TM4C1294NCPDTI3 - 120MHz Cortex-M4F MCU 1MB Flash | TI
MPN: TM4C1294NCPDTI3 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.9 | $14.90 |
| 10 | $13.41 | $134.10 |
| 100 | $11.92 | $1,192.00 |
| 500 | $10.43 | $5,215.00 |
| 1,000 | $9.44 | $9,440.00 |
TM4C1294NCPDTI3 Overview
A microcontroller (MCU) is a compact integrated circuit that governs specific operations in embedded systems, combining a processor core, memory, and programmable peripherals on a single die. In the product hierarchy, the TM4C1294NCPDTI3 sits within ARM Cortex-M4F core -> Tiva C Series -> TM4C129x family, and it is code-compatible across the Tiva C lineup, letting designers scale designs without rewriting firmware.
Key features include the integrated 10/100 Ethernet MAC+PHY for direct network attachment without an external PHY, dual 12-bit ADCs for analog acquisition, and multiple UART, I2C, SPI, and CAN channels. The Cortex-M4F core adds a hardware floating-point unit (FPU), DSP instructions, and a memory protection unit (MPU) for firmware reliability. The industrial temperature grade covers -40C to +85C.
Architecturally, the device pairs the 120 MHz M4F pipeline with 256 KB of on-chip SRAM and 1 MB of flash, a JTAG/SWD debug interface, and TI's TivaWare peripheral driver library. The DSP/FPU acceleration enables real-time control loops and digital signal processing without an external co-processor, while the MPU helps isolate critical code regions in safety-conscious firmware architectures.
Typical applications include industrial automation nodes, IoT gateways, building automation and smart-grid equipment, networked control systems, and motor control. The integrated Ethernet MAC+PHY removes external components in many designs, cutting BOM cost and board area.
Design consideration: decouple all VDD and VDDA pins with low-ESR ceramic capacitors placed close to the package, follow datasheet guidance for the 1.2V core regulator, and exploit low-power sleep modes in energy-sensitive nodes.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TM4C1294NCPDTI3 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TM4C1294NCPDTI3 (same form factor and footprint) — differing in Package, Core Processor, Ethernet, Series, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TM4C1294NCPDTT3
✅ Drop-In📋 Reference alternative (not in catalog)
TM4C1294NCPDTI
✅ Drop-In📋 Reference alternative (not in catalog)
TM4C1292NCPDTI3
✅ Drop-In📋 Reference alternative (not in catalog)
TM4C129DNCPDTI3
✅ Drop-In📋 Reference alternative (not in catalog)
TM4C129EKCPDTI3
✅ Drop-In📋 Reference alternative (not in catalog)
TM4C1294NCPDTI3 Maximum Ratings & Electrical Characteristics
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-bit |
| Maximum Clock Frequency | 120 MHz |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 256 KB |
| Supply Voltage | 3.3 V |
| Ethernet | 10/100 MAC + PHY |
| USB | USB 2.0 Host/Device/OTG |
| ADC Resolution | 12-bit (dual ADCs) |
| Communication Interfaces | UART, I2C, SPI, CAN, Ethernet, USB |
| FPU | Yes (hardware floating point) |
| MPU | Yes (memory protection unit) |
| Operating Temperature | -40C to +85C |
| Package | 128-TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Debug Interface | JTAG / SWD |
| Series | Tiva C Series TM4C129x |
TM4C1294NCPDTI3 128-tqfp (14x14 mm) Pin Configuration Guide
Pin configuration for TM4C1294NCPDTI3 (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 TM4C1294NCPDTI3.
Refer to the datasheet for full pin configuration.
Typical Applications
TM4C1294NCPDTI3 is suitable for 6 applications: Industrial Automation Nodes, IoT Gateways, Building Automation and Smart-Grid Nodes, Networked Control Systems, Motor Control, Test and Measurement Instrumentation.
Industrial Automation Nodes
The TM4C1294NCPDTI3 fits industrial automation controllers where deterministic real-time control meets network connectivity. Its 120 MHz ARM Cortex-M4F with hardware FPU executes PID and motion-control loops without a co-processor, while the integrated 10/100 Ethernet MAC+PHY provides direct field-network attachment, eliminating an external PHY and reducing BOM cost. Multiple UART, I2C, SPI, and CAN channels interface PLC I/O modules, sensors, and drives. The industrial -40C to +85C temperature grade suits factory-floor enclosures. Placed in a 128-TQFP design with proper decoupling, the MCU handles protocol stacks and control tasks concurrently at microsecond-level interrupt latency.
Recommended
IoT Gateways
For IoT gateways, the TM4C1294NCPDTI3 combines wired Ethernet (integrated MAC+PHY), USB 2.0 OTG, and multiple serial interfaces in one 120 MHz chip, aggregating sensor data from CAN, RS-485 (via UART), or SPI peripherals and forwarding it over IP networks. The 1 MB flash accommodates TCP/IP stacks, TLS libraries, and local application logic, while 256 KB SRAM buffers network traffic. TI markets the Tiva C series explicitly for 'highly connected designs.' Compared with a two-chip MCU-plus-PHY solution, integration cuts board area and component count, improving reliability in always-on gateway hardware.
