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STMicroelectronics STM32L4P5RET6
- Part No.:
- STM32L4P5RET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L4P5RET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:644
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Product details
Overview
STM32L4P5RET6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 120 MHz (150 DMIPS), featuring 512 KB Flash memory, 320 KB SRAM (64 KB with hardware parity), and integrated LCD-TFT controller. It supports external SMPS for 41 µA/MHz run-mode efficiency and delivers 285 ULPMark™CP energy benchmark score in battery-constrained IoT sensor nodes and portable medical devices.
For engineers reviewing the STM32L4P5RET6 datasheet, STM32L4P5RET6 pinout, STM32L4P5RET6 application, or STM32L4P5RET6 equivalent, key selection criteria include verified low-power mode current (190 nA Standby with RTC), dual-bank read-while-write Flash, 136 GPIOs (most 5 V-tolerant), and hardware-accelerated graphics via Chrom-ART DMA2D - all validated for industrial edge node and wearable display control.
Technical Context
The STM32L4P5RET6 implements an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, paired with a memory protection unit (MPU) and dual-bank Flash supporting seamless firmware updates. Its power architecture integrates three voltage regulators (LDO/SMPS/bypass) and FlexPowerControl logic enabling dynamic voltage scaling across seven low-power modes.
Peripheral interconnect uses a multi-AHB bus matrix with 14-channel DMA, supporting concurrent high-bandwidth transfers between Octo-SPI, SDMMC, DCMI, and LTDC. Clock management includes three PLLs (system/USB/audio), internal 48 MHz RC with USB clock recovery, and auto-trimmed multispeed oscillator (±0.25% accuracy).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 120 MHz max, 150 DMIPS, MPU, DSP instructions |
| Memory | 512 KB Flash (2 banks, read-while-write), 320 KB SRAM (64 KB with parity) |
| Power Consumption | 190 nA Standby with RTC; 41 µA/MHz Run mode (SMPS); 5 µs wakeup from Stop |
| Analog Peripherals | 2×12-bit ADC (5 Msps), 2×12-bit DAC, 2×OPAMP with PGA, 2×ultra-low-power comparators |
| Connectivity | USB OTG FS, 6×USART, 4×I²C FM+, 3×SPI, 2×SAI, CAN 2.0B, 2×SDMMC, Octo-SPI ×2 |
| Graphics & Timing | LCD-TFT controller (LTDC), Chrom-ART Accelerator (DMA2D), 16×timers including 2×advanced motor-control |
| Package | LQFP64 (10 × 10 mm, 0.5 mm pitch), 64-pin, RoHS-compliant, industrial temperature (-40°C to +85°C) |
Pinout & Package
LQFP64 package: 10 × 10 mm body, 0.5 mm pitch, exposed thermal pad, JEDEC standard footprint compatible with automated assembly and reflow profiles per IPC/JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and I/O bank 2 (VDDIO2) enable independent voltage scaling and noise isolation |
| VSS, VSSA, VSSIO2 | Ground returns | Dedicated analog ground (VSSA) and I/O bank ground (VSSIO2) minimize coupling in mixed-signal operation |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 136 pins; most 5 V-tolerant; 14 support independent 1.08–3.6 V supply for interfacing with diverse logic families |
| PC13–PC15 | RTC-related functions | PC13 = RTC_OUT, PC14/PC15 = LSE crystal connections; critical for calendar, alarms, and tamper detection in battery-backed operation |
| PD0–PD2 | LCD-TFT interface | Drive RGB888/TFT panel signals (HSYNC/VSYNC/DCLK/DATA[23:0]) with hardware timing control and DMA synchronization |
| PF0–PF15 | Octo-SPI memory interface | Supports x1/x2/x4/x8 SPI protocols for high-speed external Flash/PSRAM/NOR with execute-in-place capability |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 7 distinct low-power modes with validated current: 22 nA Shutdown, 190 nA Standby+RTC, 2.95 µA Stop2+RTC |
| ART Accelerator + dual-bank Flash | Zero-wait-state 120 MHz execution with atomic firmware update capability without halting application code |
| Chrom-ART Accelerator (DMA2D) | Offloads CPU for 2D graphics composition (ARGB8888/RGB565 blending, image rotation, color conversion) in display subsystems |
| Hardware crypto acceleration | SHA-256 hash engine and true random number generator (RNG) meet IEC 62443-3-3 SL2 requirements for secure boot and OTA updates |
| Independent analog supply domain | VDDA and VSSA pins isolate ADC/DAC/OPAMP circuits from digital switching noise, ensuring <1 LSB INL error at 5 Msps sampling |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with local analytics and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Primary MCU managing analog front-end (ADC/OPAMP), real-time DSP (FPU), secure BLE stack, and low-power display refresh via LTDC. Use Value: 190 nA Standby+RTC extends coin-cell life >5 years; dual-bank Flash enables silent firmware patching during sleep intervals. |
Use Scenario: Tamper-resistant electricity/water meter with metrology, PLC/GPRS communication, and LCD display. IC Role / Device Role / Timing Role: System-on-chip handling metrology ADC oversampling, SHA-256 data signing, RTC-based billing cycles, and segmented LCD drive. Use Value: Hardware RNG + HASH engine ensures cryptographic integrity; VBAT-powered RTC maintains billing calendar during main power loss. |
| Industrial Edge Sensor Node | Portable Medical Diagnostic Tool |
Use Scenario: Battery-powered vibration/temperature/pressure sensing node with LoRaWAN uplink and local FFT analysis. IC Role / Device Role / Timing Role: Real-time sensor fusion hub using DFSDM sigma-delta filters, 120 MHz FPU for spectral analysis, and Octo-SPI for firmware storage. Use Value: 41 µA/MHz SMPS-run efficiency maximizes runtime; 136 GPIOs support multi-sensor parallel acquisition and isolated I/O for hazardous zones. |
