STMicroelectronics STM32MP131FAE7

Overview

STM32MP131FAE7 from STMicroelectronics is a dual-core Arm® Cortex®-A7 microprocessor operating up to 1 GHz, featuring 1× Gigabit Ethernet MAC (IEEE 1588v2), 1× 12-bit ADC (5 Msps), hardware-accelerated AES-128/256 with DPA protection, and TrustZone®-enabled secure boot. It integrates 168 KB on-chip SRAM (128 KB AXI SYSRAM + 32 KB AHB SRAM + 8 KB Backup SRAM), supports LPDDR2/LPDDR3-1066 and DDR3/DDR3L-1066 external memory, and targets industrial HMI, edge gateway, and secure IoT endpoint applications.

For engineers reviewing the STM32MP131FAE7 datasheet, STM32MP131FAE7 pinout, STM32MP131FAE7 application, or STM32MP131FAE7 equivalent, key selection considerations include its 289-ball LFBGA (14 × 14 mm, 0.8 mm pitch) package, dual-bus matrix architecture (64-bit AXI @ 266 MHz / 32-bit AHB @ 209 MHz), 135 secure GPIOs with tamper detection, and integrated cryptographic peripherals (PKA, HASH, RNG, DFSDM).

Technical Context

The STM32MP131FAE7 implements a heterogeneous dual-core Arm Cortex-A7 subsystem with unified 128 KB L2 cache, NEON™ SIMD support, and TrustZone® for hardware-enforced isolation between secure and non-secure worlds. Its memory subsystem includes dedicated DDR controller (DDRCTRL) with ECC support and TrustZone Address Space Controller (TZC) for fine-grained memory access control.

It features four independent PLLs (PLL1–PLL4) with fractional dividers for precise clock generation across domains: CPU, AXI/AHB buses, audio (SAI/SPDIF), and USB. The interconnect uses two bus matrices - high-bandwidth 64-bit AXI and deterministic 32-bit AHB - enabling concurrent high-throughput data movement and real-time peripheral servicing via 56 DMA channels.

Key Specifications

Pinout & Package

LFBGA289 (14 × 14 mm, 0.8 mm pitch, B0ED) package with exposed thermal pad; 289 I/O balls arranged in 17 × 17 grid, including dedicated power/ground rings, VDD/VSS pairs per quadrant, and configurable ball functions supporting multiple alternate functions (AF0–AF15).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core Arm Cortex-A7 microprocessor applications.

Compared with STM32MP131FAE7, the STM32MP157C-DK2 adds real-time M4 co-processing but increases BOM cost and board complexity, while the i.MX 8M Mini offers higher CPU throughput at the expense of integrated hardware security features like TZC and active tamper detection.

Availability

STM32MP131FAE7 is available at Aetrix Electronics and suitable for industrial HMI, edge gateway, and secure IoT endpoint applications requiring stable component supply, long lifecycle assurance, and qualified automotive/industrial temperature grade (-40°C to +125°C).

Supply support for STM32MP131FAE7 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 ICs with strong industrial and IoT focus.

The STM32MP series is designed specifically for Linux-capable embedded applications demanding both application-level performance and real-time responsiveness, combining Arm Cortex-A application cores with Cortex-M real-time cores and hardware security extensions.

FAQ

What is the maximum supported external memory capacity and type for STM32MP131FAE7?

The STM32MP131FAE7 supports up to 1 Gbyte of external DDR memory, including LPDDR2/LPDDR3-1066 (16-bit bus) and DDR3/DDR3L-1066 (16-bit bus). It includes an integrated DDR controller with 8-bit ECC support for error correction, and the LFBGA289 package provides dedicated DQ/DQS/DM pins routed for optimal signal integrity in high-speed memory interfaces.

Does STM32MP131FAE7 include hardware support for secure boot and runtime security?

Yes. STM32MP131FAE7 implements a hardware-rooted secure boot chain using OTP fuses to store public keys, verifies signed firmware images in ROM code, and loads them into secure SRAM before execution. It includes TrustZone® peripherals, 12 tamper pins (5 active), AES-256 with DPA protection, PKA for ECC/RSA, and a TRNG compliant with AIS-31 Class 2 standards.

What are the key low-power capabilities of STM32MP131FAE7 in industrial applications?

STM32MP131FAE7 offers five low-power modes: Sleep, Stop, LPLV-Stop, LPLV-Stop2 (2.5 µA typical), and Standby with DDR retention. It features a secure RTC with sub-second accuracy, backup domain SRAM (8 KB), and VBAT operation. These enable battery-backed operation, fast wake-up (<100 µs from LPLV-Stop2), and continuous timestamping during main power loss in industrial logging systems.

How does the STM32MP131FAE7 handle Ethernet timing precision for industrial protocols?

The integrated Gigabit Ethernet MAC supports IEEE 1588v2 hardware timestamping with nanosecond resolution, enabling precise time synchronization across distributed nodes. It includes dedicated timestamp registers, PTP event message handling in hardware, and RGMII/MII/RMII PHY interfaces with configurable delay compensation-critical for deterministic motion control and synchronized sensor networks.