STMicroelectronics STM32F412ZEJ6

Overview

STM32F412ZEJ6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 100 MHz max clock, 1 MB Flash, 256 KB SRAM, and integrated USB OTG FS, dual CAN 2.0B, and 17 communication interfaces. It features ART Accelerator™ for zero-wait-state flash execution, Batch Acquisition Mode (BAM) for sensor hub efficiency, and operates from 1.7–3.6 V in industrial temperature range (–40 to +85 °C).

For engineers reviewing the STM32F412ZEJ6 datasheet, STM32F412ZEJ6 pinout, STM32F412ZEJ6 application, or STM32F412ZEJ6 equivalent, key selection criteria include its 100 MHz Cortex-M4+FPU performance, 1 MB Flash/256 KB SRAM memory partitioning, dual CAN support, low-power Stop mode (18 µA), and LQFP144 package compatibility with legacy STM32F4 designs.

Technical Context

The device implements an Arm Cortex-M4 core with hardware FPU and DSP instructions, coupled with ST's ART Accelerator™ that eliminates flash wait states at 100 MHz. Its memory subsystem includes flexible static memory controller (FSMC) supporting NOR/PSRAM and dual-mode Quad-SPI for external serial flash.

Peripherals are organized around a multi-AHB bus matrix: two independent CAN 2.0B controllers, USB OTG FS with integrated PHY, four I²C (SMBus/PMBus), five SPI/I²S (two full-duplex I²S), SDIO, and a 12-bit 2.4 MSPS ADC with up to 16 channels - all accessible via up to 114 GPIOs with interrupt capability and 5 V tolerance on 114 pins.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with 114 user I/Os, 5 V-tolerant inputs, and dedicated power/ground pins for noise-sensitive analog and digital domains.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F407VGT6, STM32F412ZEJ6 adds BAM, dual CAN, and PDM for sensor hubs but trades off legacy USB host support; versus STM32F429ZIT6, it sacrifices LCD-TFT capability for lower active power and optimized peripheral set for connected objects.

Availability

STM32F412ZEJ6 is available at Aetrix Electronics and suitable for motor control systems, industrial PLCs, wearable sensor hubs, and smart home gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F412ZEJ6 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 products for industrial, automotive, and consumer markets.

The STM32F412xE series targets resource-constrained, power-aware edge devices - emphasizing low-power sensor aggregation, dual-CAN fieldbus bridging, and USB OTG connectivity without compromising real-time compute performance.

FAQ

What is the maximum operating temperature range for STM32F412ZEJ6?

The STM32F412ZEJ6 is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 of DS11139 Rev 9, where all electrical characteristics (including Flash endurance, ADC accuracy, and oscillator stability) are guaranteed across this range under specified VDD conditions.

Does STM32F412ZEJ6 support external SDRAM via FSMC?

No. The Flexible Static Memory Controller (FSMC) in STM32F412ZEJ6 supports only SRAM, PSRAM, and NOR flash memory - not SDRAM. SDRAM support requires the more advanced FMC peripheral found in STM32F42xxx/F43xxx lines. This limitation is explicitly stated in Section 3.11 of the datasheet.

Can the USB OTG FS interface operate in host mode without an external PHY?

Yes. STM32F412ZEJ6 integrates a full-speed USB 2.0 OTG transceiver with internal PHY, enabling device, host, and OTG operation without external components. Section 3.32 confirms the presence of "USB_OTG_FS controller with PHY", and Table 2 lists "USB OTG FS" as a standard feature across the F412xE family.

Is the 96-bit unique ID accessible via standard debug interface?

Yes. The 96-bit unique device identifier is mapped to system memory at address 0x1FFF7A10 and readable via SWD/JTAG debug access or firmware using HAL_GetUID() API. This is documented in Section 3.39 and Table 12 (register boundary addresses) of DS11139 Rev 9, and verified in ST's RM0383 reference manual.