MSP432E401Y - 120MHz Cortex-M4F Ethernet MCU, 1MB Flash | TI
MPN: MSP432E401Y ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.86 | $6.86 |
| 10 | $6.17 | $61.70 |
| 100 | $5.49 | $549.00 |
| 500 | $4.94 | $2,470.00 |
| 1,000 | $4.4 | $4,400.00 |
Drop-in alternatives for MSP432E401Y — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TM4C129ENCPDT
✅ Drop-In📋 Reference alternative (not in catalog)
TM4C1294NCPDTI3
✅ Drop-In✓ In Stock
$9.44 / Unit
View Datasheet →MSP432E401Y Maximum Ratings & Electrical Characteristics
| 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 |
| Package | 128-TQFP (14 x 14 mm) |
| Mounting Type | 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 Pin Configuration Guide
Complete pinout information for MSP432E401Y (msp432e401ytpdtr package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MSP432E401Y.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
MSP432E401Y is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for MSP432E401Y — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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) |
| Flash | 1 MB | [DATA_NEEDED] | [DATA_NEEDED] |
| Price (qty 1) | 6.86 USD as of 2026-08-30 | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- SimpleLink platform membership (vs TM4C1294NCPDT)
- Same PCB footprint with second-source path (vs TM4C129ENCPDT)
- Family upgrade path within identical register map (vs MSP432E411Y)
Design Notes
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.
Compliance Information
Compliance status was not present in the verified web data; consult the TI product page quality section for RoHS/REACH certificates.
