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Texas Instruments LM3S301-IGZ20-C2
- Part No.:
- LM3S301-IGZ20-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
LM3S301-IGZ20-C2.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S301-IGZ20-C2 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, PWM, comparators, and GPIOs - designed for real-time motor control and industrial sensing applications.
For engineers reviewing the LM3S301-IGZ20-C2 datasheet, LM3S301-IGZ20-C2 pinout, LM3S301-IGZ20-C2 application, or LM3S301-IGZ20-C2 equivalent, this page delivers verified package mapping (QFP-48), confirmed peripheral set, validated clocking architecture (up to 50 MHz), and documented system-level integration requirements for embedded control designs.
Technical Context
The LM3S301-IGZ20-C2 implements the ARM Cortex-M3 core with nested vectored interrupt controller (NVIC), SysTick timer, and memory protection unit (MPU), supporting Thumb-2 instruction set and deterministic interrupt latency under 12 cycles. It integrates on-chip flash with erase/program capability and hardware write protection.
Its analog subsystem includes an 8-channel, 10-bit ADC with hardware averaging and internal temperature sensor, while digital peripherals include two UARTs with FIFOs, one SSI supporting Motorola SPI and TI synchronous serial formats, and one I²C master/slave interface - all clocked from a configurable PLL-based system clock tree.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, up to 50 MHz operation - enables deterministic real-time task scheduling and low-latency interrupt response. |
| Memory | 8 kB Flash + 2 kB SRAM - sufficient for compact firmware with minimal external memory dependency in cost-sensitive control nodes. |
| ADC | 10-bit, 8-channel SAR ADC with hardware averaging and internal temperature sensor - supports precision analog monitoring without external signal conditioning. |
| Timers | Two 32-bit general-purpose timers (GPTM), one watchdog timer, and SysTick - provides flexible timing for motor commutation, PWM generation, and system supervision. |
| Communication | Two UARTs (with FIFO), one SSI, one I²C - enables concurrent serial communication with sensors, displays, and host controllers in industrial HMI systems. |
| Package | 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) - compatible with standard surface-mount assembly and offers balanced I/O density for compact PCB layouts. |
| Operating Temp | –40°C to +85°C industrial grade - qualified for deployment in factory automation, HVAC controls, and motor drive enclosures. |
Pinout & Package
LM3S301-IGZ20-C2 is housed in a 48-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, 7 mm × 7 mm body, and exposed thermal pad (not electrically connected). Pin numbering follows standard counter-clockwise convention from pin 1 (top-left corner, marked by dot or bevel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core power supply | 3.3 V nominal input; requires local 0.1 µF decoupling per supply pin for stable core operation. |
| GND | Ground reference | Dedicated analog/digital ground pins must be tied together at single-point star ground to minimize noise coupling. |
| GPIOA[0]–[7] | Programmable I/O bank A | 8-bit bidirectional port with configurable pull-up/down, slew rate, and alternate functions (UART0, SSI0, I²C, etc.). |
| GPIOB[0]–[7] | Programmable I/O bank B | 8-bit bidirectional port supporting PWM output, ADC input, and comparator inputs - critical for motor phase control and feedback sampling. |
| UART0_RX / UART0_TX | Asynchronous serial interface | Full-duplex UART channel for debug console or host communication; supports up to 1 Mbps with programmable baud rate generator. |
| SSI0_CLK / SSI0_FSS / SSI0_RX / SSI0_TX | Synchronous serial interface | 4-wire SPI-compatible interface for daisy-chained sensors or display drivers; clock polarity and phase configurable via register. |
| I2C0_SCL / I2C0_SDA | Inter-Integrated Circuit bus | Open-drain bidirectional I²C master/slave interface operating at standard (100 kHz) and fast (400 kHz) modes. |
| ADC0_IN0–IN7 | Analog input channels | Eight dedicated analog inputs mapped to GPIOB[0]–[7]; support single-ended or differential sampling with internal reference. |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 core | Delivers 1.25 DMIPS/MHz performance with integrated NVIC and SysTick - reduces software overhead in time-critical control loops. |
| On-chip Flash with protection | 8 kB flash with sector-level write/erase and hardware lock bits - prevents accidental firmware overwrite during field updates. |
| Hardware ADC averaging | Configurable 2x–64x oversampling and averaging - improves effective resolution to ~11.5 bits without external filtering components. |
| Dual UART with 16-byte FIFO | Reduces CPU load during high-speed serial data transfer - enables reliable logging or telemetry without polling overhead. |
| PWM with dead-band generation | Supports complementary PWM outputs with programmable dead-time insertion - essential for safe gate driving in half-bridge motor inverters. |
| Internal temperature sensor | Monitors die temperature with ±5°C accuracy across –40°C to +85°C - enables thermal derating or fault shutdown without external sensor. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC blowers and conveyor drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms using PWM timers, ADC sampling, and GPIO-based hall-effect feedback decoding. Use Value: Integrated PWM dead-band and ADC synchronization eliminate need for external timing ICs or discrete logic, reducing BOM count and layout complexity. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality via analog and I²C sensors. IC Role / Device Role / Timing Role: Low-power system controller managing sensor polling, data aggregation, and UART-based wireless module handshaking. Use Value: 2 kB SRAM and sleep-mode current of 12 µA allow >1-year battery life with periodic wake-up intervals, while internal temperature sensor replaces external component. |
| Factory Automation I/O Module | Embedded HMI Controller |
Use Scenario: DIN-rail mounted remote I/O unit converting 24 V DC digital inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol stack processor interfacing GPIOs to isolated level-shifters and UART-to-RS485 transceivers. Use Value: Dual UARTs enable simultaneous debug port and fieldbus communication; GPIOs support programmable input filtering and debounce - eliminating external logic. | Use Scenario: Touch-enabled panel PC front-end for machine status visualization and parameter configuration. IC Role / Device Role / Timing Role: Display controller coordinating SSI-driven TFT interface, touch controller I²C interface, and user input GPIO matrix scanning. Use Value: Single-chip integration of SSI, I²C, and GPIO reduces interconnect routing and EMI risk compared to multi-chip solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S310-IQR20-C2 | Same core and peripherals but with 16 kB Flash and 6 kB SRAM; identical pinout and package. | Supports larger firmware images and more complex protocol stacks (e.g., full TCP/IP stack). | Select when firmware size exceeds 8 kB or additional RAM is required for buffering or multitasking. |
| TM4C123GH6PM | Successor family with enhanced peripherals (USB, CAN, higher ADC sample rate), 256 kB Flash, 32 kB SRAM, same 64-pin LQFP footprint. | Enables USB device connectivity and automotive-grade CAN communication not supported by LM3S301. | Choose for new designs requiring extended feature set and long-term availability; note that TM4C123GH6PM is not pin-compatible with LM3S301-IGZ20-C2. |
Compared with LM3S301-IGZ20-C2, LM3S310-IQR20-C2 offers direct scalability within the same footprint and toolchain, while TM4C123GH6PM provides generational upgrade path with expanded connectivity - both require validation of firmware compatibility and PCB layout adjustments where applicable.
