-TFT controller - designed for battery-powered graphical HMI applications in industrial handhelds and medical monitors.
For engineers reviewing the STM32L4R5AII6 datasheet, STM32L4R5AII6 pinout, STM32L4R5AII6 application, or STM32L4R5AII6 equivalent, key selection criteria include ultra-low-power run/stop modes (43 µA/MHz @ SMPS), dual-bank read-while-write Flash, hardware-accelerated graphics (DMA2D + GFXMMU), and 136 I/Os with 5 V tolerance and independent 1.08 V supply capability.
Technical Context
This MCU integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, alongside a multi-AHB interconnect matrix that decouples CPU, DMA, and peripheral bus access to sustain high throughput during concurrent operations like DSI video streaming and sensor data acquisition.
Its power architecture features three voltage regulation paths - internal LDO, external SMPS support, and VDDIO2 independent supply - allowing dynamic scaling of I/O voltage down to 1.08 V while maintaining core operation, critical for mixed-voltage system integration and EMI reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 120 MHz max, 150 DMIPS, DSP instructions, MPU |
| Memory | 2 MB dual-bank Flash (read-while-write), 640 KB SRAM (64 KB with parity) |
| Power Modes | 43 µA/MHz Run (SMPS), 2.8 µA Stop2 with RTC, 33 nA Shutdown (5 wakeup pins) |
| Graphics | MIPI DSI host (2 lanes, 500 Mbit/s each), LCD-TFT controller, Chrom-ART (DMA2D), Chrom-GRC (GFXMMU) |
| Analog | 12-bit ADC @ 5 Msps (16-bit oversampling), 2× 12-bit DAC, 2× op-amps with PGA, 2× comparators |
| Peripherals | 20 communication interfaces including USB OTG FS, CAN 2.0B, SDMMC, 6× USART, 4× I²C, 3× SPI, 2× SAI |
| Package | UFBGA132 (7 × 7 mm, 0.4 mm pitch), 132-pin ball grid array |
Pinout & Package
STM32L4R5AII6 is housed in a 132-ball UFBGA package (7 × 7 mm, 0.4 mm pitch) with 119 user I/Os and dedicated power/ground balls. Pin functions are defined per STM32L4R5xx datasheet Section 4 (Pinouts and pin description), with full alternate function mapping across AF0–AF15.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | VDD (1.71–3.6 V core/analog), VDDA (analog domain), VDDIO2 (independent I/O supply down to 1.08 V) |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 136 total fast I/Os; most 5 V-tolerant; up to 14 support VDDIO2 for mixed-voltage interfacing |
| PH13–PH15, PI0–PI12 | MIPI DSI interface | Dedicated DSI clock/data lanes (CLKP/N, DAT0P/N, DAT1P/N) supporting 500 Mbit/s per lane |
| PF0–PF15, PG0–PG15 | LCD-TFT controller outputs | 24-bit RGB interface + HSYNC/VSYNC/DE/CLK signals for direct TFT panel driving |
| PC13–PC15 | RTC subsystem | PC13 (RTC_OUT), PC14/PC15 (32 kHz LSE crystal connections for calendar-grade timekeeping) |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 33 nA shutdown mode with 5 wakeup pins and 5 µs wake-up from Stop - ideal for intermittent sensing nodes |
| Chrom-ART Accelerator (DMA2D) | Offloads 2D graphic rendering (copy, fill, blend) from CPU, reducing active time and power by up to 40% in GUI workloads |
| GFXMMU (Chrom-GRC) | Provides virtual-to-physical address translation for graphics buffers, enabling efficient use of fragmented SRAM and up to 20% resource optimization |
| Dual OctoSPI interfaces | Supports XIP and memory-mapped execution from external flash/PSRAM, expanding effective code space beyond on-chip Flash limits |
| Hardware crypto & RNG | Includes AES-128/192/256, HASH (SHA-1/SHA-224/SHA-256), and true random number generator - certified for secure boot and firmware updates |
Applications
| Industrial Handheld Terminal | Portable Medical Monitor |
|---|---|
Use Scenario: Ruggedized field device with color TFT display, capacitive touch, and wireless telemetry. IC Role / Device Role / Timing Role: Main application processor managing DSI-driven display, touch sensing (24-channel TSC), and BLE/Wi-Fi coexistence via UART/USB. Use Value: Dual-bank Flash enables seamless firmware updates without display interruption; 43 µA/MHz SMPS mode extends battery life to >12 hours on 2000 mAh Li-ion. | Use Scenario: Battery-powered vital signs monitor with real-time waveform rendering and alarm-triggered data logging. IC Role / Device Role / Timing Role: Real-time signal processor handling ADC sampling (5 Msps), waveform generation (DAC), and LCD-TFT display refresh at 60 Hz. Use Value: ART Accelerator ensures deterministic 120 MHz execution for time-critical ECG analysis; 64 KB SRAM with parity guarantees data integrity during patient monitoring. |
| Smart Energy Meter HMI | IoT Gateway Edge Node |
Use Scenario: DIN-rail mounted meter with segmented LCD + optional color TFT overlay for tariff visualization and tamper alerts. IC Role / Device Role / Timing Role: HMI controller interfacing to metrology IC via SPI, driving display via LTDC, and managing secure OTA updates over CAN/LPUART. Use Value: VDDIO2 support allows direct connection to 1.8 V metrology ICs; hardware crypto accelerates AES-128 encryption of consumption logs before storage. | Use Scenario: Low-power edge gateway aggregating sensor data from Modbus/RS-485, LoRaWAN, and BLE peripherals. IC Role / Device Role / Timing Role: Central protocol translator running FreeRTOS, managing concurrent UART (Modbus), SPI (LoRa), and USB (debug/config) stacks. Use Value: 136 I/Os enable flexible peripheral expansion; Stop2 mode (2.8 µA with RTC) maintains time-synchronized polling while minimizing quiescent current. |
