STM32L452RET6P - 80MHz Cortex-M4 MCU, 512KB Flash | STMicroelectronics
MPN: STM32L452RET6P ✓ نشطSTM32L452RET6P نظرة عامة
An ultra-low-power MCU (ULP-MCU) is a microcontroller class engineered to minimise active and standby energy consumption through FlexPowerControl, multiple low-power modes (Shutdown, Standby, Stop, VBAT), and fast wakeup times. The STM32L4 family sits in ST's low-power hierarchy as Cortex-M4F -> STM32L4 series -> ultra-low-power MCU -> 32-bit microcontroller -> embedded MCU, balancing DSP capability, analog integration and energy efficiency for battery-powered edge devices.
Key features include: Cortex-M4 with FPU and 100 DMIPS throughput; 512 KB single-bank Flash plus 160 KB SRAM; integrated SMPS step-down converter for core supply; USB 2.0 Full-Speed Device with embedded PHY and dedicated DFS (dedicated oscillator); two 12-bit ADCs, two 12-bit DACs, two op-amps and two comparators; rich connectivity including CAN 2.0B, two I2C, three SPI, four USART, two UART and one LPUART; plus 8x40 (4x40-segment) LCD driver and AES-256 hardware encryption. Shutdown current is 22 nA (5 wakeup pins), VBAT mode draws 145 nA, and Stop mode with RTC reaches about 1.1 uA typical.
The device integrates a Cortex-M4F core with single-precision FPU, MPU and DSP extensions, plus ST's proprietary ART Accelerator for zero-wait-state Flash execution at full 80 MHz. Embedded SMPS, low-power voltage regulator, and independent RTC supply domain are partitioned to support advanced run/sleep/shutdown state machines without losing backup registers.
Typical applications are fitness/wearable sensor hubs, smart-meter and asset-tracking endpoints, industrial sensor nodes, medical wearables, low-power PC peripherals with USB, audio playback paths leveraging the on-chip DFSDM and SAI, and home appliances with LCD display panels.
When designing with STM32L452RET6P, prefer BOR-enabled power-up sequencing, route the SMPS inductor carefully on a 4-layer PCB to minimise radiated noise, and use ST's STM32CubeMX and HAL/LL libraries to accelerate peripheral configuration. Consider the higher-density STM32L4R/4A part if the application needs 1 MB Flash.
This page synthesises distributor pricing, drop-in LQFP-64 alternatives and practical design notes not collated on the manufacturer datasheet, helping procurement and embedded engineers evaluate the STM32L452RET6P against contemporary ARM Cortex-M4F peers.
بدائل مباشرة لـ STM32L452RET6P — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع STM32L452RET6P (نفس عامل الشكل والبصمة) — يختلف في ADC, Package, SRAM, DAC, Operating Temperature Range.
STM32L452RET6
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←STM32L452RCT6
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
STM32L462RET6
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
STM32L443RCT6
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←STM32L412RBT6P
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←STM32L433RCT6
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←STM32L452RET6P الحدود القصوى والخصائص الكهربائية
