MSP432E401Y - 120MHz Cortex-M4F Ethernet MCU, 1MB Flash | TI
MPN： MSP432E401Y ✓ 啟用中MSP432E401Y 概覽
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals into one package. It sits at the heart of the embedded hierarchy: microcontroller unit -> embedded processor -> semiconductor device. The MSP432E401Y belongs to the SimpleLink MCU platform, which spans Wi-Fi, Bluetooth low energy, Sub-1 GHz, Ethernet, Zigbee, Thread, and host MCUs - all sharing a common, easy-to-use development environment with a single core software development kit (SDK) and rich tool set.
Key features include the 120 MHz Cortex-M4F core with a hardware floating point unit (FPU) and DSP instructions, 1 MB flash for code storage, 256 kB SRAM for buffers and stacks, and an integrated 10/100 Ethernet MAC and PHY that enables a single-chip networked node without an external PHY. CAN 2.0 support addresses industrial fieldbus requirements.
Technically, the MSP432E401Y uses the Arm Cortex-M4F architecture with an advanced interrupt architecture, and its peripheral memory map is shared across the MSP432E4 family as documented in the MSP432E4 Technical Reference Manual (Rev. A). This simplifies software porting between family members and from the legacy TM4C129 series, which is confirmed as pin-to-pin compatible on the TQFP packages per TI E2E forum guidance.
Typical applications include industrial Ethernet gateways and IoT nodes, IEEE 1588 PTP precision timing masters, building automation and remote monitoring nodes, and CAN-based industrial control - anywhere cost-sensitive control processing plus wired connectivity is required. The MSP-EXP432E401Y LaunchPad kit provides a fast evaluation path.
Design consideration: when migrating from TM4C129x devices, the pinout is pin-to-pin compatible, but software must move to the SimpleLink SDK; TM4C129 MCUs are not part of the SimpleLink family and do not offer its connectivity ecosystem.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 MSP432E401Y — 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： MSP432E401Y （相同外形與佔位） — 差異在於 Core Processor, Package.
TM4C129ENCPDT
✅ 直接替換📋 參考替代品（不在目錄中）
TM4C1294NCPDTI3
✅ 直接替換聯絡詢價
查看資料表 →MSP432E401Y 最大額定值與電氣特性
| Core Processor | Arm Cortex-M4F (32-bit) |
| Core Clock Frequency | 120 MHz |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 256 kB |
| Connectivity | Ethernet 10/100 (MAC + PHY), CAN 2.0, USB-OTG, QSPI (QSSI), I2C, SPI, UART |
| 封裝 | 128-TQFP (14 x 14 mm) |
| 安裝類型 | Surface Mount |
| Platform | SimpleLink MCU platform |
| Floating Point Unit | Yes (hardware FPU) |
| Ordering Part Number (package variant) | MSP432E401YTPDTR |
| Reference Manual | MSP432E4 SimpleLink Microcontrollers Technical Reference Manual Rev. A |
MSP432E401Y msp432e401ytpdtr 腳位配置指南
MSP432E401Y（msp432e401ytpdtr 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MSP432E401Y.
請參閱 資料表 以查看完整腳位配置。
典型應用
MSP432E401Y 適用於 6 應用s: Industrial Ethernet Gateways, IEEE 1588 PTP Precision Timing Master, Building Automation and Remote Monitoring, CAN-Based Industrial Control, IoT Wired Nodes and Edge Devices, Test and Measurement Instrumentation.
Industrial Ethernet Gateways
The MSP432E401Y fits industrial Ethernet gateways because its integrated 10/100 Ethernet MAC and PHY deliver a single-chip networked node, eliminating the external PHY and magnetics-side complexity cost of a two-chip solution. With 1 MB flash and 256 kB SRAM, the part has room for TCP/IP stacks, protocol conversion firmware, and packet buffers, while the 120 MHz Cortex-M4F core with hardware FPU handles filtering and forwarding within line-rate budgets. CAN 2.0 on the same die bridges Ethernet field traffic to CAN-based actuators, and QSPI, SPI, UART, and I2C connect local I/O. The trade-off versus a larger MPU gateway is lower throughput, but for cost-effective control-plus-connectivity nodes the integration advantage is decisive.
推薦
IEEE 1588 PTP Precision Timing Master
For IEEE 1588 PTP precision timing, the MSP432E401Y provides the integrated Ethernet MAC with hardware support in the MSP432E4 peripheral set and a 120 MHz Cortex-M4F core fast enough to service Sync, Delay_Req, and Follow_Up messages inside protocol timing windows. The public GPSDO IEEE PTP Master project on Hackaday.io demonstrates exactly this use, pairing the MSP432E401Y with a GPS-disciplined DCXO for software temperature compensation. The 256 kB SRAM holds ring buffers that smooth timestamp jitter, and the 1 MB flash stores compensation tables. Against the TM4C1294NCPDT, the MSP432E401Y offers the same pinout plus SimpleLink SDK software portability, which matters for multi-protocol timing products.
