Item specifics
Description
STM32H723VET6 Product Overview
STM32H723VET6 is a Cortex-M7 MCU at 550 MHz with double-precision FPU, LQFP-100. 512 KB dual-bank Flash, 564 KB SRAM, USB OTG HS/FS (on-chip HS PHY), Ethernet MAC, CAN FD, dual Quad SPI, FMC (SDRAM), three 16-bit ADCs (5 Msps), two 12-bit DACs, two comparators, two op-amps, advanced motor control timers, GP/LP timers, RTC, 8×USART/UART, 5×SPI/I2S, 4×I2C, SDIO, SAI, SPDIF-Rx. 80 x 5 V-tolerant I/Os. 1.71–3.6 V, -40–85 °C. Compared to larger packages like H723ZG, this 100-pin device delivers 80 I/Os in a compact form factor without compromising performance, making it ideal for space-constrained high-performance real-time control and industrial networking.
STM32H723VET6 Core Features
Core: Cortex-M7 550 MHz, DPFPU + L1 cache (16 KB I-cache + 16 KB D-cache)
Memory: 512 KB Dual-Bank Flash, 564 KB SRAM (incl. 128 KB DTCM)
Connectivity: Ethernet MAC, USB OTG HS/FS (on-chip HS PHY), CAN FD, SDIO, SAI, SPDIF-Rx, 8×USART/UART, 5×SPI/I2S, 4×I2C
Analog: 3×16-bit ADCs (5 Msps), 2×12-bit DACs, 2×Comparators, 2×Op-Amps
Motor Control: 2×Advanced Timers (PWM/Deadtime/Brake), multiple GP/LP timers
Memory Expansion: FMC (SDRAM/PSRAM/NOR/NAND), Dual Quad SPI
I/Os: 80 (5 V-tolerant)
Package: LQFP-100
Temperature Range: -40°C to 85°C
STM32H723VET6 Applications
Industrial Control: Real-time controllers, PLCs, servo drives, industrial Ethernet gateways
High-Speed Communication: Ethernet/CAN FD/USB HS interface conversion and bridging
Audio & Consumer: Digital audio equipment, advanced consumer electronics
Motor Control: High-precision FOC, multi-axis servo control
Portable Medical & Instrumentation: High-performance handheld devices, precision data acquisition
STM32H723VET6 Key Advantages
550 MHz Cortex-M7 + DPFPU: Ultimate real-time processing and floating-point performance
On-Chip USB HS PHY: Eliminates external HS PHY, simplifying design and BOM
Ethernet + CAN FD + Rich Connectivity: Single-chip for industrial networking and real-time communication
Dual-Bank Flash + 564 KB SRAM: Safe firmware updates and complex data processing
Dual Quad SPI + FMC: Flexible external memory expansion
80 I/Os in Compact 100-Pin Package: High-density interfaces, space-saving
1.71–3.6 V Wide Supply: Adaptable to various power scenarios
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FAQ
1. How does the STM32H723VET6 differ from the STM32H723VGT6, and how should I choose based on Flash size?
Both share the same Cortex‑M7 core (550 MHz), SRAM (564 KB), peripherals, LQFP‑100 package, and hardware crypto accelerator. The only difference is on‑chip Flash capacity: VET6 has 512 KB, while VGT6 has 1 MB. If your firmware, graphics assets, and critical data fit within 512 KB, the VET6 delivers identical performance and security features at a lower cost. If you need more program space or plan for future expansion, the VGT6 provides twice the storage headroom. Both support external Flash via dual QSPI, so even with the VET6 you can offload large graphics and file systems to external memory.
2. With only 512 KB of on‑chip Flash, can it run large applications? How do I expand storage?
512 KB of Flash is sufficient for most real‑time operating systems (e.g., FreeRTOS), a full TCP/IP stack, file systems, and complex control algorithms. For applications requiring large graphical interfaces or file storage, you can use the dual Quad SPI interfaces to connect low‑cost external NOR Flash or HyperRAM, which support memory‑mapped mode for direct code execution or asset loading. Additionally, the H723’s 564 KB SRAM provides ample runtime memory, so the 512 KB on‑chip Flash rarely becomes a performance bottleneck.
3. What are the advantages of the LQFP‑100 package? Is it easy to solder?
The LQFP‑100 has all pins exposed with a 0.5 mm pitch and can be drag‑soldered with a standard iron and flux—no hot‑air station required. It strikes an excellent balance between mass production and hand prototyping, making it ideal for hobbyists, students, and small teams. The 14 mm × 14 mm size offers great compactness while remaining highly manageable, and it provides 82 usable I/Os to meet the needs of most industrial control and IoT applications.
