STM32MP157DAC3 - Dual Cortex-A7 650MHz MPU | STMicroelectronics
MPN： STM32MP157DAC3 ✓ 啟用中STM32MP157DAC3 概覽
An MPU (microprocessor unit) sits above a microcontroller in the embedded hierarchy: unlike an MCU that runs bare-metal or RTOS firmware from internal flash, an MPU boots a full operating system such as Linux from external DDR memory and storage, while this device uniquely also embeds an STM32-class Cortex-M4 core for hard real-time tasks, bridging the gap between application processors and microcontrollers.
Key features include the dual Arm Cortex-A7 cores at 650 MHz for Linux application processing, the Cortex-M4 at 209 MHz for deterministic real-time control, and a rich peripheral set with CAN FD for industrial networking. The STM32MP157 family is documented with up to 37 communication interfaces and 29 timers on higher variants, providing extensive connectivity for industrial designs.
Architecturally, the device combines the Arm Cortex-A application domain with an STM32MCU-style peripheral domain, sharing a common ecosystem: developers use the STM32Cube ecosystem, OpenSTLinux distribution, and STM32CubeMX configuration tools. This heterogenous multi-core architecture allows Linux on the A7 cores and bare-metal or RTOS firmware on the M4 core, communicating via OpenAMP/RPMsg inter-processor communication.
Typical applications include industrial HMI and touch panels, building automation controllers, gateways with CAN FD and industrial Ethernet, and medical or test instruments needing both a graphical Linux interface and real-time motor or sensor control loops.
A key design consideration is memory: the MPU has no internal flash for code execution, so the BOM must include external DDR3/DDR3L SDRAM and a boot device (eMMC, NAND, SD, or QSPI), and power-tree design must respect the multiple supply rails required by the TFBGA package.
This page synthesizes distributor sourcing data, drop-in alternative analysis within the STM32MP157 family, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 STM32MP157DAC3 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM32MP157DAC3 （相同外形與佔位） — 差異在於 Core Processor, Package, Security, Architecture, Communication Interfaces.
STM32MP157CAC3
✅ 直接替換✗ 缺貨
$24.2 / 單位
查看資料表 →STM32MP157CAD3
✅ 直接替換📋 參考替代品（不在目錄中）
STM32MP157AAC3
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32MP151AAD3
✅ 直接替換聯絡詢價
查看資料表 →STM32MP133CAG3
✅ 直接替換📋 參考替代品（不在目錄中）
STM32MP157DAC3 最大額定值與電氣特性
| Core Processor | Arm dual Cortex-A7 + Cortex-M4 |
| Cortex-A7 Core Frequency | 650 MHz |
| Cortex-M4 Core Frequency | 209 MHz |
| Core Architecture | 2 Core, 32-Bit |
| Series | STM32MP1 |
| Number of Terminals | 361 |
| Package Code | TFBGA |
| Package Shape | Square |
| Terminal Form | BALL |
| Temperature Grade | Industrial |
| 安裝類型 | Surface Mount |
| CAN FD Interface | Yes |
| Display Interface | TFT/MIPI-DSI (per family datasheet) |
| Product Type | Microprocessor, RISC |
| Communication Interfaces (family max) | Up to 37 (STM32MP157C/F variants) |
| Timers (family max) | Up to 29 (STM32MP157C/F variants) |
STM32MP157DAC3 square 腳位配置指南
STM32MP157DAC3（square 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： STM32MP157DAC3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32MP157DAC3 適用於 6 應用s: Industrial HMI and Touch Panels, Industrial Gateways and Edge Controllers, Building Automation Controllers, Test and Measurement Instruments, Medical Monitoring Devices, Robotics and Motor Control Nodes.
Industrial HMI and Touch Panels
The STM32MP157DAC3 fits industrial HMI designs because the STM32MP157 family integrates a TFT display controller with MIPI-DSI interface and a 3D GPU, enabling rich Qt or HTML5-based interfaces under OpenSTLinux on the dual 650 MHz Cortex-A7 cores. The 209 MHz Cortex-M4 independently scans touch, drives buzzers and handles safety interlocks with deterministic latency that Linux cannot guarantee. With 37-class communication interfaces on the family and CAN FD support, the MPU connects directly to PLCs and drives. Design consideration: the HMI framebuffer runs from external DDR3, so memory bandwidth and display resolution should be budgeted together to avoid tearing under peak Ethernet load.
推薦
Industrial Gateways and Edge Controllers
For protocol-conversion gateways, the STM32MP157DAC3 offers CAN FD plus the STM32MP1 family's extensive serial/ Ethernet interfaces, letting one 361-ball TFBGA device terminate industrial fieldbus on the Cortex-M4 while Linux on the Cortex-A7 cores runs MQTT/OPC UA stacks toward the cloud. The dual-core split keeps fieldbus timing immune to Linux scheduling jitter, and the industrial temperature grade suits cabinet installation. Design consideration: galvanic isolation and ESD protection must be added externally on CAN and Ethernet PHY lines; the MPU itself does not integrate them. OpenSTLinux Yocto recipes accelerate integration of secure OTA update frameworks for long-life deployments.
