STM32L452RET6P - 80MHz Cortex-M4 MCU, 512KB Flash | STMicroelectronics
Teilenummer: STM32L452RET6P ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $8.92 | $8,92 |
| 10 | $8.04 | $80,40 |
| 100 | $7.21 | $721,00 |
| 500 | $6.43 | $3.215,00 |
| 1.000 | $5.62 | $5.620,00 |
STM32L452RET6P Übersicht
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.
Drop-in-Alternativen für STM32L452RET6P – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit STM32L452RET6P (gleiche Bauform und Footprint) – abweichend in ADC, Package, SRAM, DAC, Operating Temperature Range.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
STM32L452RET6
✅ Drop-In✓ Auf Lager
$4.95 / Stück
Datenblatt ansehen →STM32L452RCT6
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
STM32L462RET6
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
STM32L443RCT6
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.1 / Stück
Datenblatt ansehen →STM32L412RBT6P
✅ Drop-In✓ Auf Lager
$3.35 / Stück
Datenblatt ansehen →STM32L433RCT6
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.44 / Stück
Datenblatt ansehen →STM32L452RET6P Grenzwerte & elektrische Eigenschaften
| Core Architecture | Arm Cortex-M4F with FPU and DSP |
| Maximale Taktfrequenz | 80 MHz |
| DMIPS Performance | 100 DMIPS |
| Flash Memory | 512 KB |
| SRAM | 160 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Betriebstemperaturbereich | -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) |
| Gehäuse | 64-LQFP (10x10 mm) |
| Montageart | 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 |
| RoHS-Status | Compliant |
| External SMPS | Yes (integrated SMPS step-down converter) |
STM32L452RET6P Pin-Konfiguration
| Pin 1 | PB7 — GPIO B7 / I2C1_SDA |
| Pin 2 | PB8 — GPIO B8 / I2C1_SCL (boot) |
| Pin 3 | PB9 — GPIO B9 / I2C1_SDA (alt) |
| Pin 4 | VSS — Ground |
| Pin 5 | VDD — Digital supply 1.71-3.6 V |
| Pin 6 | PH0 / OSC_IN — HSE oscillator in |
| Pin 7 | PH1 / OSC_OUT — HSE oscillator out |
| Pin 8 | NRST — Reset, active low |
| Pin 9 | VSSA — Analog ground |
| Pin 10 | VDDA — Analog supply 1.71-3.6 V |
| Pin 11 | PA0 — GPIO A0 / WKUP1 / ADC_IN0 |
| Pin 12 | PA1 — GPIO A1 / ADC_IN1 |
| Pin 13 | PA2 — GPIO A2 / USART2_TX / ADC_IN2 |
| Pin 14 | PA3 — GPIO A3 / USART2_RX / ADC_IN3 |
| Pin 15 | PA4 — GPIO A4 / SPI1_NSS / DAC1_OUT |
| Pin 16 | PA5 — GPIO A5 / SPI1_SCK / DAC2_OUT |
| Pin 17 | PA6 — GPIO A6 / SPI1_MISO / ADC_IN6 |
| Pin 18 | PA7 — GPIO A7 / SPI1_MOSI / ADC_IN7 |
| Pin 19 | PB0 — GPIO B0 / ADC_IN8 |
| Pin 20 | PB1 — GPIO B1 / ADC_IN9 |
| Pin 21 | PB2 — GPIO B2 / BOOT1 |
| Pin 22 | PB10 — GPIO B10 / I2C2_SCL |
| Pin 23 | PB11 — GPIO B11 / I2C2_SDA |
| Pin 24 | VSS — Ground |
| Pin 25 | VDD — Digital supply |
| Pin 26 | PB12 — GPIO B12 / SPI2_NSS |
| Pin 27 | PB13 — GPIO B13 / SPI2_SCK |
| Pin 28 | PB14 — GPIO B14 / SPI2_MISO |
| Pin 29 | PB15 — GPIO B15 / SPI2_MOSI |
| Pin 30 | PA8 — GPIO A8 / USART1_CK / MCO1 |
| Pin 31 | PA9 — GPIO A9 / USART1_TX |
| Pin 32 | PA10 — GPIO A10 / USART1_RX |
| Pin 33 | PA11 — GPIO A11 / USB_DM |
| Pin 34 | PA12 — GPIO A12 / USB_DP |
| Pin 35 | PA13 — GPIO A13 / SWDIO |
| Pin 36 | VSS — Ground |
| Pin 37 | VDD — Digital supply |
| Pin 38 | PA14 — GPIO A14 / SWCLK |
| Pin 39 | PA15 — GPIO A15 / JTDI |
| Pin 40 | PC0 — GPIO C0 / ADC_IN10 |
| Pin 41 | PC1 — GPIO C1 / ADC_IN11 |
| Pin 42 | PC2 — GPIO C2 / ADC_IN12 |
| Pin 43 | PC3 — GPIO C3 / ADC_IN13 |
| Pin 44 | PC4 — GPIO C4 |
| Pin 45 | PC5 — GPIO C5 |
| Pin 46 | PB3 — GPIO B3 / JTDO / SWO |
| Pin 47 | PB4 — GPIO B4 / NJTRST |
| Pin 48 | PB5 — GPIO B5 |
| Pin 49 | PB6 — GPIO B6 / USART1_TX (alt) |
| Pin 50 | VSS — Ground |
| Pin 51 | VDD — Digital supply |
| Pin 52 | PC6 — GPIO C6 |
| Pin 53 | PC7 — GPIO C7 |
| Pin 54 | PC8 — GPIO C8 / SDMMC1_D0 |
| Pin 55 | PC9 — GPIO C9 / SDMMC1_D1 |
| Pin 56 | PA0 (alt) — GPIO A0 / WKUP1 / TAMP2 |
| Pin 57 | PA2 (alt) — GPIO A2 / WKUP4 |
| Pin 58 | PA3 (alt) — GPIO A3 / WKUP5 |
| Pin 59 | VBAT — RTC battery supply 1.55-3.6 V |
| Pin 60 | PC13 — GPIO C13 / TAMP1 / RTC_OUT |
| Pin 61 | PC14 — GPIO C14 / OSC32_IN |
| Pin 62 | PC15 — GPIO C15 / OSC32_OUT |
| Pin 63 | VSS — Ground |
| Pin 64 | VDD — Digital supply |
Typische Anwendungen
STM32L452RET6P ist geeignet für 6 Anwendungs: 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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für STM32L452RET6P – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | 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 |
Wichtigste Unterscheidungsmerkmale
- Higher +125 C temperature grade with same silicon as L452RET6 (vs. STM32L452RET6)
- Embedded USB FS PHY + dedicated DFS oscillator (vs. STM32L443RCT6)
- Half the Flash but same USB + AES in same footprint (vs. STM32L452RCT6)
Designhinweise
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.
Compliance-Informationen
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.