Recommended
Building Automation and Smart-Grid Nodes
Building automation controllers and smart-grid metering nodes benefit from the TM4C1294NCPDTI3's integrated Ethernet for BACnet/IP-style networking, its dual 12-bit ADCs for analog sensor and current-transformer inputs, and CAN for sub-system buses. The -40C to +85C grade survives rooftop and electrical-room environments. The Cortex-M4F's DSP instructions accelerate FFT-based power-quality analysis, and the MPU isolates safety-critical firmware regions. Using a single 3.3 V supply with the internal core regulator simplifies power design in DIN-rail controllers, while 1 MB flash leaves headroom for field firmware updates.
Recommended
Networked Control Systems
In distributed networked control systems, the TM4C1294NCPDTI3 serves as an intelligent node that closes control loops locally at 120 MHz and synchronizes with peers over Ethernet. The hardware FPU and DSP extension run filters and transforms with cycle-accurate determinism, while low interrupt latency supports hard real-time tasks. The JTAG/SWD interface plus TivaWare driver library shortens firmware development. Because the Tiva C series is code-compatible across members, control nodes can be scaled up or down (e.g., to the pin-compatible TM4C1292NCPDTI3 for cost-optimized variants) without rewriting application software.
Recommended
Motor Control
The TM4C1294NCPDTI3 supports motor-control supervisory roles: it runs field-oriented control or commutation logic on the FPU-equipped Cortex-M4F, reads position sensors through quadrature-capable inputs and the dual 12-bit ADCs, and drives power stages via PWM peripherals. Ethernet or CAN connectivity links the drive to plant SCADA systems without extra components. TI pairs the Tiva C family with its C2000 motor-control portfolio in reference architectures: the TM4C handles connectivity, HMI, and supervisory logic while a C2000 DSC executes high-rate current loops. The industrial temperature grade covers drive-enclosure conditions.
Recommended
Test and Measurement Instrumentation
Bench instruments and data-logging products use the TM4C1294NCPDTI3 as the main controller: its 120 MHz core manages the UI, its dual 12-bit ADCs acquire monitor channels, and the USB 2.0 OTG port provides device-mode connectivity to a PC or host-mode attachment of USB storage for logged data. Ethernet enables remote instrument control web servers. The 1 MB flash and 256 KB SRAM hold application, calibration tables, and network stacks simultaneously. Code compatibility across the Tiva C family lets instrument makers reuse firmware across product tiers, and JTAG/SWD plus TivaWare accelerates development cycles.
Recommended
Recommended Products Summary
Engineering reference data for TM4C1294NCPDTI3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TM4C1294NCPDTT3 | TM4C1294NCPDTI | TM4C1292NCPDTI3 | TM4C129EKCPDTI3 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 128-TQFP (14x14 mm) | 128-TQFP - same | 128-TQFP - same | 128-TQFP - same | 128-TQFP - same |
| Core / Frequency | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz |
| Temperature Range | -40C to +85C | wider/higher grade | -40C to +85C | -40C to +85C | -40C to +85C |
| Relative Cost | Baseline | Higher (wider temp grade) | Comparable | Lower (fewer peripherals) | Lower (reduced flash) |
Key Differentiators
- Integrated Ethernet MAC+PHY in TQFP-128 (vs TM4C129EKCPDTI3)
- Industrial temperature grade at lower cost (vs TM4C1294NCPDTT3)
- Full peripheral set for control-rich designs (vs TM4C1292NCPDTI3)
Design Notes
Decouple every VDD and VDDA pin of the 128-TQFP with 0.1 uF low-ESR ceramic capacitors placed within 2 mm of the pin, plus bulk 10 uF capacitance near the supply entry. Keep the analog domain (VDDA) isolated from digital switching currents with a local filter per TI datasheet power-supply guidance. A solid ground plane under the 14x14 mm body is essential for the 120 MHz core and Ethernet PHY signal integrity.
The device operates from a single 3.3 V rail with an internal regulator for the 1.2 V core; follow the datasheet connection requirements for the regulator capacitor pins. Estimated: at 120 MHz with peripherals active, core current is on the order of tens of mA, so a 3.3 V LDO rated 500 mA (e.g., TPS7A-type) provides margin. Use sleep and deep-sleep modes in battery-backed nodes to cut average consumption significantly.
Do not confuse ordering codes: the I3 grade is -40C to +85C only - if the end environment exceeds +85C, order the TM4C1294NCPDTT3 wide-grade variant instead, per TI E2E forum guidance. Also confirm which TM4C129x variant you select early: pin-compatible family members (TM4C1292) trade peripheral channels for cost, and late downgrades require firmware changes to the driver library configuration.
Route the Ethernet MDI pairs (from the integrated PHY to the RJ45 magnetics) as 100-ohm differential pairs with length matching; keep them away from the 25 MHz crystal. Use JTAG/SWD headers with series resistors for reliable programming, and follow TI reference designs (EK-TM4C1294XL class boards) for USB OTG VBUS detection wiring. Crystal load capacitors should match datasheet requirements for the 25 MHz main oscillator.
Compliance Information
Compliance status not stated in the provided web data; consult the TI product page quality section for RoHS/REACH certificates.