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STMicroelectronics STM32F423RHT6
- Part No.:
- STM32F423RHT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F423RHT6.pdf
- Description:
- IC MCU 32BIT 1.5MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:255
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Product details
Overview
STM32F423RHT6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 100 MHz max CPU frequency, 1.5 MB flash, 320 KB SRAM, and integrated USB OTG FS, dual DACs, and AES hardware encryption. It targets embedded control with audio processing, sensor fusion, and secure connectivity in industrial HMI and portable medical devices.
For engineers reviewing the STM32F423RHT6 datasheet, STM32F423RHT6 pinout, STM32F423RHT6 application, or STM32F423RHT6 equivalent, key selection criteria include its 100 MHz real-time performance with ART Accelerator™, 12-bit 2.4 MSPS ADC + 2×12-bit DACs for analog I/O, DFSDM support for PDM microphone arrays, and low-power Stop mode (15 µA typ.) for battery-operated systems.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 100 MHz, and features eBAM (enhanced Batch Acquisition Mode) for deterministic analog acquisition. Its memory subsystem includes 1.5 MB flash with 512-byte OTP, 320 KB SRAM, and flexible external memory controller supporting NOR/PSRAM.
Peripherals include three CAN 2.0B controllers, one SAI interface, five SPI/I2S channels (two full-duplex I2S), SDIO, and a dedicated DFSDM block with six digital sigma-delta filters and 12x PDM inputs - optimized for stereo microphone arrays and sound source localization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 100 MHz max - enables real-time DSP and floating-point math without external coprocessor |
| Flash / RAM | 1.5 MB flash, 320 KB SRAM - supports complex firmware, OTA updates, and large audio buffers |
| Analog Peripherals | 1×12-bit 2.4 MSPS ADC (16 ch), 2×12-bit DACs - suitable for high-fidelity sensor signal conditioning and waveform generation |
| Digital Filters | 6× DFSDM channels, 12× PDM interfaces - enables direct connection to MEMS microphones without external decimation logic |
| Security & Crypto | Hardware AES-128/256, TRNG, 96-bit unique ID - meets basic requirements for firmware integrity and secure boot |
| Power Efficiency | Stop mode: 15 µA typ. (Deep power down), Standby: 1.1 µA typ. - extends battery life in always-on edge nodes |
| USB Interface | USB 2.0 Full-Speed OTG with integrated PHY - allows host/device role switching and direct PC or peripheral connectivity |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 51 general-purpose I/Os, 11 5V-tolerant pins, and dedicated VCAP_1/VCAP_2 decoupling terminals for internal regulator stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | 1.7–3.6 V operation; requires local 100 nF + 4.7 µF decoupling per VDD pair |
| VCAP_1, VCAP_2 | Internal LDO stabilization | Must connect 2.2 µF ceramic capacitors to GND; critical for core voltage regulation stability |
| PA0–PA15, PB0–PB15, etc. | GPIO with multiple alternate functions | 51 configurable I/Os; up to 109 support 50 MHz toggle, 114 are 5V-tolerant |
| PA12/PA11 | USB DP/DM | Dedicated full-speed USB transceiver pins; require 1.5 kΩ pull-up on PA12 for device enumeration |
| PC0–PC5 | ADC1_IN0–IN5 | Analog input channels mapped to 12-bit ADC; support differential mode and hardware oversampling |
| PA4/PA5 | DAC_OUT1/DAC_OUT2 | Two independent buffered voltage outputs; each supports noise shaping and wave generation |
Key Features
| Feature | Design Value |
|---|---|
| eBAM (enhanced Batch Acquisition Mode) | Enables synchronized sampling across ADC, DAC, and DFSDM with sub-microsecond timing precision for sensor hub applications |
| ART Accelerator™ | Eliminates flash wait states at 100 MHz, delivering consistent 125 DMIPS performance without SRAM code relocation |
| DFSDM + PDM interface | Direct digital microphone input with on-chip decimation; eliminates need for external sigma-delta filter ICs |
| Flexible static memory controller (FSMC) | Supports 8-/16-bit NOR/PSRAM with programmable timing - enables external display frame buffer or code overlay |
| Low-power timer (LPTIM1) | Asynchronous 16-bit counter running from LSE/LSI; enables precise wake-up intervals during Stop mode |
Applications
| Industrial Sensor Hub | Portable Medical Monitor |
|---|---|
Use Scenario: Aggregating data from multi-axis IMU, temperature, and gas sensors in predictive maintenance gateway. IC Role / Device Role / Timing Role: Central sensor fusion MCU performing real-time Kalman filtering, timestamped logging, and CAN bus telemetry. Use Value: eBAM synchronizes ADC and DFSDM sampling; 320 KB SRAM buffers raw sensor streams; 100 MHz CPU handles concurrent FFT and communication stacks. | Use Scenario: Battery-powered ECG and SpO₂ monitor with audio feedback and Bluetooth LE coexistence. IC Role / Device Role / Timing Role: Analog front-end controller managing ADC, dual DAC for audible alerts, and USB for clinical data export. Use Value: 2.4 MSPS ADC captures high-fidelity ECG waveforms; 15 µA Stop mode extends runtime; hardware AES secures patient data before transmission. |
| Smart Home Audio Node | HMI-Controlled Industrial Panel |
