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Texas Instruments LM3S301-IGZ20-C2T
- Part No.:
- LM3S301-IGZ20-C2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
LM3S301-IGZ20-C2T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,220
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Product details
Overview
LM3S301-IGZ20-C2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 8 KB Flash, 2 KB SRAM, and integrated analog peripherals including a 10-bit 8-channel ADC, two UARTs, one SSI, one I²C, two 16-bit PWM modules, and an on-chip temperature sensor - designed for real-time motor control and industrial sensing applications.
For engineers reviewing the LM3S301-IGZ20-C2T datasheet, LM3S301-IGZ20-C2T pinout, LM3S301-IGZ20-C2T application, or LM3S301-IGZ20-C2T equivalent, key selection criteria include its 50 MHz operation, QFN-48 package, 2.0–3.6 V supply range, integrated LDO regulator, and support for deterministic interrupt latency in embedded control loops.
Technical Context
The LM3S301-IGZ20-C2T implements the ARM Cortex-M3 core with Thumb-2 instruction set, nested vectored interrupt controller (NVIC), SysTick timer, and memory protection unit (MPU) - enabling deterministic real-time execution and secure peripheral access control. It integrates dedicated motor control peripherals including dual 16-bit PWM generators with dead-band insertion and fault inputs.
Its analog subsystem includes a single 10-bit ADC with four sample sequencers, hardware averaging, and internal temperature sensor - supporting closed-loop feedback without external signal conditioning. Clock management uses an on-chip PLL with programmable dividers and multiple clock sources including internal RC oscillator and external crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max - enables deterministic interrupt response & real-time task scheduling |
| Memory | 8 KB Flash + 2 KB SRAM - sufficient for compact firmware with minimal external memory dependency |
| ADC | 10-bit, 8-channel, 1 MSPS - supports high-speed sampling of motor current/voltage feedback signals |
| PWM | Two 16-bit modules, each with 2 outputs and dead-band generation - suitable for 3-phase inverter gate drive |
| Communication | 2× UART, 1× SSI, 1× I²C - enables serial diagnostics, sensor interfacing, and host communication |
| Supply Range | 2.0 V to 3.6 V - compatible with single Li-ion or regulated 3.3 V systems |
| Package | QFN-48, 7 mm × 7 mm, 0.5 mm pitch - compact footprint for space-constrained industrial PCBs |
Pinout & Package
LM3S301-IGZ20-C2T is housed in a 48-pin QFN package with exposed thermal pad. Pin functions are defined per TI SPMS065I datasheet Section 15 (Pin Diagram) and Section 16 (Signal Tables).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated analog/digital/core rails ensure noise isolation for ADC and timing circuits |
| GND, GNDA | Ground returns | Separate analog/digital ground pins reduce coupling between sensitive and switching domains |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO with alternate functions | Configurable as UART/SSI/I²C/PWM/ADC inputs - enables flexible peripheral mapping |
| OSC0, OSC1 | Crystal oscillator inputs | Supports 1–25 MHz external crystal for precise system clock generation |
| nRST | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable startup under brown-out conditions |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LDO regulator | On-chip 1.25 V core regulator reduces external component count and improves power supply rejection |
| Hardware ADC averaging | Up to 64-sample hardware averaging improves SNR for noisy industrial sensor measurements |
| Dual PWM modules with dead-band | Independent 16-bit timers with programmable dead-time prevent shoot-through in H-bridge drivers |
| Internal temperature sensor | Calibrated ±3°C accuracy over –40°C to +85°C - enables thermal monitoring without external IC |
| NVIC with 32 interrupts | Priority-based nested interrupt handling ensures sub-12-cycle latency for time-critical events |
Applications
| Motor Control System | Industrial Sensor Node |
|---|---|
Use Scenario: Compact BLDC motor controller for HVAC blowers or small pumps. IC Role / Device Role / Timing Role: Real-time PWM generation, current sensing via ADC, and commutation logic execution. Use Value: Integrated dead-band and hardware ADC averaging eliminate need for external gate drivers or signal conditioners. | Use Scenario: Battery-powered environmental monitor with temperature, humidity, and pressure sensing. IC Role / Device Role / Timing Role: Analog front-end acquisition, low-power sleep/wake scheduling, and UART-based data reporting. Use Value: On-chip temperature sensor and 2.0–3.6 V operation enable direct Li-ion battery interface with no level-shifting. |
| Programmable Logic Controller (PLC) I/O Module | Smart Actuator Interface |
Use Scenario: DIN-rail mounted digital I/O expansion module with local decision-making capability. IC Role / Device Role / Timing Role: GPIO state management, watchdog supervision, and RS-485 UART communication. Use Value: Dual UARTs allow simultaneous debug port and fieldbus interface without multiplexing. | Use Scenario: Valve or solenoid driver with position feedback and fault detection. IC Role / Device Role / Timing Role: PWM-controlled actuation, analog feedback processing, and overcurrent/overtemperature shutdown. Use Value: Integrated comparator and fault-input-capable PWM blocks enable autonomous safety responses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Tiva C TM4C123GH6PM | Successor part with 256 KB Flash, 32 KB SRAM, FPU, and enhanced peripherals - same Cortex-M4F core and QFN-64 package | Higher memory and computational headroom for complex control algorithms or protocol stacks | Preferred for new designs requiring extended lifecycle support and TI's ongoing Tiva C software ecosystem |
| STM32F030F4P6 | ARM Cortex-M0, 16 KB Flash, 4 KB SRAM, 48-pin TSSOP - lower cost, no integrated temperature sensor or hardware ADC averaging | Cost-sensitive applications where basic motor sequencing suffices without thermal monitoring | Consider when BOM cost is primary constraint and advanced analog features are not required |
Compared with TM4C123GH6PM and STM32F030F4P6, the LM3S301-IGZ20-C2T offers optimal balance of analog integration, compact footprint, and deterministic real-time performance for legacy-compatible or resource-constrained industrial control nodes - without over-provisioning memory or sacrificing thermal awareness.