4. What advantages does the 550 MHz Cortex‑M7 on the STM32H723VET6 offer over the 480 MHz STM32H743?
The 550 MHz Cortex‑M7 delivers approximately 1178 DMIPS and 2778 CoreMark—a roughly 15% performance uplift over the 480 MHz H743. With the same double‑precision FPU, DSP extensions, 512 KB dual‑bank Flash, 564 KB SRAM, and a complete hardware crypto accelerator in an LQFP‑100 package, it is particularly well‑suited for industrial control, motor drives, and communication gateways that demand rigorous real‑time computation, data security, and cost efficiency.
5. How is the 564 KB SRAM organized, and how does it benefit hard real‑time tasks?
The SRAM is carefully partitioned into 128 KB DTCM (Data Tightly Coupled Memory), 64 KB ITCM (Instruction Tightly Coupled Memory), 256 KB AXI SRAM, and 128 KB low‑power SRAM (retainable in Stop mode). DTCM and ITCM provide zero‑wait‑state CPU access for the lowest and most deterministic interrupt and control‑loop latency. The multi‑bank architecture allows DMA and the CPU to access different regions simultaneously without blocking, significantly boosting throughput when concurrently handling Ethernet, LCD refresh, and high‑speed ADC acquisition.
6. Does the 512 KB Flash support dual‑bank and OTA updates? How can update safety be ensured?
Yes. Despite the 512 KB capacity, it still supports a dual‑bank architecture, allowing code execution from one bank while the other is being erased and programmed. Once a new firmware image is downloaded to the alternate bank and verified, a simple boot‑address switch completes the update. If a power loss or verification failure occurs, the system automatically rolls back to the original firmware, guaranteeing the device is never bricked. Combined with the on‑chip AES‑256 and SHA accelerators, fully secure firmware updates can be implemented—ideal for industrial IoT gateways and critical infrastructure requiring highly reliable remote maintenance.
7. Can the Chrom‑ART accelerator and LCD controller be fully utilized in the LQFP‑100 package? Are there enough pins?
The Chrom‑ART (DMA2D) accelerator does not consume extra I/Os, so its functionality is package‑independent. However, the on‑chip TFT‑LCD controller (LTDC) requires many pins for a 24‑bit RGB interface; using a full 24‑bit interface would consume nearly half of the 82 available I/Os. You can still drive a 16‑bit display or use an SPI‑based smart screen to free up GPIOs. It is recommended to use STM32CubeMX for pin planning to strike a balance between graphics and other peripherals.
8. What hardware security features does the chip integrate? Is secure boot supported?
It includes a hardware true‑random‑number generator (TRNG), an AES‑256 encryption accelerator, and SHA‑1/SHA‑2 and HMAC hashing accelerators for efficient encryption and authentication. Together with the dual‑bank Flash and code readout protection (RDP), it can establish a complete chain of trust from secure boot to encrypted firmware updates, effectively preventing unauthorized firmware access or tampering. This is especially important in payment terminals, IoT security gateways, and industrial controllers where IP protection is essential.
9. How should power and thermal management be handled at 550 MHz full load? Is the LQFP‑100 package reliable?
Typical power consumption at full load is around 1–1.5 W. The LQFP‑100 package has no exposed thermal pad, but effective heat dissipation can be achieved through a large ground copper pour under the chip, a multi‑layer PCB, and sufficient thermal vias—no external heatsink is required. The chip supports dynamic frequency scaling and multiple low‑power modes (Sleep, Stop, Standby) to significantly reduce power during idle periods. It is usually rated for the industrial temperature range (-40 °C to 85 °C), and with good thermal design, reliable long‑term operation can be ensured.
10. Is the software toolchain for the STM32H723VET6 mature? Can I reuse code from previous STM32F4/F7 projects?
Very mature. It is fully compatible with the STM32Cube ecosystem, including the free STM32CubeMX graphical configuration tool, STM32CubeIDE integrated development environment, and the feature‑rich STM32CubeH7 firmware package. When migrating from STM32F4 or F7, a large portion of HAL code can be reused, with the main adjustments being peripheral configuration and memory mapping. ST also provides extensive example projects and middleware covering Ethernet, USB, graphics, and file systems to jump‑start development.