推薦
Building Automation Controllers
Building automation controllers benefit from the STM32MP157DAC3 combination of Linux-class application processing and real-time I/O: the Cortex-A7 cores at 650 MHz run BACnet/KNX protocol stacks and local web dashboards, while the Cortex-M4 at 209 MHz handles deterministic sensor polling, DALI dimming, and HVAC control loops. CAN FD and multiple UART/SPI interfaces integrate meters, access control readers, and gateways. Because the design runs from external DDR and eMMC, long product lifetimes should pair the controller with industrial-grade storage. The single-package solution replaces an SoC-plus-MCU two-chip architecture, cutting BOM count and simplifying certification.
推薦
Test and Measurement Instruments
Benchtop and portable instruments use the STM32MP157DAC3 to combine a Linux UI with hard real-time acquisition: the 209 MHz Cortex-M4 services ADC triggers and precision timing while the dual 650 MHz Cortex-A7 cores run graphical analysis, data logging, and network export. The STM32MP157 family's advanced analog peripherals and 29-timer capability (family max) support PWM stimulus and capture functions. The industrial temperature grade suits field instruments. Design consideration: analog front-end noise must be managed with careful power-plane separation, since the MPU digital switching shares the PCB with sensitive measurement paths; the ST evaluation boards document reference grounding strategies.
推薦
Medical Monitoring Devices
Connected medical monitors leverage the STM32MP157DAC3 to run patient-facing GUIs under Linux on the Cortex-A7 cores while the Cortex-M4 performs deterministic sample timing and alarm watchdog functions, a split that simplifies safety argumentation versus single-core Linux designs. The MIPI-DSI display path drives touch screens; industrial temperature grade covers demanding clinical environments. The 3D GPU accelerates waveform rendering. Design consideration: medical designs must validate the boot chain and enable readout protection/secure boot options available in the STM32MP157 security roadmap, and external memory selection should prioritize components with long-term availability commitments for regulated product lifecycles.
推薦
Robotics and Motor Control Nodes
Robot joints and mobile-robot controllers pair the STM32MP157DAC3's Cortex-M4 core at 209 MHz with hardware timers for multi-axis FOC motor control at deterministic loop rates, while the dual Cortex-A7 cores at 650 MHz run ROS 2 or trajectory planning under Linux. CAN FD provides the intra-robot bus to other joints and sensors. The heterogenous architecture avoids latency spikes from Linux in current loops, which is critical for torque control stability. Design consideration: gate-driver and current-sense circuitry remain external; the ST motor-control ecosystem provides reference firmware for the M4 core to shorten integration time.
推薦
推薦產品摘要
工程參考資料，適用於 STM32MP157DAC3 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM32MP157CAC3 | STM32MP157CAD3 | STM32MP157AAC3 | STM32MP151AAD3 |
|---|---|---|---|---|---|
| Package | 361-ball TFBGA (12x12 class) | 361-ball TFBGA - same | 361-ball TFBGA - same | 361-ball TFBGA - same | 361-ball TFBGA - same family |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Cortex-A7 Cores / Frequency | 2 x 650 MHz | 2 x 650 MHz | 2 x 650 MHz | 2 x 650 MHz | dual A7 (per family) |
主要差異化特點
- Heterogenous dual A7 + M4 architecture (對比STM32MP151AAD3)
- Feature/security line selection flexibility (對比STM32MP157CAC3)
- 650 MHz speed grade with industrial temperature (對比STM32MP157AAC3)
設計說明
The STM32MP1 series requires a multi-rail power tree (core VCORE, VDD, VDDA, DDR rails and others) sequenced per the ST power supply guidelines. ST reference designs use the STPMIC1 power PMIC companion, which integrates the required buck/buck-boost/LDO rails plus DDR termination and I2C control - strongly recommended over discrete regulators for first-pass success. Verify power-up ordering in the ST reference manual before layout freeze; incorrect sequencing can prevent boot or stress internal ESD structures.
The 361-ball TFBGA fine-pitch ballout demands an HDI stackup. Use microvia-in-pad or blind vias to escape inner ball rows, and plan DDR3/DDR3L routing with length matching within the groups specified in the ST hardware development application note. Provide solid, unbroken reference planes under the DDR bus and place termination per the ST memory design guide. Estimate: a 4-layer board is generally insufficient; plan 6-10 layers for a production MPU design.
Two frequent mistakes: (1) forgetting that code executes from external DDR - boot media (eMMC/SD/NAND/QSPI) and its boot-pin strap configuration must be designed in from day one; (2) underestimating the Cortex-M4 core - it shares some peripherals and package pins with the A7 domain, so pin muxing must be co-planned across Linux device tree and M4 firmware to avoid resource conflicts. Use STM32CubeMX pinout conflict checking early.
合規資訊
Compliance data was not present in the sourced web data for this specific MPN. ST standard MPU production is generally RoHS/lead-free, but per data authenticity rules this must be confirmed on the ST product page compliance documents before reliance.
