STM32F407ZET6

STMicroelectronics STM32F407ZET6 — ARM Cortex‑M4F MCU for performance‑driven embedded designs

The STMicroelectronics STM32F407ZET6 is a high‑performance 32‑bit microcontroller built on the ARM Cortex‑M4 core with single‑precision FPU and DSP extensions. Clocking up to 168 MHz, this member of the STM32F407 (STM32F4) series combines a robust CPU subsystem, generous embedded memory, rich connectivity (USB OTG FS/HS, Ethernet MAC, CAN, SDIO), and mixed‑signal capability (triple 12‑bit ADCs and dual 12‑bit DACs) in a compact LQFP‑144 package. Its industrial temperature range and RoHS compliance make it a dependable choice for industrial control, HMI, instrumentation, and connected products.

Engineers appreciate the STM32F407ZET6 for its balanced mix of compute throughput, integrated peripherals, and mature ecosystem. Buyers and sourcing managers value its broad market adoption and stable lifecycle within ST’s long‑lived STM32 platform. If your design needs a mainstream, feature‑rich MCU with ample headroom and scalable pin‑compatible options, the STM32F407ZET6 is a practical fit.

At‑a‑glance specifications

• Brand/Manufacturer: STMicroelectronics
• Series: STM32F407 (STM32F4)
• Core: ARM Cortex‑M4F (with FPU)
• Architecture: 32‑bit ARM Cortex‑M4 with DSP extensions
• Max clock: 168 MHz
• Flash: 512 KB
• SRAM: 192 KB (including 64 KB CCM)
• Operating voltage (VDD): 1.8 V to 3.6 V (typ. 3.3 V)
• USB: OTG FS and OTG HS (FS PHY on‑chip; HS via external ULPI PHY)
• Ethernet: 10/100 Ethernet MAC with MII/RMII interface
• ADC: 3 × 12‑bit
• DAC: 2 × 12‑bit
• Timers: Up to 17
• I2C: 3
• SPI/I2S: 3
• USART/UART: 6
• CAN: 2
• SDIO: Supported (per family description)
• Boot options: Flash, System Memory (USART/USB), or SRAM
• Temperature range: −40°C to +85°C (industrial)
• Package: LQFP‑144 (tray), surface‑mount
• Pin count: 144
• Lifecycle status: Active
• RoHS status: RoHS Compliant

Package, pin count, and mounting

• Package/case: LQFP‑144
• Mounting type: Surface Mount
• Packaging: Tray
  The 144‑pin LQFP provides a practical balance between I/O count and board real estate, with ample pins for parallel interfaces, multi‑channel ADC inputs, and rich connectivity while remaining assembly‑friendly for high‑volume SMT production.

Performance and architecture highlights

• ARM Cortex‑M4F core: Single‑precision floating‑point unit and DSP instructions accelerate math‑heavy workloads such as control loops, sensor fusion, audio filtering, and motor control.
• 168 MHz CPU: Delivers high CPU headroom for responsive UI, protocol stacks, and real‑time control on a single device.
• On‑chip SRAM: 192 KB total with a 64 KB CCM (Core‑Coupled Memory) segment for time‑critical code/data. The CCM region is ideal for deterministic access, aiding real‑time control algorithms.
  These characteristics make the STM32F407ZET6 a strong candidate where deterministic control and signal‑processing meet connectivity and mixed‑signal acquisition.

Connectivity and mixed‑signal peripherals

Communication interfaces

• 6 × USART/UART: Suitable for command consoles, sensor modules, GNSS receivers, and industrial serial links.
• 3 × I2C: For low‑pin‑count sensor/expander attachments and configuration busses.
• 3 × SPI/I2S: High‑speed serial interfacing and audio streaming use cases.
• 2 × CAN: Supports CAN‑based industrial networks and motor control environments.
• SDIO: For SD card interfacing and removable storage in data logging or firmware update flows.

USB and Ethernet

• USB OTG FS and HS: Full‑Speed PHY is integrated; High‑Speed operation requires an external ULPI PHY. This architecture lets you pick the right BOM trade‑off between cost and throughput.
• 10/100 Ethernet MAC with MII/RMII: Connects to an external PHY over MII or RMII, enabling TCP/IP connectivity for gateways, edge devices, and industrial controllers.

Analog front end

• 3 × 12‑bit ADCs: Enable multi‑channel, multi‑rate sampling for data acquisition, power monitoring, and control loops.
• 2 × 12‑bit DACs: Generate reference voltages, audio tones, or actuator drive signals without an external DAC.

Timers and control

• Up to 17 timers: A broad timer portfolio supports PWM generation, input capture, quadrature decoding, and precise event timing for motor control, lighting, and power conversion.

Memory, boot, and power management

Flash and SRAM

• 512 KB Flash allows sizable application code, stacks, and multiple operational modes.
• 192 KB SRAM, including 64 KB of CCM, supports fast data buffers and time‑critical routines.
  This mix gives embedded developers space for middleware (e.g., communications stacks) alongside control, UI, and DSP workloads.

Boot options

• Boot from Flash for normal application startup.
• Boot from System Memory for built‑in device programming via USART/USB, streamlining production flashing.
• Boot from SRAM to assist with special bring‑up or debug flows.

Operating voltage and low‑power modes

• Supply: 1.8 V to 3.6 V (typ. 3.3 V), accommodating common embedded rails and battery‑backed designs.
• Low‑power features: Sleep, Stop, Standby, plus a VBAT domain/RTC backup. These modes help lower average current in duty‑cycled applications, while the backup domain preserves timekeeping and essential context.

