STMicroelectronics STM32MP151FAC1

Overview

STM32MP151FAC1 from STMicroelectronics is a dual-core Arm® Cortex®-A7 (800 MHz) + Cortex®-M4 (209 MHz) microprocessor unit with TrustZone® security, 708 KB on-chip SRAM, LPDDR3/DDR3 memory controller, and integrated LCD-TFT controller supporting WXGA@60 fps - deployed in industrial HMIs, smart gateways, and edge AI vision terminals.

For engineers reviewing the STM32MP151FAC1 datasheet, STM32MP151FAC1 pinout, STM32MP151FAC1 application, or STM32MP151FAC1 equivalent, key selection considerations include dual-core asymmetric processing capability, hardware crypto acceleration (AES-256/HASH), DDR retention in Standby mode (2 µA), and 176 I/Os with secure/tamper support for certified embedded systems.

Technical Context

The device implements a heterogeneous dual-core architecture: Cortex-A7 cores run Linux-based applications with NEON™ and TrustZone® isolation, while the Cortex-M4 handles real-time control tasks with FPU and MPU. Memory subsystem includes 256 KB AXI SYSRAM, 384 KB AHB SRAM, and 64 KB backup SRAM with dedicated LDO regulation.

Interconnect uses dual bus matrices - 64-bit AXI at up to 266 MHz and 32-bit AHB at 209 MHz - enabling concurrent high-bandwidth peripheral access. Security relies on BSEC OTP fuses, active tamper detection, and TrustZone address space controllers (TZC) for DDR memory protection.

Key Specifications

Pinout & Package

STM32MP151FAC1 is housed in a TFBGA361 package (12 × 12 mm, 0.5 mm pitch), compliant with ECOPACK2 environmental standards. Pin definitions are validated per STMicroelectronics DS12501 Rev 9, Section 4 (Pinouts, pin description and alternate functions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core MPU applications.

Compared with i.MX 8M Mini and RZ/G2L, STM32MP151FAC1 uniquely combines Linux-capable Cortex-A7, real-time Cortex-M4, integrated TFT controller, and hardware-enforced secure boot - reducing component count and certification effort for industrial edge devices requiring display and security convergence.

Availability

STM32MP151FAC1 is available at Aetrix Electronics and suitable for industrial HMIs, smart gateways, and AI vision terminals requiring stable component supply across extended product lifecycles.

Supply support for STM32MP151FAC1 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, specializing in microcontrollers, power management, sensors, and automotive-grade ICs.

STM32MP151 belongs to the STM32MP1 series of microprocessor units designed for resource-constrained edge applications requiring Linux runtime, real-time responsiveness, and hardware security - targeting industrial automation, building control, and human-machine interfaces.

FAQ

What boot sources does STM32MP151FAC1 support?

STM32MP151FAC1 supports boot from internal Flash (via embedded ROM loader), eMMC, SD card, NAND Flash, Quad-SPI NOR, and USB DFU. Boot mode is selected via BOOT0 and BOOT1 pins at power-up, with configurable fallback sequences defined in the BSEC OTP registers.

Does STM32MP151FAC1 require an external PMIC?

No - STM32MP151FAC1 integrates multiple on-chip LDOs (1.1 V core, 1.8 V USB, 1.8 V RETRAM, 0.9 V backup) and supports direct connection to single 3.3 V or 5 V input. An external PMIC is optional for advanced power sequencing or efficiency optimization in high-volume designs.

How is TrustZone implemented across the dual-core architecture?

TrustZone is implemented separately on each core: Cortex-A7 uses TrustZone memory protection unit (MPU) and TZC-400 for DDR memory partitioning; Cortex-M4 uses its own MPU with secure/non-secure state isolation. Inter-core communication occurs via IPCC with hardware semaphore synchronization to prevent privilege escalation.

What is the maximum resolution and refresh rate supported by the LTDC controller?

The LCD-TFT controller (LTDC) supports up to WXGA (1366 × 768) at 60 fps or Full HD (1920 × 1080) at 30 fps, with pixel clock up to 90 MHz. It includes two independent layers, alpha blending, and programmable color LUTs - enabling smooth UI transitions and overlay graphics without GPU assistance.