STMicroelectronics STM32F437VIT6WTR

Overview

STM32F437VIT6WTR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 180 MHz (225 DMIPS), featuring 2 MB flash, 256+4 KB SRAM (including 64 KB CCM), hardware crypto acceleration (AES-128/192/256, SHA-1/2, HMAC), and integrated 10/100 Ethernet MAC with IEEE 1588v2 support. It targets high-performance industrial HMI, networked gateways, and embedded vision systems requiring real-time processing, secure connectivity, and TFT-LCD display control.

For engineers reviewing the STM32F437VIT6WTR datasheet, STM32F437VIT6WTR pinout, STM32F437VIT6WTR application, or STM32F437VIT6WTR equivalent, key selection criteria include dual USB OTG (FS/HS), parallel camera interface (54 MB/s), LCD-TFT controller (up to 4096×2048), and cryptographic accelerator - all in a WLCSP143 package with 143 I/Os and 5 V-tolerant capability.

Technical Context

The STM32F437VIT6WTR implements an Arm Cortex-M4 core with FPU and Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 180 MHz. Its memory subsystem includes dual-bank flash (read-while-write), 256 KB main SRAM + 4 KB backup SRAM + 64 KB CCM RAM, and a flexible external memory controller supporting SDRAM, NOR, NAND, and PSRAM.

Peripherals are organized across multiple AHB/APB buses with dedicated DMA channels: dual CAN 2.0B controllers, two USB OTG PHYs (one full-speed on-chip, one high-speed with ULPI), 10/100 Ethernet MAC with IEEE 1588 hardware timestamping, and a Chrom-ART Accelerator™ (DMA2D) for efficient 2D graphics composition - all synchronized via multi-source clock tree with PLL, audio PLL, and SAI/LCD PLLs.

Key Specifications

Pinout & Package

Package: WLCSP143 (3.5 × 3.5 mm, 0.4 mm pitch, 143-ball array). Ball pitch and layout conform to JEDEC MO-220, optimized for space-constrained industrial and portable applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance MCU applications.

Compared with STM32F439VIT6, the F437VIT6WTR omits redundant RGB display logic while retaining full 8080/6800 TFT and DCMI support - delivering optimal feature alignment for industrial HMI. Against STM32H743VIT6, it trades raw M7 performance for integrated imaging/display peripherals and lower power consumption in active vision tasks.

Availability

STM32F437VIT6WTR is available at Aetrix Electronics and suitable for industrial HMI, embedded vision systems, and secure network appliances requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability (AEC-Q100 not applicable, but qualified per industrial temp range –40°C to +105°C).

Supply support for STM32F437VIT6WTR 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, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32F437xx series belongs to ST's high-performance Cortex-M4 portfolio, engineered specifically for applications demanding rich multimedia interfaces, real-time connectivity, and hardware-accelerated security - bridging the gap between general-purpose MCUs and application processors.

FAQ

What is the maximum operating temperature rating for STM32F437VIT6WTR?

The STM32F437VIT6WTR is rated for industrial temperature range: –40°C to +105°C ambient. This is confirmed in Section 6.3.1 of DS9484 Rev 14, where "Operating conditions" specify T_A = –40 to 105 °C for all WLCSP143 variants. Thermal derating begins above 85°C ambient depending on PCB copper area and airflow.

Does STM32F437VIT6WTR support external SDRAM, and what is the maximum bus width?

Yes, the Flexible Memory Controller (FMC) supports external SDRAM with up to 32-bit data bus width and 13-bit address lines (A0–A12), enabling configurations up to 256 MB. Supported densities include 16/32/64/128 Mbit × 16-bit SDRAM chips, as detailed in Section 3.9 and Table 11 of DS9484 Rev 14.

Can the STM32F437VIT6WTR simultaneously run USB OTG Full-Speed and High-Speed interfaces?

No - the device has one USB OTG FS controller (with on-chip PHY) and one USB OTG HS controller (requiring external ULPI PHY), but they share the same USB clock domain and cannot operate concurrently in host/device mode. However, FS can be used for device enumeration while HS handles bulk transfers, managed via software arbitration per Section 3.33–3.34.

Is the WLCSP143 package of STM32F437VIT6WTR compatible with standard reflow profiles?

Yes - the WLCSP143 package is qualified for standard Pb-free reflow per J-STD-020D. Peak temperature must not exceed 260°C for ≤30 seconds, with ramp-up rate ≤3°C/s and cooling rate ≤6°C/s. Moisture sensitivity level is MSL3, requiring bake-out if exposed >168 hours at >30°C/60% RH before reflow.