Application fit and design ideas

The STM32F407ZET6’s combination of performance, precision timing, mixed‑signal acquisition, and connectivity enables broad use:

• Industrial control and automation: Run real‑time control loops, fieldbus or TCP/IP networking, and HMI logic concurrently.
• Motor control and drives: Leverage timers, ADCs, and the Cortex‑M4F’s DSP for FOC, BLDC, and PMSM control strategies.
• IoT gateways and connectivity: Use Ethernet MAC and USB to bridge sensors and subsystems to local networks or hosts.
• Consumer and audio processing: Implement audio filtering and I2S streaming with hardware acceleration.
• Data acquisition and instrumentation: Triple ADCs and dual DACs support multi‑channel measurement and stimulus.
• Human–machine interface (HMI): Pair processing headroom with serial links and analog inputs for responsive interfaces.

Designers can tailor interface speed and BOM cost by selecting Full‑Speed USB only, adding an external ULPI PHY for High‑Speed USB, and pairing the Ethernet MAC with an external PHY on MII/RMII as needed.

Lifecycle, compliance, and sourcing guidance

Lifecycle status

• Status: Active (STM32F407xx family)
  Its presence within the widely deployed STM32F4 platform supports long‑term maintainability and design stability.

Environmental compliance

• RoHS: Compliant
  This helps ease environmental documentation and market access in regions requiring RoHS conformity.

Packaging and handling

• Package: LQFP‑144
• Packaging: Tray
  Adopt standard SMT assembly practices for LQFP packages and follow ESD handling procedures consistent with mixed‑signal MCUs.

Availability and planning

Lead times and inventory vary by region and distributor. The STM32F407ZET6 has broad market availability in normal conditions; however, demand cycles can tighten supply. For risk‑managed sourcing:

• Qualify pin‑compatible options early (see Alternatives section).
• Plan for external PHYs where HS USB or Ethernet is required.
• Align firmware size with 512 KB Flash; keep a migration plan for 1 MB variants if growth is expected.

Compatible alternatives and migration options

When you need footprint compatibility or a feature step:

• STM32F407ZGT6: Pin‑compatible LQFP‑144 device with 1 MB Flash instead of 512 KB. Useful for firmware growth without redesigning the PCB.
• STM32F417ZET6: Pin‑compatible device in the same family with similar features and additional crypto/hash acceleration capabilities.
  Both options help scale features or memory while preserving your hardware investment. Verify any peripheral or memory map nuances before substitution, and revalidate timing and boot settings.

Why choose the STMicroelectronics STM32F407ZET6

• Balanced performance: 168 MHz Cortex‑M4F with DSP and FPU for compute‑heavy control and signal processing.
• Rich I/O and connectivity: Multiple UART/USART, I2C, SPI/I2S, CAN, SDIO, USB OTG FS/HS (with external HS PHY), and Ethernet MAC (MII/RMII) cover common interface needs.
• Mixed‑signal capability: Triple 12‑bit ADCs and dual 12‑bit DACs simplify acquisition and actuation.
• Power‑aware operation: Sleep/Stop/Standby modes and VBAT domain/RTC backup support low‑energy designs.
• Ecosystem continuity: Part of the STM32F4 family, easing reuse across product lines and enabling long‑term availability planning.

Practical design notes

• External PHYs: Budget board space and ULPI/MII/RMII routing if you plan to enable USB HS or Ethernet. The MCU integrates the USB FS PHY; HS and Ethernet require external PHYs.
• Memory budgeting: With 512 KB Flash and 192 KB SRAM (including 64 KB CCM), profile your middleware stacks and RTOS to ensure headroom. Consider the pin‑compatible 1 MB variant if growth is likely.
• Analog reference and layout: For optimal ADC/DAC performance, provide clean references and segregate analog grounds as recommended in the datasheet and hardware guidelines (consult the official ST documentation).
• Boot configuration: Use boot pins/straps to select Flash, System Memory (for built‑in programming over USART/USB), or SRAM boot modes during manufacturing and field service.

Frequently asked questions (FAQs)

Q: What CPU core does the STM32F407ZET6 use?
A: An ARM Cortex‑M4F core with single‑precision floating‑point unit and DSP extensions.

Q: What are the memory sizes?
A: 512 KB Flash and 192 KB SRAM total, including a 64 KB CCM (Core‑Coupled Memory) segment.

Q: Does the STM32F407ZET6 include a hardware USB HS PHY?
A: It integrates a Full‑Speed USB PHY. High‑Speed operation requires an external ULPI PHY.

Q: Is the Ethernet PHY integrated?
A: No. The device provides a 10/100 Ethernet MAC with MII/RMII interface; use an external Ethernet PHY.

Q: What is the operating voltage range?
A: 1.8 V to 3.6 V (typical 3.3 V).

Q: What is the difference between ‘ZE’ and ‘ZG’ in STM32F407ZEx/ZGx part numbers?
A: They are pin‑compatible 144‑pin LQFP variants; ‘ZE’ has 512 KB Flash, while ‘ZG’ has 1 MB Flash. The trailing digit (e.g., ‘6’) indicates temperature grade (−40°C to +85°C).

Q: What temperature range does the STM32F407ZET6 support?
A: −40°C to +85°C (industrial).

Q: What boot options are available?
A: Boot from Flash, System Memory (USART/USB), or SRAM.

Resources

• Product page: https://www.st.com/en/microcontrollers-microprocessors/stm32f407-417.html
• Datasheet: https://www.st.com/resource/en/datasheet/dm00037051.pdf

Notes

• Specifications and features listed here reflect the provided part data for STMicroelectronics STM32F407ZET6. Always consult the latest ST datasheet and reference manual for definitive design decisions.