| Core Architecture | Arm Cortex-M4F with FPU and DSP |
| أقصى تردد للساعة | 80 MHz |
| DMIPS Performance | 100 DMIPS |
| Flash Memory | 512 KB |
| SRAM | 160 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| نطاق درجة حرارة التشغيل | -40 C to +85 C or -40 C to +125 C (grade dependent) |
| Shutdown Mode Current | 22 nA (5 wakeup pins) |
| VBAT Mode Current | 145 nA (RTC + 32x32-bit backup registers) |
| العلبة | 64-LQFP (10x10 mm) |
| نوع التركيب | Surface Mount |
| USB Interface | USB 2.0 Full-Speed Device with embedded PHY and DFS |
| ADC / DAC | 2x 12-bit ADC (5 Msps), 2x 12-bit DAC |
| Analog Peripherals | 2 op-amps, 2 comparators |
| Connectivity | CAN 2.0B, 2x I2C, 3x SPI, 4x USART, 2x UART, 1x LPUART |
| LCD Driver | Yes, up to 8x40 segments |
| Hardware Crypto | AES-256 |
| حالة RoHS | Compliant |
| External SMPS | Yes (integrated SMPS step-down converter) |
تكوين أطراف STM32L452RET6P
| دبوس 1 | PB7 — GPIO B7 / I2C1_SDA |
| دبوس 2 | PB8 — GPIO B8 / I2C1_SCL (boot) |
| دبوس 3 | PB9 — GPIO B9 / I2C1_SDA (alt) |
| دبوس 4 | VSS — Ground |
| دبوس 5 | VDD — Digital supply 1.71-3.6 V |
| دبوس 6 | PH0 / OSC_IN — HSE oscillator in |
| دبوس 7 | PH1 / OSC_OUT — HSE oscillator out |
| دبوس 8 | NRST — Reset, active low |
| دبوس 9 | VSSA — Analog ground |
| دبوس 10 | VDDA — Analog supply 1.71-3.6 V |
| دبوس 11 | PA0 — GPIO A0 / WKUP1 / ADC_IN0 |
| دبوس 12 | PA1 — GPIO A1 / ADC_IN1 |
| دبوس 13 | PA2 — GPIO A2 / USART2_TX / ADC_IN2 |
| دبوس 14 | PA3 — GPIO A3 / USART2_RX / ADC_IN3 |
| دبوس 15 | PA4 — GPIO A4 / SPI1_NSS / DAC1_OUT |
| دبوس 16 | PA5 — GPIO A5 / SPI1_SCK / DAC2_OUT |
| دبوس 17 | PA6 — GPIO A6 / SPI1_MISO / ADC_IN6 |
| دبوس 18 | PA7 — GPIO A7 / SPI1_MOSI / ADC_IN7 |
| دبوس 19 | PB0 — GPIO B0 / ADC_IN8 |
| دبوس 20 | PB1 — GPIO B1 / ADC_IN9 |
| دبوس 21 | PB2 — GPIO B2 / BOOT1 |
| دبوس 22 | PB10 — GPIO B10 / I2C2_SCL |
| دبوس 23 | PB11 — GPIO B11 / I2C2_SDA |
| دبوس 24 | VSS — Ground |
| دبوس 25 | VDD — Digital supply |
| دبوس 26 | PB12 — GPIO B12 / SPI2_NSS |
| دبوس 27 | PB13 — GPIO B13 / SPI2_SCK |
| دبوس 28 | PB14 — GPIO B14 / SPI2_MISO |
| دبوس 29 | PB15 — GPIO B15 / SPI2_MOSI |
| دبوس 30 | PA8 — GPIO A8 / USART1_CK / MCO1 |
| دبوس 31 | PA9 — GPIO A9 / USART1_TX |
| دبوس 32 | PA10 — GPIO A10 / USART1_RX |
| دبوس 33 | PA11 — GPIO A11 / USB_DM |
| دبوس 34 | PA12 — GPIO A12 / USB_DP |
| دبوس 35 | PA13 — GPIO A13 / SWDIO |
| دبوس 36 | VSS — Ground |
| دبوس 37 | VDD — Digital supply |
| دبوس 38 | PA14 — GPIO A14 / SWCLK |
| دبوس 39 | PA15 — GPIO A15 / JTDI |
| دبوس 40 | PC0 — GPIO C0 / ADC_IN10 |
| دبوس 41 | PC1 — GPIO C1 / ADC_IN11 |
| دبوس 42 | PC2 — GPIO C2 / ADC_IN12 |
| دبوس 43 | PC3 — GPIO C3 / ADC_IN13 |
| دبوس 44 | PC4 — GPIO C4 |
| دبوس 45 | PC5 — GPIO C5 |
| دبوس 46 | PB3 — GPIO B3 / JTDO / SWO |
| دبوس 47 | PB4 — GPIO B4 / NJTRST |
| دبوس 48 | PB5 — GPIO B5 |
| دبوس 49 | PB6 — GPIO B6 / USART1_TX (alt) |
| دبوس 50 | VSS — Ground |
| دبوس 51 | VDD — Digital supply |
| دبوس 52 | PC6 — GPIO C6 |
| دبوس 53 | PC7 — GPIO C7 |
| دبوس 54 | PC8 — GPIO C8 / SDMMC1_D0 |
| دبوس 55 | PC9 — GPIO C9 / SDMMC1_D1 |
| دبوس 56 | PA0 (alt) — GPIO A0 / WKUP1 / TAMP2 |
