STMicroelectronics STM32MP157FAB1

Overview

STM32MP157FAB1 from STMicroelectronics is a dual-core Arm® Cortex®-A7 (800 MHz) + Cortex®-M4 microprocessor unit with 3D GPU, MIPI DSI, TFT-LCD controller, and 37 communication interfaces including dual CAN FD and Gigabit Ethernet. It integrates 708 KB on-chip SRAM, TrustZone® security, hardware crypto accelerators (AES/SHA/HMAC/RNG), and supports LPDDR3/DDR3 up to 1 Gbyte for industrial HMI, edge gateway, and multimedia-rich embedded applications.

For engineers reviewing the STM32MP157FAB1 datasheet, STM32MP157FAB1 pinout, STM32MP157FAB1 application, or STM32MP157FAB1 equivalent, key selection considerations include dual-core Linux-capable architecture, 37 peripheral count with time-triggered CAN (TTCAN), 29 timers with RTC sub-second accuracy, and TFBGA361 (12 × 12 mm, 0.5 mm pitch) package compatibility with industrial thermal and EMI requirements.

Technical Context

The device implements a heterogeneous dual-core architecture: two Cortex-A7 cores run Linux or Android in secure/non-secure worlds via TrustZone®, while the Cortex-M4 (209 MHz) handles real-time control, sensor fusion, or low-latency I/O offload. The AXI/AHB interconnect matrix enables concurrent high-bandwidth data paths between CPU, GPU, DDR controller, and peripherals.

Its clock system includes six fractional PLLs supporting precise frequency synthesis for display (DSI pixel clock up to 90 MHz), audio (SAI/I2S with internal audio PLL), and Ethernet (IEEE 1588v2 timestamping). Security is enforced through BSEC OTP, active tamper detection, and TrustZone address space controllers (TZC) for DDR memory partitioning.

Key Specifications

Pinout & Package

STM32MP157FAB1 uses a TFBGA361 package (12 × 12 mm, 0.5 mm ball pitch, B031 marking), RoHS-compliant and ECOPACK2 certified. This 361-ball grid array supports high I/O density (up to 176 GPIOs), DDR signal integrity, and thermal dissipation suitable for extended industrial temperature operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NXP i.MX 8M Mini and Renesas RZ/G2L, STM32MP157FAB1 uniquely balances Linux capability, real-time M4 co-processing, native DSI, dual CAN FD with TTCAN, and hardware crypto in a thermally efficient TFBGA361 package - making it optimal for industrial HMIs and protocol gateways where display integration and fieldbus determinism are critical.

Availability

STM32MP157FAB1 is available at Aetrix Electronics and suitable for industrial HMI terminals, edge protocol gateways, smart building intercoms, and medical imaging edge nodes requiring stable component supply across long product lifecycles.

Supply support for STM32MP157FAB1 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/mixed-signal devices for industrial, automotive, and consumer markets.

The STM32MP series targets Linux-capable embedded applications requiring real-time responsiveness, rich multimedia, and hardware-enforced security - bridging the gap between microcontrollers and application processors for industrial edge computing.

FAQ

What is the maximum DDR memory capacity supported by STM32MP157FAB1?

STM32MP157FAB1 supports up to 1 Gbyte of external DDR memory, compatible with LPDDR2/LPDDR3-1066 (16/32-bit) and DDR3/DDR3L-1066 (16/32-bit). The DDR controller includes 8-bit ECC support for enhanced reliability in industrial applications, and the TZC enforces secure memory access boundaries per TrustZone policy.

Does STM32MP157FAB1 include hardware support for time-sensitive networking (TSN)?

While STM32MP157FAB1 does not implement full TSN standards (e.g., IEEE 802.1AS-2020, 802.1Qbv), its Gigabit Ethernet GMAC includes IEEE 1588v2 hardware timestamping, PTP event message handling, and sub-nanosecond clock synchronization - enabling TSN endpoint functionality when paired with appropriate software stack and external PHY.

Can the Cortex-M4 core run independently without the Cortex-A7 cores powered?

Yes - the Cortex-M4 can operate in standalone mode with Cortex-A7 cores held in reset or powered down. This is enabled via the IPCC and HSEM peripherals, allowing the M4 to manage sensors, motor control, or low-power monitoring while the A7 subsystem remains inactive, reducing total system current to <2 µA in Standby mode with RTC active.

What display interfaces are natively supported without external bridge ICs?

STM32MP157FAB1 natively supports MIPI DSI (2 lanes, up to 1 Gbps/lane) and RGB888 parallel LCD-TFT (up to WXGA @60 fps or Full HD @30 fps) via its LTDC controller. No external bridge IC is required for either interface, enabling direct panel connection and reducing BOM cost and PCB area in display-centric designs.