Availability
LM3S301-IGZ20-C2T is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, PLC I/O modules, and smart actuator interfaces requiring stable component supply and long-term obsolescence planning.
Supply support for LM3S301-IGZ20-C2T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog, embedded processing, and wireless technologies across industrial, automotive, and consumer markets.
The Stellaris LM3S series was engineered specifically for cost-sensitive, real-time embedded control applications - emphasizing integrated analog peripherals, deterministic interrupt latency, and compact packaging for industrial automation and motor drive systems.
FAQ
What is the maximum operating frequency of the LM3S301-IGZ20-C2T?
The LM3S301-IGZ20-C2T operates at a maximum system clock frequency of 50 MHz, achieved using its on-chip PLL with external crystal or internal oscillator input. This frequency is fully supported across the specified industrial temperature range (–40°C to +85°C) and voltage range (2.0 V to 3.6 V). The LM3S301-IGZ20-C2T maintains consistent timing behavior at this speed due to its tightly coupled Cortex-M3 core and zero-wait-state Flash execution.
Does the LM3S301-IGZ20-C2T include an internal temperature sensor?
Yes, the LM3S301-IGZ20-C2T integrates a factory-calibrated internal temperature sensor accessible via ADC channel 6. Its output is linear over –40°C to +85°C with ±3°C accuracy, eliminating the need for external thermal sensors in many industrial monitoring applications. The LM3S301-IGZ20-C2T allows direct readout through standard ADC conversion sequences without additional hardware.
What communication interfaces does the LM3S301-IGZ20-C2T support?
The LM3S301-IGZ20-C2T supports two UARTs, one SSI (SPI-compatible), and one I²C interface - all mapped to configurable GPIO pins. These interfaces operate independently and can be used concurrently for multi-protocol connectivity. The LM3S301-IGZ20-C2T does not include USB or CAN controllers, distinguishing it from higher-tier Stellaris variants.
Is the LM3S301-IGZ20-C2T pin-compatible with other Stellaris devices?
No, the LM3S301-IGZ20-C2T is not pin-compatible with other Stellaris microcontrollers. Its QFN-48 package and specific peripheral-to-pin mapping differ from larger members like the LM3S811 (LQFP-100) or TM4C123GH6PM (QFN-64). Pin assignments for UART, PWM, and ADC are unique to the LM3S301-IGZ20-C2T and documented in Sections 15–16 of the SPMS065I datasheet.
What is the Flash endurance specification for the LM3S301-IGZ20-C2T?
The LM3S301-IGZ20-C2T Flash memory is rated for a minimum of 10,000 erase/write cycles per sector, with data retention guaranteed for 20 years at 85°C. This endurance is sufficient for field firmware updates and configuration storage in industrial equipment. The LM3S301-IGZ20-C2T supports in-application programming (IAP) via its ROM bootloader, enabling safe over-the-air or local reprogramming without external tools.
LM3S301-IGZ20-C2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- Stellaris® ARM® Cortex®-M3S 300
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 20MHz
- Connectivity:
- Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 33
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 3x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S301-IGZ20-C2T FAQ
1.How can I place an order for LM3S301-IGZ20-C2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S301-IGZ20-C2T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM3S301-IGZ20-C2T reliable?
The price and inventory of LM3S301-IGZ20-C2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S301-IGZ20-C2T is usually 5 days.
3.What payment methods are accepted for LM3S301-IGZ20-C2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S301-IGZ20-C2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S301-IGZ20-C2T?
LM3S301-IGZ20-C2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S301-IGZ20-C2T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM3S301-IGZ20-C2T?
For technical support, including LM3S301-IGZ20-C2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S301-IGZ20-C2T requirements.
6.How does Aetrix verify that LM3S301-IGZ20-C2T is sourced from the original manufacturer or authorized distributors?
All LM3S301-IGZ20-C2T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM3S301-IGZ20-C2T meets industry standards.
7.What is the process for return or replacement of LM3S301-IGZ20-C2T?
All LM3S301-IGZ20-C2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S301-IGZ20-C2T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM3S301-IGZ20-C2T part is unused and in its original packaging.
Return procedure for LM3S301-IGZ20-C2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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