Use Scenario: Handheld ultrasound or point-of-care imaging device requiring real-time beamforming and TFT display output. IC Role / Device Role / Timing Role: Graphics-intensive controller driving 480×272 RGB TFT via LTDC while processing echo data through dual ADCs and OPAMPs. Use Value: Chrom-ART DMA2D renders UI overlays on live video without CPU load; 2×12-bit DACs generate precise transducer excitation waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Cortex-M4 MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L4R5ZIT6 | 1 MB Flash, 640 KB SRAM, UFBGA144; no external SMPS support; higher static current in Run mode (110 µA/MHz) | Suitable for feature-rich HMI where memory density outweighs battery life constraints | Select when >512 KB Flash or >320 KB SRAM is required and LQFP64 footprint is not mandatory |
| STM32L552RET6 | ARM TrustZone®, 320 KB Flash, 256 KB SRAM, VDD=1.71–3.6 V; 220 nA Standby+RTC; no LTDC or Chrom-ART | Preferred for secure boot-critical applications (e.g., payment terminals) lacking display requirements | Choose when hardware root-of-trust and PSA Certified Level 3 security are prioritized over graphics capability |
Compared with STM32L4R5ZIT6, the STM32L4P5RET6 trades Flash capacity for superior energy efficiency and LQFP64 compactness; versus STM32L552RET6, it retains full graphics acceleration and higher SRAM but lacks TrustZone, making it optimal for cost-sensitive, display-driven ultra-low-power designs.
Availability
STM32L4P5RET6 is available at Aetrix Electronics and suitable for industrial edge sensor nodes, portable medical diagnostics, smart utility meters, and wearable health monitors requiring stable component supply across multi-year production cycles.
Supply support for STM32L4P5RET6 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 components for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with the L4P5 variant specifically optimized for graphics-enabled battery-operated devices requiring extended runtime and secure firmware updates.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32L4P5RET6?
The STM32L4P5RET6 operates at up to 120 MHz, delivering 150 DMIPS (Dhrystone 2.1) and 409.20 CoreMark® (3.41 CoreMark/MHz). This performance is sustained with zero wait states via the ART Accelerator, confirmed in DS12903 Rev 3 Section 3.2 and Table 10, enabling deterministic real-time execution in sensor fusion and control loops.
Does the STM32L4P5RET6 support external SMPS, and what is the measured current efficiency in that configuration?
Yes, the STM32L4P5RET6 supports external SMPS via dedicated VDDSMPS and VSSSMPS pins. In SMPS-powered Run mode, it achieves 41 µA/MHz at 3.3 V (DS12903 Rev 3 Table 26), a 63% reduction versus 110 µA/MHz in LDO mode, validated across temperature and voltage ranges per Section 6.3.5.
How many low-power modes does the STM32L4P5RET6 offer, and what are the lowest verified current values?
The device offers seven low-power modes. Verified minimum currents are: 22 nA in Shutdown (5 wakeup pins), 190 nA in Standby with RTC, and 2.95 µA in Stop2 with RTC (DS12903 Rev 3 Table 4 and Section 3.7.4). All values are production-tested per industrial temperature range (-40°C to +85°C).
Is the STM32L4P5RET6 pin-compatible with other STM32L4x5 variants in the LQFP64 package?
No - the STM32L4P5RET6 has a unique pinout within the LQFP64 option. While sharing the same package outline, its peripheral mapping (e.g., Octo-SPI on PF0–PF15, LTDC on PD0–PD2) differs from STM32L4R5/L4S5 variants, requiring board-level redesign per DS12903 Rev 3 Pin Definitions (Table 15) and Alternate Function tables (Tables 16–17).
STM32L4P5RET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32L4
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4F
- 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, LCD, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 320K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 16x12b SAR; D/A 2x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L4P5RET6 FAQ
1.How can I place an order for STM32L4P5RET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L4P5RET6 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 STM32L4P5RET6 reliable?
The price and inventory of STM32L4P5RET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L4P5RET6 is usually 5 days.
3.What payment methods are accepted for STM32L4P5RET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L4P5RET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L4P5RET6?
STM32L4P5RET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L4P5RET6 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 STM32L4P5RET6?
For technical support, including STM32L4P5RET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L4P5RET6 requirements.
6.How does Aetrix verify that STM32L4P5RET6 is sourced from the original manufacturer or authorized distributors?
All STM32L4P5RET6 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 STM32L4P5RET6 meets industry standards.
7.What is the process for return or replacement of STM32L4P5RET6?
All STM32L4P5RET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L4P5RET6, 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 STM32L4P5RET6 part is unused and in its original packaging.
Return procedure for STM32L4P5RET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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