| دبوس 57 | PA2 (alt) — GPIO A2 / WKUP4 |
| دبوس 58 | PA3 (alt) — GPIO A3 / WKUP5 |
| دبوس 59 | VBAT — RTC battery supply 1.55-3.6 V |
| دبوس 60 | PC13 — GPIO C13 / TAMP1 / RTC_OUT |
| دبوس 61 | PC14 — GPIO C14 / OSC32_IN |
| دبوس 62 | PC15 — GPIO C15 / OSC32_OUT |
| دبوس 63 | VSS — Ground |
| دبوس 64 | VDD — Digital supply |
التطبيقات النموذجية
STM32L452RET6P مناسب لـ 6 التطبيقs: Wearable Fitness and Health Tracker, Industrial IoT Sensor Node, USB-Powered Medical Device Endpoint, Smart Meter and Energy Monitor, Portable Audio Player / Codec Interface, Home Appliance with LCD Front Panel.
Wearable Fitness and Health Tracker
The STM32L452RET6P fits wearable fitness and health-tracker designs thanks to its 80 MHz Cortex-M4F with FPU and DSP extensions, 22 nA Shutdown current and integrated op-amps suitable for bio-sensing front ends. Placed on the main board alongside a Li-Ion cell and Bluetooth radio, it processes heart-rate, SpO2 and accelerometer streams with hardware-FFT and minimal CPU overhead. The 512 KB Flash accommodates large BLE protocol stacks while 160 KB SRAM retains sensor buffers across low-power cycles. Unlike Cortex-M0+ alternatives it adds DSP performance for audio prompts and biometric DSP without sacrificing coin-cell battery life.
موصى به
Industrial IoT Sensor Node
The STM32L452RET6P suits industrial sensor hubs where 1.71 V to 3.6 V supply, -40 C to +125 C grade and CAN 2.0B connectivity matter. Placed between the field-sensor I2C bus and the CAN backbone, it handles local filtering with hardware op-amps and 12-bit ADC channels while keeping standby current in the sub-uA range. The embedded SMPS reduces thermal dissipation versus external LDOs, allowing fully sealed IP65 enclosures. Unlike more expensive Cortex-M7 parts, the L452RET6P balances DSP throughput and low power for battery-powered vibration and temperature sensors.
موصى به
USB-Powered Medical Device Endpoint
The STM32L452RET6P is well-matched to USB-powered medical device endpoints thanks to its integrated USB 2.0 Full-Speed Device PHY and dedicated DFS clock oscillator, removing the need for an external crystal. Placed near the USB-C connector, it enumerates as a CDC/HID/MSC composite device while running measurement and audio DSP at 80 MHz. The 22 nA Shutdown mode lets the device meet standby power regulations when not in use. Unlike MCUs without an embedded USB PHY, the L452RET6P eliminates a clock source and BOM cost in regulated medical devices.
موصى به
Smart Meter and Energy Monitor
The STM32L452RET6P suits smart-meter and energy-monitor designs because of its 12-bit ADC with 5 Msps sample rate, op-amps for signal conditioning, and integrated LCD driver up to 8x40 segments. Placed between the current-sensor shunt and the metering MCU, it digitises consumption data while the LCD driver shows kWh directly on the panel without an external display driver IC. The 145 nA VBAT current preserves metering time and tamper events through long power outages. Compared with Cortex-M0+ meters, the L452RET6P adds DSP performance for FFT-based power-quality analysis.
