STMicroelectronics STM32MP131FAG7

Overview

STM32MP131FAG7 from STMicroelectronics is a dual-core Arm® Cortex®-A7 microprocessor operating up to 1 GHz, featuring TrustZone® security, 1× Gigabit Ethernet MAC, 1× 12-bit ADC (5 Msps), and hardware crypto acceleration (AES-128/192/256, SHA-256/512, PKA). It integrates 168 KB on-chip SRAM, supports LPDDR2/LPDDR3-1066 and DDR3/DDR3L-1066 external memory, and targets secure industrial HMI, edge gateway, and smart appliance control applications.

For engineers reviewing the STM32MP131FAG7 datasheet, STM32MP131FAG7 pinout, STM32MP131FAG7 application, or STM32MP131FAG7 equivalent, key selection considerations include its dual Cortex-A7 architecture with L2 cache, TrustZone-enabled peripheral isolation, DDR retention in Standby mode, and support for USB 2.0 HS Host + OTG simultaneously - critical for Linux-capable embedded systems requiring real-time responsiveness and secure boot.

Technical Context

The STM32MP131FAG7 implements a heterogeneous dual-core Arm Cortex-A7 subsystem with 128 KB unified L2 cache, NEON™ SIMD extension, and TrustZone® for secure world/non-secure world partitioning. Its interconnect comprises a 64-bit AXI bus matrix (266 MHz) and 32-bit AHB matrix (209 MHz), enabling concurrent high-bandwidth data paths between CPU, DDR controller, and peripherals.

Security is enforced via BSEC OTP fuses (3072-bit, including 96-bit UID and 256-bit HUK), tamper detection (12 pins), secure RTC, and hardware-accelerated AES-256 on-the-fly DRAM encryption. Clock management includes four fractional PLLs supporting IEEE 1588v2 time-stamping in Ethernet and audio-class accuracy for SAI/I2S via dedicated audio PLL.

Key Specifications

Pinout & Package

LFBGA289 package (14 × 14 mm, 0.8 mm pitch), RoHS-compliant and ECOPACK2 certified. Ball count: 289; thermal pad exposed on underside for enhanced heat dissipation in industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core Arm application processor applications.

Compared with STM32MP131FAG7, the STM32MP157C-DK2 offers higher graphics throughput but consumes ~30% more active power, while the i.MX 8M Mini provides broader peripheral flexibility at the cost of weaker hardware-enforced security partitioning - making STM32MP131FAG7 optimal for cost-sensitive, security-first edge controllers where DDR retention and tamper resilience are mandatory.

Availability

STM32MP131FAG7 is available at Aetrix Electronics and suitable for industrial HMI, smart home gateways, edge AI appliances, and medical data loggers requiring stable component supply across extended product lifecycles.

Supply support for STM32MP131FAG7 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 components for industrial, automotive, and consumer markets.

The STM32MP series is ST's Linux-capable microprocessor line targeting secure, real-time edge computing applications - combining Cortex-A application cores with Cortex-M real-time co-processors and hardware security engines for deterministic, trusted execution.

FAQ

What boot sources does the STM32MP131FAG7 support?

The STM32MP131FAG7 supports boot from eMMC, SD card, SPI NOR flash, Quad-SPI NOR flash, NAND flash, and USB mass storage via BOOT0/BOOT1 pin configuration. Boot mode is latched at power-on reset and validated against secure boot chain policies stored in BSEC fuses.

Does the STM32MP131FAG7 include a built-in GPU or display controller?

No, the STM32MP131FAG7 does not integrate a GPU or display controller. It supports LVDS or RGB parallel interfaces via GPIO remapping and external bridge ICs (e.g., ST's ST7701S), but graphics acceleration and frame buffer management must be handled by software or external components.

How is TrustZone® implemented on the STM32MP131FAG7?

TrustZone® is implemented at both CPU and system level: Cortex-A7 cores enforce secure/non-secure world separation via monitor mode, while ETZPC (Embedded TrustZone Protection Controller) gates peripheral access and TZC (TrustZone Address Space Controller) restricts DDR memory regions. All secure peripherals require explicit permission via BSEC-configured registers.

What is the maximum supported DDR clock frequency for LPDDR3 operation?

The STM32MP131FAG7 supports LPDDR3-1066 operation, meaning a maximum DDR clock frequency of 533 MHz (1066 MT/s data rate) with 16-bit bus width. This requires strict PCB layout adherence to JEDEC JESD209-3B timing constraints and proper termination for signal integrity.