Use Scenario: Voice-enabled smart speaker node with far-field microphone array and local wake-word detection. IC Role / Device Role / Timing Role: Audio preprocessing engine handling PDM-to-PCM conversion, noise suppression, and feature extraction. Use Value: Six DFSDM channels process 12 PDM inputs simultaneously; dual DACs drive status LEDs and piezo buzzers; SAI supports external codec interfacing. | Use Scenario: Touch-enabled factory HMI with LCD display, relay control, and fieldbus connectivity. IC Role / Device Role / Timing Role: Display controller and PLC interface managing parallel LCD interface, GPIO-driven relays, and dual CAN networks. Use Value: 8080/6800 LCD interface drives 480×272 TFT directly; 3× CAN controllers isolate machine control, diagnostics, and safety buses; 1.5 MB flash stores UI assets and firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F413RHT6 | Same Cortex-M4 core, but 1 MB flash, 256 KB SRAM, no DFSDM, only 1 DAC | Lacks PDM microphone support and stereo audio preprocessing capability | Select when DFSDM and dual DAC are not required; lower cost for simpler HMI or motor control |
| STM32F469NIH6 | 2 MB flash, 320 KB SRAM, Chrom-ART accelerator, RGB LCD controller, no DFSDM | Optimized for high-resolution graphics; lacks sigma-delta filter hardware for audio sensing | Choose for GUI-rich displays with LVDS/RGB output; not suitable for PDM-based voice capture |
Compared with STM32F413RHT6 and STM32F469NIH6, the STM32F423RHT6 uniquely balances audio-centric peripherals (DFSDM, dual DAC, SAI) with robust real-time control (3× CAN, FSMC), making it optimal for edge nodes requiring simultaneous analog sensing, secure connectivity, and low-power operation - where neither alternative provides the same integrated feature set.
Availability
STM32F423RHT6 is available at Aetrix Electronics and suitable for industrial sensor hubs, portable medical monitors, smart home audio nodes, and HMI-controlled industrial panels requiring stable component supply across multi-year production cycles.
Supply support for STM32F423RHT6 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, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components.
The STM32F4 series delivers high-performance Cortex-M4 MCUs targeting real-time industrial control, audio processing, and secure connectivity - with the F423 variant specifically engineered for cost-sensitive, audio-aware edge nodes.
FAQ
What is the maximum operating temperature range for STM32F423RHT6?
The STM32F423RHT6 is rated for industrial operation from –40 °C to +105 °C ambient temperature. This rating is validated per ST's production data sheet DS11580 Rev 8, and applies to all LQFP64-packaged variants. Thermal derating begins above 105 °C, and extended temperature screening is not offered for this part number.
Does STM32F423RHT6 support external quad-SPI flash memory?
Yes - the STM32F423RHT6 integrates a Quad-SPI interface compliant with JEDEC JESD216, supporting single/dual/quad I/O modes and memory-mapped execution. It operates up to 50 MHz clock (200 Mbps in quad mode) and supports wrap-around addressing for seamless XIP operation from external flash.
Can the internal 32 kHz RC oscillator be used for RTC calibration?
Yes - the internal 32 kHz RC oscillator includes automatic calibration against the LSE (32.768 kHz crystal) or HSE/HSI dividers, achieving ±0.5% accuracy over –40 °C to +85 °C. Calibration registers are accessible via RCC_BDCR and RTC_CALR, and the calibrated output drives the RTC prescaler without external crystal dependency.
Is USB OTG FS functionality available without external PHY components?
Yes - the STM32F423RHT6 integrates a full-speed USB 2.0 transceiver with internal PHY, requiring only passive termination (1.5 kΩ pull-up on D+, 15 kΩ pull-down on D−) and standard USB connector routing. No external PHY chip or level-shifter is needed for device, host, or OTG operation.
STM32F423RHT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 100MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 50
- Program Memory Size:
- 1.5MB (1.5M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 320K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 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:
STM32F423RHT6 FAQ
1.How can I place an order for STM32F423RHT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F423RHT6 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 STM32F423RHT6 reliable?
The price and inventory of STM32F423RHT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F423RHT6 is usually 5 days.
3.What payment methods are accepted for STM32F423RHT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F423RHT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F423RHT6?
STM32F423RHT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F423RHT6 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 STM32F423RHT6?
For technical support, including STM32F423RHT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F423RHT6 requirements.
6.How does Aetrix verify that STM32F423RHT6 is sourced from the original manufacturer or authorized distributors?
All STM32F423RHT6 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 STM32F423RHT6 meets industry standards.
7.What is the process for return or replacement of STM32F423RHT6?
All STM32F423RHT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F423RHT6, 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 STM32F423RHT6 part is unused and in its original packaging.
Return procedure for STM32F423RHT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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