STMicroelectronics STM32MP151CAB3T

Overview

STM32MP151CAB3T from STMicroelectronics is a dual-core Arm® Cortex®-A7 (800 MHz) + Cortex®-M4 (209 MHz) microprocessor unit with TrustZone®, 708 KB on-chip SRAM, LPDDR2/LPDDR3/DDR3 memory support up to 1 Gbyte, and integrated LCD-TFT controller supporting WXGA@60 fps. It delivers heterogeneous processing for Linux-capable edge nodes in industrial HMIs and gateway devices requiring real-time control and rich UI.

For engineers reviewing the STM32MP151CAB3T datasheet, STM32MP151CAB3T pinout, STM32MP151CAB3T application, or STM32MP151CAB3T equivalent, key selection considerations include dual-core isolation via TrustZone®, DDR retention in Standby mode (2 µA), hardware crypto acceleration (AES-256/HASH/RNG), and 35 communication interfaces including dual USB 2.0 HS + OTG and Gigabit Ethernet GMAC.

Technical Context

The device implements a split-architecture SoC: the Cortex-A7 subsystem runs Linux-based applications with AXI interconnect (266 MHz) and 256 KB L2 cache, while the Cortex-M4 handles deterministic real-time tasks with dedicated AHB SRAM and independent debug access. Memory coherency is managed via hardware semaphore (HSEM) and inter-processor communication controller (IPCC).

Security is enforced at silicon level through Secure Boot, TrustZone address space controller (TZC) for DDR, embedded tamper detection, and isolated M4 resources. Clocking uses five fractional PLLs-including audio PLL for SAI I2S accuracy-and supports IEEE 1588v2 timestamping in GMAC for time-sensitive networking.

Key Specifications

Pinout & Package

STM32MP151CAB3T is packaged in a 361-ball TFBGA (12 × 12 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Ball mapping follows B031 mechanical specification per STMicroelectronics DS12501 Rev 9.

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, STM32MP151CAB3T offers unique integration of TFT controller, TrustZone peripheral protection, and 2 µA Standby with DDR retention-making it optimal for cost-sensitive, power-constrained industrial HMIs where display and security are tightly coupled.

Availability

STM32MP151CAB3T is available at Aetrix Electronics and suitable for industrial HMIs, smart gateways, medical display terminals, and automated retail kiosks requiring stable component supply across extended product lifecycles.

Supply support for STM32MP151CAB3T 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 vertical manufacturing capabilities.

The STM32MP series targets Linux-capable edge devices needing real-time responsiveness, security, and rich human-machine interaction-designed specifically for industrial automation, building control, and medical equipment where certification readiness and long-term supply are critical.

FAQ

What boot sources does STM32MP151CAB3T support?

It supports six primary boot modes: eMMC, SD card, NAND flash, Quad-SPI NOR/NAND, USB mass storage, and UART-based serial download. Boot configuration is set via BOOT0 pin and optional BOOT1 strap; firmware is authenticated using Secure Boot with hash verification against OTP-stored keys.

Does STM32MP151CAB3T include hardware support for real-time Ethernet protocols?

Yes-it integrates Gigabit Ethernet MAC (GMAC) with IEEE 1588v2 hardware timestamping, MII/RMII/GMII/RGMII PHY interfaces, and PTP event message filtering. This enables deterministic synchronization for PROFINET IRT, EtherCAT master, and TSN endpoint implementations without external timing ICs.

How is TrustZone implemented across CPU and peripherals?

TrustZone operates at three levels: (1) Cortex-A7 core-level secure/non-secure state switching, (2) TZC-400 controller enforcing DDR access permissions per region, and (3) ETZPC configuring peripheral register banks as secure/non-secure. The Cortex-M4 runs exclusively in secure world and manages secure peripherals like RNG and cryptographic accelerators.

What is the maximum resolution and refresh rate supported by the integrated LCD-TFT controller?

The LTDC supports up to WXGA (1366×768) at 60 fps or Full HD (1920×1080) at 30 fps with RGB888 interface. Pixel clock frequency reaches 90 MHz, and dual-layer composition with alpha blending and programmable color LUT enables advanced UI effects without GPU assistance.