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 |
|---|---|---|---|
| STM32L4R5ZIY6 | LQFP144 (20 × 20 mm), 144 pins, same core/peripherals but larger footprint and no VDDIO2 support | Better suited for prototyping and PCBs with less density constraint; lacks independent I/O supply for mixed-voltage designs | Select when board layout favors QFP, debug access is prioritized, or VDDIO2 functionality is unnecessary |
| STM32L4R9AII6 | Same UFBGA132 package, adds Chrom-ART + GFXMMU + DSI + LTDC, but with 2 MB Flash and 640 KB SRAM identical to STM32L4R5AII6 | No functional difference - STM32L4R9AII6 is pin- and software-compatible; differs only in factory-programmed option bits (R9 = full feature set enabled) | Select STM32L4R9AII6 if full graphics acceleration and DSI capabilities must be guaranteed at shipment; otherwise STM32L4R5AII6 offers identical silicon |
Compared with STM32L4R5ZIY6, the STM32L4R5AII6 enables higher-density layouts and mixed-voltage I/O interfacing; compared with STM32L4R9AII6, it shares identical hardware but may require runtime enablement of certain graphics features depending on production configuration.
Availability
STM32L4R5AII6 is available at Aetrix Electronics and suitable for industrial handheld terminals, portable medical monitors, smart energy meter HMIs, and IoT gateway edge nodes requiring stable component supply across extended product lifecycles.
Supply support for STM32L4R5AII6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM32L4 series targets ultra-low-power embedded applications demanding rich peripherals, graphics capability, and long battery life - particularly in portable medical, industrial HMI, and smart metering systems.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L4R5AII6 achieves 120 MHz maximum CPU frequency. In Run mode with ART Accelerator enabled and power supplied by external SMPS, it consumes 43 µA per MHz at 3.3 V - measured with code executing from Flash in single-bank configuration, cache ON and prefetch OFF.
Does STM32L4R5AII6 support external memory interfaces beyond OctoSPI?
Yes - it includes a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, NAND, and FRAM memories with address/data multiplexing, in addition to two independent OctoSPI interfaces for high-speed serial flash or RAM expansion.
How many I/Os support independent VDDIO2 supply, and what is the minimum voltage?
Up to 14 I/Os (configured via SYSCFG registers) can be powered by the VDDIO2 supply rail, which operates down to 1.08 V - enabling direct interfacing with low-voltage peripherals such as 1.2 V or 1.8 V sensors, FPGAs, or metrology ICs without level shifters.
Is the MIPI DSI interface capable of driving standard display panels, and what is its electrical compliance?
Yes - the DSI Host controller supports MIPI D-PHY v1.2 compliant signaling with two data lanes and one clock lane, operating at up to 500 Mbit/s per lane. It meets MIPI Alliance specifications for HS (High-Speed) and LP (Low-Power) modes, and has been validated with common DSI display modules including Raydium RM68200 and Novatek NT35510.
STM32L4R5AII6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 169-UFBGA
- Series:
- STM32L4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 120MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 112
- Program Memory Size:
- 2MB (2M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 640K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 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:
STM32L4R5AII6 FAQ
1.How can I place an order for STM32L4R5AII6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L4R5AII6 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 STM32L4R5AII6 reliable?
The price and inventory of STM32L4R5AII6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L4R5AII6 is usually 5 days.
3.What payment methods are accepted for STM32L4R5AII6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L4R5AII6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L4R5AII6?
STM32L4R5AII6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L4R5AII6 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 STM32L4R5AII6?
For technical support, including STM32L4R5AII6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L4R5AII6 requirements.
6.How does Aetrix verify that STM32L4R5AII6 is sourced from the original manufacturer or authorized distributors?
All STM32L4R5AII6 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 STM32L4R5AII6 meets industry standards.
7.What is the process for return or replacement of STM32L4R5AII6?
All STM32L4R5AII6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L4R5AII6, 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 STM32L4R5AII6 part is unused and in its original packaging.
Return procedure for STM32L4R5AII6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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