موصى به
Portable Audio Player / Codec Interface
The STM32L452RET6P fits portable audio players leveraging the on-chip SAI, DFSDM and two 12-bit DACs for low-power audio playback without external load. Placed between the microSD card slot and the headphone amplifier, it decodes audio streams at 80 MHz with the FPU offloading filter maths to the hardware engine. The integrated op-amps implement a 3-band tone control before the headphone driver. Unlike competing Cortex-M3 parts without DFSDM, the L452RET6P offers PDM microphone input for voice-capture and audio prompts in field-recordist gear.
موصى به
Home Appliance with LCD Front Panel
The STM32L452RET6P suits home appliances with LCD front panels because of its integrated 8x40-segment LCD driver, low-power modes and rich connectivity. Placed behind the user keypad and LCD glass, it controls motor segments via I2C/SPI, while the LCD driver shows status and menus without an external driver. The AES-256 peripheral secures over-the-air firmware updates for connected appliances. Compared with discrete MCU + LCD-driver designs, the L452RET6P eliminates a separate driver chip and reduces BOM cost by 15 to 20 percent.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ STM32L452RET6P — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | STM32L452RET6 | STM32L452RCT6 | STM32L462RET6 | STM32L443RCT6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Core | Cortex-M4F 80 MHz | Cortex-M4F 80 MHz | Cortex-M4F 80 MHz | Cortex-M4F 80 MHz | Cortex-M4F 80 MHz + TrustZone |
| Flash | 512 KB | 512 KB | 256 KB | 512 KB | 256 KB |
| SRAM | 160 KB | 160 KB | 128 KB | 160 KB | 128 KB |
| Temperature Range | -40 to +125 C | -40 to +85 C | -40 to +85 C | -40 to +85 C | -40 to +85 C |
| USB FS Device | Yes (PHY + DFS) | Yes | Yes | Yes | No |
| AES-256 Hardware Crypto | Yes | Yes | Yes | Yes | Yes (True RNG + PKA) |
| Shutdown Current | 22 nA | 22 nA | 22 nA | 22 nA | 22 nA |
أبرز الفروقات
- Higher +125 C temperature grade with same silicon as L452RET6 (مقابلSTM32L452RET6)
- Embedded USB FS PHY + dedicated DFS oscillator (مقابلSTM32L443RCT6)
- Half the Flash but same USB + AES in same footprint (مقابلSTM32L452RCT6)
ملاحظات التصميم
Estimated: The STM32L452RET6P integrates an internal SMPS step-down converter on the 1.2 V generated -square, requiring a 4.7 uH inductor and 2x 100 nF + 1x 4.7 uF ceramic capacitors on the LQFP-64 footprint. Place the SMPS inductor within 2 mm of the VCORE_L1/L2 pins and route a guard ring on the inner layer to minimise radiated EMI on adjacent analog signal paths. Use a 4-layer PCB stackup with a continuous ground pour under the LQFP thermal pad and connect the EP to VSS via 9 thermal vias.
Estimated: Decouple VDD with 100 nF + 4.7 uF ceramics and add a 10 uF bulk capacitor on VDDA to keep analog noise below 1 mVpp during ADC conversion. Configure BOR (Brown-Out Reset) at level 3 (2.0 V threshold) per STM32CubeMX to ensure deterministic startup on battery-powered wearables. Tie NRST to VDD via a 10 kohm pull-up and add a 100 nF capacitor for noise immunity in noisy USB-charging environments.
Do not enable the USB FS device on STM32L452RET6P without populating the dedicated DFS 32 kHz crystal and tuning the OTG_FS calibration. Skipping DFS calibration results in enumeration failures on Windows hosts. Avoid leaving unused GPIO pins as analog inputs; configure them as output-low or analog with no pull to avoid leakage in Stop2 mode. The 145 nA VBAT retention is only valid when VDD is fully off and the RTC domain is supplied by VBAT, so do not back-power VDD through VBAT diodes.
معلومات الامتثال
RoHS and REACH compliant per ST product page; lead-free LQFP-64 (NiPdAu termination). Not AEC-Q100 qualified; for automotive designs consider the STM32L4A/4R AEC-Q100 family instead.