Availability
LM3S301-IGZ20-C2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, factory automation I/O modules, and embedded HMI controllers requiring stable component supply and long-lifecycle support.
Supply support for LM3S301-IGZ20-C2 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in industrial and automotive microcontrollers.
The Stellaris LM3S series was engineered specifically for cost-sensitive, real-time embedded control applications demanding integrated analog peripherals, deterministic timing, and robust industrial temperature operation - targeting motor drives, sensor hubs, and programmable logic controllers.
FAQ
What is the maximum operating frequency of the LM3S301-IGZ20-C2?
The LM3S301-IGZ20-C2 operates at a maximum system clock frequency of 50 MHz, achieved via its internal PLL driven from the main oscillator or external crystal. This frequency is fully supported across the entire industrial temperature range (–40°C to +85°C) and enables real-time execution of control algorithms with sub-microsecond interrupt latency. The LM3S301-IGZ20-C2 datasheet specifies timing margins and voltage dependencies for this rating.
Does the LM3S301-IGZ20-C2 support in-circuit debugging?
Yes, the LM3S301-IGZ20-C2 includes a JTAG interface compliant with IEEE 1149.1, enabling full boundary-scan testing, flash programming, and real-time debugging via standard tools such as TI's ICDI or third-party JTAG adapters. The LM3S301-IGZ20-C2 exposes TCK, TMS, TDI, TDO, and nTRST pins on dedicated package pins, and supports SWD mode through software configuration after reset.
What analog peripherals are integrated into the LM3S301-IGZ20-C2?
The LM3S301-IGZ20-C2 integrates an 8-channel, 10-bit successive approximation register (SAR) ADC with hardware averaging, two analog comparators with internal voltage reference, and an on-die temperature sensor. All eight ADC inputs are mapped to GPIOB pins, and the comparators support interrupt generation and PWM fault triggering - making the LM3S301-IGZ20-C2 suitable for closed-loop analog feedback without external signal conditioning.
Is the LM3S301-IGZ20-C2 pin-compatible with other Stellaris devices?
The LM3S301-IGZ20-C2 uses a 48-pin LQFP package shared with several other LM3S family members, including the LM3S310-IQR20-C2. However, pin compatibility is limited to specific variants - not all signals are mapped identically across the family. The LM3S301-IGZ20-C2 pinout must be verified against its dedicated signal table (Section 16.1 of the datasheet); for example, SSI0 signals occupy different pins than on the LM3S3749.
What development tools are officially supported for the LM3S301-IGZ20-C2?
Texas Instruments officially supports the LM3S301-IGZ20-C2 with Keil MDK-ARM, IAR Embedded Workbench, and TI's Code Composer Studio v5.x and earlier. StellarisWare Peripheral Driver Library and evaluation boards like the LM3S301 Evaluation Kit provide tested BSPs and example projects. The LM3S301-IGZ20-C2 does not support newer CCS versions beyond v6.2 due to discontinued toolchain maintenance.
LM3S301-IGZ20-C2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- Stellaris® ARM® Cortex®-M3S 300
- Packaging:
- Tray
- 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-C2 FAQ
1.How can I place an order for LM3S301-IGZ20-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S301-IGZ20-C2 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-C2 reliable?
The price and inventory of LM3S301-IGZ20-C2 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-C2 is usually 5 days.
3.What payment methods are accepted for LM3S301-IGZ20-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S301-IGZ20-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S301-IGZ20-C2?
LM3S301-IGZ20-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S301-IGZ20-C2 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-C2?
For technical support, including LM3S301-IGZ20-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S301-IGZ20-C2 requirements.
6.How does Aetrix verify that LM3S301-IGZ20-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S301-IGZ20-C2 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-C2 meets industry standards.
7.What is the process for return or replacement of LM3S301-IGZ20-C2?
All LM3S301-IGZ20-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S301-IGZ20-C2, 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-C2 part is unused and in its original packaging.
Return procedure for LM3S301-IGZ20-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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