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STMicroelectronics STM32F423MHY3TR
- Part No.:
- STM32F423MHY3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 81-UFBGA, WLCSP
- Datasheet:
-
STM32F423MHY3TR.pdf
- Description:
- IC MCU 32BIT 1.5MB FLASH 81WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,332
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Product details
Overview
STM32F423MHY3TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, 1.5 MB flash, 320 KB SRAM, USB OTG FS, dual 12-bit DACs, and hardware AES encryption. It operates up to 100 MHz, delivers 125 DMIPS, and supports -40 °C to 105 °C ambient temperature - deployed in industrial HMI systems requiring real-time audio processing and secure firmware updates.
For engineers reviewing the STM32F423MHY3TR datasheet, STM32F423MHY3TR pinout, STM32F423MHY3TR application, or STM32F423MHY3TR equivalent, key selection criteria include its integrated DFSDM for PDM microphone arrays, eBAM for low-power sensor acquisition, dual DAC support for analog waveform generation, and WLCSP81 package suitability for space-constrained portable devices.
Technical Context
The STM32F423MHY3TR implements a tightly coupled Cortex-M4 core with FPU and ART Accelerator™ enabling zero-wait-state execution from flash at 100 MHz. Its memory subsystem includes 1.5 MB of embedded flash, 320 KB SRAM, and dual-mode Quad-SPI for external code/data expansion.
Peripherals are architected for mixed-signal edge applications: two 12-bit DACs support simultaneous analog output generation; one 12-bit, 2.4 MSPS ADC handles up to 16 channels; six DFSDM channels process sigma-delta modulator streams with stereo microphone and sound source localization capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 100 MHz max frequency, 125 DMIPS performance - enables real-time DSP tasks without external coprocessor |
| Flash / RAM | 1.5 MB flash + 320 KB SRAM - sufficient for complex GUI stacks, audio codecs, and encrypted OTA update buffers |
| ADC | 1×12-bit, 2.4 MSPS, 16-channel - supports high-speed sensor sampling in motor control or power monitoring |
| DACs | 2×12-bit, buffered - allows simultaneous analog signal generation (e.g., audio tone + reference voltage) |
| DFSDM | 6 digital filters for sigma-delta modulators - enables direct connection to PDM microphones without external decimation logic |
| USB | USB 2.0 Full-Speed OTG controller with PHY - supports device/host/OTG roles for firmware updates and peripheral bridging |
| AES | 128/256-bit hardware accelerator - offloads encryption/decryption for secure boot and TLS stack execution |
Pinout & Package
STM32F423MHY3TR uses the WLCSP81 (4.039 × 3.951 mm) package, optimized for ultra-compact portable designs. It features 81 solder bumps with 0.4 mm pitch, supporting 114 I/Os (109 fast, 114 5 V-tolerant), and integrates VCAP_1/VCAP_2 stabilization capacitors externally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Core and I/O domain inputs; require local 100 nF + 4.7 µF decoupling per VDD pair |
| VCAP_1, VCAP_2 | Internal regulator bypass | Must connect 2.2 µF ceramic capacitors to ground - critical for stable 1.2 V core voltage regulation |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Configurable as GPIO, alternate function (e.g., USART2_TX on PA2), or event input - all support interrupt generation |
| PA4–PA7 | DAC outputs | PA4 = DAC1_OUT1, PA5 = DAC1_OUT2, PA6/PA7 = DAC2_OUT1/DAC2_OUT2 - each with internal buffer and configurable trigger sources |
| PC0–PC5 | ADC1_IN0–IN5 | Analog input channels mapped to dedicated pins - support differential mode and hardware oversampling |
| PD0–PD1 | OSC_IN / OSC_OUT | Connects to 4–26 MHz crystal - required for precise clocking of USB, RTC, and audio PLLs |
Key Features
| Feature | Design Value |
|---|---|
| eBAM (enhanced Batch Acquisition Mode) | Reduces active current during periodic sensor reads by >30% vs. standard polling - extends battery life in wearable health monitors |
| ART Accelerator™ | Enables 0-wait-state execution from flash at 100 MHz - eliminates external SRAM need for deterministic real-time response |
| Dual 12-bit DACs with buffer | Supports simultaneous analog output generation with <1 µs settling time - suitable for audio tone synthesis and calibration signal generation |
| 6-channel DFSDM with PDM interface | Processes up to 6 PDM microphone streams with hardware decimation and filtering - eliminates FPGA or DSP for voice wake-up systems |
| Hardware AES-128/256 engine | Performs encryption/decryption at >10 MB/s with DMA chaining - secures firmware images and communication payloads without CPU load |
Applications
| Industrial HMI Panel | Portable Audio Recorder |
|---|---|
Use Scenario: Touch-enabled display with real-time sensor visualization and local data logging. IC Role / Device Role / Timing Role: Main application processor managing LCD parallel interface (8080 mode), ADC sampling of environmental sensors, and USB OTG FS for data export. Use Value: Integrated 1.5 MB flash stores GUI assets and firmware; dual DACs generate audible feedback tones; DFSDM processes onboard PDM mics for voice command capture. | Use Scenario: Battery-powered field recorder capturing stereo audio with noise suppression and metadata tagging. IC Role / Device Role / Timing Role: Audio subsystem controller handling PDM mic input via DFSDM, I2S output to codec, and AES-encrypted SDIO storage to eMMC. Use Value: Hardware DFSDM decimates 6 PDM streams at 1.6 MHz; AES engine encrypts recordings before SDIO write; low-power Stop mode draws only 15 µA during standby. |
| Smart Energy Meter | Medical Sensor Hub |