推薦
Building Automation and Remote Monitoring
In building automation and remote monitoring nodes, the MSP432E401Y connects sensors and controllers onto a wired Ethernet backbone without external PHY silicon, and its UART, I2C, and SPI interfaces aggregate meters, HVAC sensors, and access devices. The 120 MHz Cortex-M4F with FPU runs control loops and lightweight web servers simultaneously within the 256 kB SRAM budget, while 1 MB flash leaves room for OTA firmware images and data logging. CAN 2.0 links legacy field devices. Because the part belongs to the SimpleLink platform with a single SDK, adding a wireless SimpleLink companion device later reuses the same development environment, protecting the software investment as building networks evolve toward IP everywhere.
推薦
CAN-Based Industrial Control
The MSP432E401Y addresses CAN-based industrial control by combining a CAN 2.0 controller with the 120 MHz Cortex-M4F core and hardware FPU, enabling deterministic control loops and fieldbus communication on one chip. Its 1 MB flash supports large state machines and diagnostics logging, and 256 kB SRAM buffers CAN traffic bursts. The integrated Ethernet MAC lets the same controller uplink to supervisory SCADA systems, removing a separate gateway chip from the board. Peripherals including SPI, I2C, UART, and QSSI drive drives, encoders, and HMIs. Compared with the TM4C129 pin-compatible parts, the MSP432E401Y adds SimpleLink SDK consistency for teams that also deploy TI wireless nodes elsewhere in the plant.
推薦
IoT Wired Nodes and Edge Devices
As a SimpleLink Ethernet MCU, the MSP432E401Y is positioned for IoT nodes that require wired connectivity with real control processing: smart kiosks, energy monitors, and edge data concentrators. The single-core SimpleLink SDK and common tool set shared across Wi-Fi, Bluetooth low energy, Sub-1 GHz, Ethernet, Zigbee, and Thread MCUs means one software environment serves the wired node and any wireless siblings, cutting integration time. The 120 MHz core, 1 MB flash, and 256 kB SRAM run TLS-secured MQTT clients and local analytics, while USB-OTG provides local service access. Cost-effectiveness is a stated design goal of the MSP432E4 family, making per-node economics viable at fleet scale.
推薦
Test and Measurement Instrumentation
The MSP432E401Y serves test and measurement instruments that need an embedded Ethernet port for remote control (SCPI-over-LAN), data streaming, and firmware updates. The 120 MHz Cortex-M4F with DSP instructions post-processes ADC capture streams, the 1 MB flash stores calibration constants and instrument firmware with dual-image OTA capability, and 256 kB SRAM buffers acquisition data before Ethernet transmission. USB-OTG supports direct bench-PC connectivity, and QSSI interfaces high-speed acquisition front ends. Instruments built on this MCU also benefit from the pin-compatible TM4C129 drop-in path, giving procurement teams a second sourced part on the identical PCB footprint if supply of the MSP432E401Y tightens.
推薦
推薦產品摘要
工程參考資料，適用於 MSP432E401Y — 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 | TM4C129ENCPDT | TM4C1294NCPDT |
|---|---|---|---|
| Package | 128-TQFP (14 x 14 mm) | 128-TQFP (14 x 14 mm) - same | 128-TQFP (14 x 14 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Core | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F |
| Ethernet | 10/100 MAC + PHY integrated | 10/100 MAC + PHY integrated | 10/100 MAC + PHY integrated |
| Software Ecosystem | SimpleLink SDK | TivaWare (not SimpleLink) | TivaWare (not SimpleLink) |
| Pin-to-Pin Compatibility | Reference | Pin-to-pin compatible (TI E2E confirmed) | Pin-compatible (project-documented) |
主要差異化特點
- SimpleLink platform membership (對比TM4C1294NCPDT)
- Same PCB footprint with second-source path (對比TM4C129ENCPDT)
- Family upgrade path within identical register map (對比MSP432E411Y)
設計說明
Do not assume software portability between TM4C129 and MSP432E401Y despite pin-to-pin hardware compatibility. TI confirms on the E2E forum that TM4C129 MCUs are not compatible with the SimpleLink MCU family, so firmware built on TivaWare must be reworked onto the SimpleLink SDK when swapping the same physical PCB. Plan the migration as a software project with its own test cycle even though no board respin is needed.
The MSP432E401Y integrates the Ethernet PHY, so follow the TI datasheet magnetics layout guidance closely: keep the PHY differential pairs matched-length, route over a solid ground plane, and place the required termination and decoupling network per the reference design on the MSP-EXP432E401Y LaunchPad. Using the LaunchPad schematic as the layout starting point substantially reduces EMC risk for first-time Ethernet boards.
The MSP432E401Y has multiple supply domains (core and I/O rails per the datasheet); supply sequencing and per-rail decoupling must follow the datasheet power-up requirements to avoid latch-up or unreliable boot. Estimated: confirm exact rail voltages and sequencing order against the current TI datasheet revision before PCB power-tree sign-off, since the exact values were not captured in this record.
合規資訊
Compliance status was not present in the verified web data; consult the TI product page quality section for RoHS/REACH certificates.
