MSP432E401Y - 120MHz Cortex-M4F Ethernet MCU | TI
MPN: MSP432E401Y ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.15 | $7.15 |
| 10 | $6.45 | $64.50 |
| 100 | $5.72 | $572.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.58 | $4,580.00 |
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
$6.38 / Unit
View Datasheet →MSP432E401Y Maximum Ratings & Electrical Characteristics
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-Bit |
| Speed | 120 MHz |
| Flash Size | 1 MB (1M x 8) |
| RAM Size | 256 kB |
| Connectivity | Ethernet MAC + PHY, CAN, USB-OTG, I2C, SPI, UART, Quad-SPI (QSSI) |
| Peripherals | Ethernet, CAN, USB-OTG, PWM, WDT, DMA |
| Package | 128-TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Platform | SimpleLink MCU |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Supply Voltage | [DATA_NEEDED: supply voltage range] |
| GPIO Count | [DATA_NEEDED: number of GPIO] |
| ADC Resolution | [DATA_NEEDED: ADC resolution] |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Evaluation Kit | MSP-EXP432E401Y LaunchPad |
MSP432E401Y 128-tqfp (14x14 mm) Pin Configuration Guide
Complete pinout information for MSP432E401Y (128-tqfp (14x14 mm) 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, IoT Wired Connectivity Nodes, Building Automation and Remote Monitoring, CAN-Based Industrial Control, Networked Instrumentation and Test Equipment.
Industrial Ethernet Gateways
The MSP432E401Y integrates a 10/100 Ethernet MAC and PHY on-chip, eliminating an external PHY and magnetics-side BOM cost in industrial gateway nodes. Its 120 MHz Cortex-M4F core with FPU handles protocol stacks (TCP/IP, Modbus TCP, OPC UA) while the 256 kB RAM buffers packet data. CAN 2.0 provides fieldbus bridging in the same chip, making single-chip Ethernet-to-CAN gateways practical.
Recommended
IEEE 1588 PTP Precision Timing
The MSP432E401Y's Ethernet MAC supports hardware timestamping used by IEEE 1588 PTP, and community projects have demonstrated PTP master implementations on this part (e.g., GPSDO PTP master with temperature-compensated DCXO). The 120 MHz Cortex-M4F with DSP instructions executes servo algorithms while the integrated PHY reduces timestamping jitter compared to discrete PHY solutions.
Recommended
IoT Wired Connectivity Nodes
As part of the SimpleLink platform, the MSP432E401Y shares a single SDK with Wi-Fi, BLE, Sub-1 GHz, Zigbee, and Thread devices, making it ideal as the wired backbone node in mixed-connectivity IoT systems. One development environment, one SDK, and pin-compatible migration paths reduce total software investment across an entire product line of connected sensors and controllers.
Recommended
Building Automation and Remote Monitoring
Building controllers benefit from the MSP432E401Y's combination of Ethernet (BACnet/IP-ready), CAN, UART, and I2C interfaces. The integrated PHY and 1 MB flash accommodate protocol stacks plus application code without external storage, while the 128-TQFP package provides enough GPIO for relay drivers, sensor buses, and HMI connections in wall-mounted and panel controllers.
Recommended
CAN-Based Industrial Control
With an on-chip CAN 2.0 controller plus Ethernet, the MSP432E401Y serves as an intelligent CAN node that also reports to supervisory systems over the network. The 120 MHz core with hardware FPU executes motor control or closed-loop algorithms, and SimpleLink SDK drivers accelerate CAN and Ethernet bring-up, shortening development cycles in factory automation retrofits.
Recommended
Networked Instrumentation and Test Equipment
Test and measurement instruments use the MSP432E401Y's Ethernet port for LXI-style remote control and data streaming, USB-OTG for local connectivity, and Quad-SPI for fast waveform memory access. The 1 MB flash supports in-field firmware updates over the network, and the 14x14 mm TQFP fits compact benchtop and rack module form factors cost-effectively.
Recommended
Recommended Products Summary
Engineering reference data for MSP432E401Y — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MSP432E411Y | TM4C129ENCPDT | TM4C1294NCPDT |
|---|---|---|---|---|
| Package | 128-TQFP (14x14) | NFBGA | 128-TQFP - same | 128-TQFP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics |
| Core | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 168 MHz |
| Flash | 1 MB | 512 kB | 512 kB | 1 MB |
| RAM | 256 kB | [DATA_NEEDED] | 256 kB | 192 kB |
| On-chip Ethernet PHY | Yes (MAC + PHY) | Yes | Yes | MAC only, external PHY needed |
| SDK / Ecosystem | SimpleLink (unified SDK) | SimpleLink - same | TivaWare (legacy) | STM32Cube/HAL |
| Software Compatibility | MSP432E4 TRM register map | Identical register map | Pin-compatible, different SDK | None - full rewrite |
| CAN | Yes (CAN 2.0) | Yes | Yes | Yes (bxCAN) |
Key Differentiators
- Integrated Ethernet MAC and PHY in one chip (vs STM32F407VGT6)
- Unified SimpleLink SDK across wireless and wired MCUs (vs TM4C1294NCPDT)
- Identical register map to MSP432E411Y (vs MSP432E411Y)
Design Notes
When replacing a TM4C129x device with the MSP432E401Y, the hardware is pin-to-pin compatible per TI E2E forum, but firmware must be migrated to the SimpleLink SDK - TivaWare code does not run unmodified. Budget software porting time and use the shared MSP432E4 Technical Reference Manual register map (identical between MSP432E401Y and MSP432E411Y) to reuse low-level drivers.
The 128-TQFP (14x14 mm) exposed-lead package requires a standard QFP land pattern; use thermal vias under the center paddle area if present and solid ground plane for Ethernet PHY return currents. Keep magnetics within 25 mm of the PHY pins and route TX/RX pairs as 100-ohm differential pairs per the datasheet layout guidelines.
Provide clean 3.3V analog supply to the on-chip Ethernet PHY; use a ferrite bead or dedicated LDO rail for the PHY analog pin and 100 nF decoupling at every supply pin plus bulk capacitance near the device. Poor PHY supply filtering shows up directly as Ethernet packet-error-rate degradation.
Compliance Information
[DATA_NEEDED: RoHS/REACH/lead-free status from TI product page ordering table]