Use Scenario: DIN-rail mounted meter performing harmonic analysis, tamper detection, and secure remote reporting. IC Role / Device Role / Timing Role: Real-time computation unit executing FFT on ADC samples, managing CAN 2.0B communication to concentrators, and running TLS stack via hardware crypto. Use Value: 125 DMIPS core executes IEEE 519-compliant harmonic analysis; 3x CAN interfaces enable multi-bus grid monitoring; AES accelerates TLS handshake and payload encryption. | Use Scenario: Wearable patch aggregating ECG, SpO₂, and motion data for remote patient monitoring. IC Role / Device Role / Timing Role: Low-power sensor fusion hub acquiring analog biosignals via ADC/DAC, processing PDM microphone for cough detection, and transmitting over BLE via UART. Use Value: eBAM reduces average current during periodic ECG sampling; VBAT-supplied RTC maintains accurate timestamps across sleep cycles; 114 I/Os support multiple sensor interfaces and debug access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F413MHY3TR | Same WLCSP81 package, 1 MB flash, 256 KB RAM, no DFSDM, single DAC | Lacks PDM microphone support and stereo sound localization; lower memory for OTA updates | Select when DFSDM and dual DAC are unnecessary and cost reduction is prioritized |
| STM32L4R5ZIJ6TR | ARM Cortex-M4, 2 MB flash, 640 KB SRAM, no USB OTG FS, no DFSDM, 2x DAC | Ultra-low-power focus (110 µA/MHz), no full-speed USB PHY, no hardware AES | Prefer for battery-only operation >1 year; avoid if USB device/host or AES acceleration is required |
Compared with STM32F423MHY3TR, STM32F413MHY3TR trades DFSDM and flash capacity for lower unit cost, while STM32L4R5ZIJ6TR sacrifices USB OTG and AES for sub-100 µA/MHz efficiency - making the MHY3TR optimal for compact, USB-connected, audio-capable edge nodes needing cryptographic agility.
Availability
STM32F423MHY3TR is available at Aetrix Electronics and suitable for industrial HMI panels, portable audio recorders, smart energy meters, and medical sensor hubs requiring stable component supply across extended product lifecycles.
Supply support for STM32F423MHY3TR 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, specializing in microcontrollers, power management, and sensing technologies for industrial, automotive, and consumer markets.
The STM32F4 series targets high-performance embedded applications demanding real-time processing, rich analog integration, and connectivity - with the F423 variant optimized for audio, security, and ultra-compact form factors.
FAQ
What is the maximum operating temperature range for STM32F423MHY3TR?
The STM32F423MHY3TR is rated for operation from -40 °C to +105 °C ambient temperature. This extended industrial grade rating is validated per ST's production test flow and applies to all WLCSP81 variants. Thermal derating begins above 105 °C, and junction temperature must remain below 125 °C under sustained load with proper PCB thermal design.
Does STM32F423MHY3TR support USB device, host, and OTG modes simultaneously?
No - the USB 2.0 Full-Speed controller supports device, host, or OTG operation, but only one mode can be active at a time. OTG mode requires external VBUS sensing and ID pin configuration to dynamically switch between device/host roles. The embedded PHY eliminates need for external transceivers, reducing BOM count in portable designs.
How many PDM microphones can be interfaced using DFSDM?
The STM32F423MHY3TR supports up to six PDM microphones via its six independent DFSDM channels. Each channel accepts 1-bit PDM data at up to 3.2 MHz, performs hardware decimation (up to 32×), and applies configurable digital filters. Stereo microphone pairs can be processed with synchronized sampling for sound source localization.
Is the WLCSP81 package RoHS and REACH compliant?
Yes - the STM32F423MHY3TR in WLCSP81 packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. It carries ST's ECOPACK®2 designation, confirming lead-free terminations, halogen-free molding compound, and compliance with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for surface-mount assembly.
STM32F423MHY3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 81-UFBGA, WLCSP
- Series:
- STM32F4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 100MHz
- Connectivity:
- CANbus, EBI/EMI, 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:
- 60
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F423MHY3TR FAQ
1.How can I place an order for STM32F423MHY3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F423MHY3TR 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 STM32F423MHY3TR reliable?
The price and inventory of STM32F423MHY3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F423MHY3TR is usually 5 days.
3.What payment methods are accepted for STM32F423MHY3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F423MHY3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F423MHY3TR?
STM32F423MHY3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F423MHY3TR 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 STM32F423MHY3TR?
For technical support, including STM32F423MHY3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F423MHY3TR requirements.
6.How does Aetrix verify that STM32F423MHY3TR is sourced from the original manufacturer or authorized distributors?
All STM32F423MHY3TR 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 STM32F423MHY3TR meets industry standards.
7.What is the process for return or replacement of STM32F423MHY3TR?
All STM32F423MHY3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F423MHY3TR, 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 STM32F423MHY3TR part is unused and in its original packaging.
Return procedure for STM32F423MHY3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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