STM32L452RET6P - 80MHz Cortex-M4 MCU, 512KB Flash | STMicroelectronics
部品番号: STM32L452RET6P ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 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 概要
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.
ドロップイン代替品: STM32L452RET6P — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM32L452RET6P （同一形状・フットプリント） — 相違点: ADC, Package, SRAM, DAC, Operating Temperature Range.
クイック比較ツール — 並列比較する代替部品を選択:
STM32L452RET6
✅ ドロップイン✓ 在庫あり
$4.95 / 個
データシートを見る →STM32L452RCT6
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32L462RET6
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32L443RCT6
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$5.1 / 個
データシートを見る →STM32L412RBT6P
✅ ドロップイン✓ 在庫あり
$3.35 / 個
データシートを見る →STM32L433RCT6
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$5.44 / 個
データシートを見る →STM32L452RET6P 最大定格＆電気的特性
| Core Architecture | Arm Cortex-M4F with FPU and DSP |
| 最大クロック周波数 | 80 MHz |
| DMIPS Performance | 100 DMIPS |
| Flash Memory | 512 KB |
| SRAM | 160 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| 動作温度範囲 | -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) |
| パッケージ | 64-LQFP (10x10 mm) |
| 実装タイプ | 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 ステータス | Compliant |
| External SMPS | Yes (integrated SMPS step-down converter) |
STM32L452RET6P ピン構成
| ピン 1 | PB7 — GPIO B7 / I2C1_SDA |
| ピン 2 | PB8 — GPIO B8 / I2C1_SCL (boot) |
| ピン 3 | PB9 — GPIO B9 / I2C1_SDA (alt) |
| ピン 4 | VSS — Ground |
| ピン 5 | VDD — Digital supply 1.71-3.6 V |
| ピン 6 | PH0 / OSC_IN — HSE oscillator in |
| ピン 7 | PH1 / OSC_OUT — HSE oscillator out |
| ピン 8 | NRST — Reset, active low |
| ピン 9 | VSSA — Analog ground |
| ピン 10 | VDDA — Analog supply 1.71-3.6 V |
| ピン 11 | PA0 — GPIO A0 / WKUP1 / ADC_IN0 |
| ピン 12 | PA1 — GPIO A1 / ADC_IN1 |
| ピン 13 | PA2 — GPIO A2 / USART2_TX / ADC_IN2 |
| ピン 14 | PA3 — GPIO A3 / USART2_RX / ADC_IN3 |
| ピン 15 | PA4 — GPIO A4 / SPI1_NSS / DAC1_OUT |
| ピン 16 | PA5 — GPIO A5 / SPI1_SCK / DAC2_OUT |
| ピン 17 | PA6 — GPIO A6 / SPI1_MISO / ADC_IN6 |
| ピン 18 | PA7 — GPIO A7 / SPI1_MOSI / ADC_IN7 |
| ピン 19 | PB0 — GPIO B0 / ADC_IN8 |
| ピン 20 | PB1 — GPIO B1 / ADC_IN9 |
| ピン 21 | PB2 — GPIO B2 / BOOT1 |
| ピン 22 | PB10 — GPIO B10 / I2C2_SCL |
| ピン 23 | PB11 — GPIO B11 / I2C2_SDA |
| ピン 24 | VSS — Ground |
| ピン 25 | VDD — Digital supply |
| ピン 26 | PB12 — GPIO B12 / SPI2_NSS |
| ピン 27 | PB13 — GPIO B13 / SPI2_SCK |
| ピン 28 | PB14 — GPIO B14 / SPI2_MISO |
| ピン 29 | PB15 — GPIO B15 / SPI2_MOSI |
| ピン 30 | PA8 — GPIO A8 / USART1_CK / MCO1 |
| ピン 31 | PA9 — GPIO A9 / USART1_TX |
| ピン 32 | PA10 — GPIO A10 / USART1_RX |
| ピン 33 | PA11 — GPIO A11 / USB_DM |
| ピン 34 | PA12 — GPIO A12 / USB_DP |
| ピン 35 | PA13 — GPIO A13 / SWDIO |
| ピン 36 | VSS — Ground |
| ピン 37 | VDD — Digital supply |
| ピン 38 | PA14 — GPIO A14 / SWCLK |
| ピン 39 | PA15 — GPIO A15 / JTDI |
| ピン 40 | PC0 — GPIO C0 / ADC_IN10 |
| ピン 41 | PC1 — GPIO C1 / ADC_IN11 |
| ピン 42 | PC2 — GPIO C2 / ADC_IN12 |
| ピン 43 | PC3 — GPIO C3 / ADC_IN13 |
| ピン 44 | PC4 — GPIO C4 |
| ピン 45 | PC5 — GPIO C5 |
| ピン 46 | PB3 — GPIO B3 / JTDO / SWO |
| ピン 47 | PB4 — GPIO B4 / NJTRST |
| ピン 48 | PB5 — GPIO B5 |
| ピン 49 | PB6 — GPIO B6 / USART1_TX (alt) |
| ピン 50 | VSS — Ground |
| ピン 51 | VDD — Digital supply |
| ピン 52 | PC6 — GPIO C6 |
| ピン 53 | PC7 — GPIO C7 |
| ピン 54 | PC8 — GPIO C8 / SDMMC1_D0 |
| ピン 55 | PC9 — GPIO C9 / SDMMC1_D1 |
| ピン 56 | PA0 (alt) — GPIO A0 / WKUP1 / TAMP2 |
| ピン 57 | PA2 (alt) — GPIO A2 / WKUP4 |
| ピン 58 | PA3 (alt) — GPIO A3 / WKUP5 |
| ピン 59 | VBAT — RTC battery supply 1.55-3.6 V |
| ピン 60 | PC13 — GPIO C13 / TAMP1 / RTC_OUT |
| ピン 61 | PC14 — GPIO C14 / OSC32_IN |
| ピン 62 | PC15 — GPIO C15 / OSC32_OUT |
| ピン 63 | VSS — Ground |
| ピン 64 | VDD — Digital supply |
主な用途
STM32L452RET6P の用途: 6 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM32L452RET6P — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- 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)
設計ノート
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.
コンプライアンス情報
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.
