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STMicroelectronics STM32F423MHY3TR — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F423MHY3TR STM32F4 MCU, 100MHz, 1.5MB Flash, 81-WLCSP

MPNSTM32F423MHY3TR
Active

STMicroelectronics STM32F423MHY3TR, STM32F4 series, ARM Cortex-M4 32-Bit Single-Core MCU, 100MHz, 1.5MB Flash, 320K x 8 RAM, 81-UFBGA/WLCSP, -40°C to 125°C, 1.7V to 3.6V.

$11.0327Ref. price · indicative, final on quote
STMicroelectronics STM32F423MHY3TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F423MHY3TR specifications
ParameterValue
SeriesSTM32F4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.7V ~ 3.6V
Operating temperature-40°C~125°C(TA)
Speed100MHz
PackageTape & Reel (TR)
RAM size320K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB OTG
Number of i (O)60
Core processorARM® Cortex®-M4
Case81-UFBGA, WLCSP
Data convertersA/D 16x12b; D/A 2x12b
Program memory size1.5MB (1.5M x 8)

Product details

The STM32F423MHY3TR is an STM32F4-series ARM Cortex-M4 MCU from STMicroelectronics, clocked at 100 MHz with a single-precision FPU.

This MCU integrates a rich peripheral set: brown-out detect, POR, DMA, I²S, LCD parallel interface, PWM, and a watchdog timer. On the connectivity side it includes CANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, and USB OTG.

The 81-WLCSP (4.04 x 3.95 mm) is the smallest footprint in the STM32F423 family — about 16 mm². That saves board area but demands fine-pitch assembly capability and a good solder-paste stencil. The part is surface-mount only, shipped in Tape & Reel. MSL level is not stated in this record, but WLCSP packages typically run MSL 1 or 3; verify with the pouch floor-life label before reflow.

STMicroelectronics lists the STM32F423MHY3TR as Active.

Frequently asked questions

What is the maximum clock speed of STM32F423MHY3TR?

The core runs at 100 MHz from the internal oscillator or an external clock source.

Can STM32F423MHY3TR replace STM32F423MHY6TR?

Both are variants of the same base part STM32F423. The MHY3 and MHY6 suffixes typically differ by package or temperature grade — confirm the exact differences in the datasheet before substituting. The storefront can quote both against your BOM line.