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Texas Instruments LM3S300-IGZ25-C2
- Part No.:
- LM3S300-IGZ25-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
LM3S300-IGZ25-C2.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,324
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Product details
Overview
LM3S300-IGZ25-C2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 25 MHz maximum CPU frequency, 32 KB flash memory, 8 KB SRAM, and integrated peripherals including UART, I²C, SSI, GPIO, timers, and analog comparators. It targets embedded control in industrial automation, motor control, and sensor interface applications.
For engineers reviewing the LM3S300-IGZ25-C2 datasheet, LM3S300-IGZ25-C2 pinout, LM3S300-IGZ25-C2 application, or LM3S300-IGZ25-C2 equivalent, key selection considerations include its 25 MHz operation limit, QFP-48 package, Cortex-M3 core with NVIC and SysTick, flash/SRAM memory sizing, and peripheral set coverage for real-time deterministic control.
Technical Context
The LM3S300-IGZ25-C2 implements the ARMv7-M architecture with Thumb-2 instruction set, supporting both privileged and unprivileged execution modes, nested vectored interrupts (NVIC), and system-level debug via JTAG. Its memory map includes bit-band aliasing for atomic peripheral register access and configurable memory protection unit (MPU) regions.
Peripherals are clock-gated and controlled through the system control block (SCB), with programmable reset sources, power management for sleep/wake states, and synchronous serial interfaces compliant with SPI and I²C standards. The device uses on-chip LDO regulation and supports external crystal or internal oscillator clock sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, no floating-point unit |
| Max Clock Frequency | 25 MHz - defines real-time interrupt latency ceiling and peripheral timing margins |
| Flash Memory | 32 KB - stores firmware with sector erase and page programming capability |
| SRAM | 8 KB - provides runtime stack, heap, and data buffers for deterministic execution |
| Package | 48-pin LQFP (7 mm × 7 mm) - surface-mount compatible with standard PCB reflow profiles |
| Operating Voltage | 3.3 V ±5% - requires stable single-supply rail; internal LDO regulates core voltage |
| Temperature Range | –40°C to +85°C - qualified for industrial ambient environments |
Pinout & Package
LM3S300-IGZ25-C2 is housed in a 48-pin Low-Profile Quad Flat Package (LQFP) with 0.5 mm pitch, thermal pad exposed on underside for enhanced heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core Power Supply | 3.3 V input to internal LDO; must be decoupled with 0.1 µF ceramic capacitor near pin |
| GND | Ground Reference | Common return path for all analog/digital circuits; connects to thermal pad |
| XTAL | Crystal Oscillator Input | Accepts 1–25 MHz parallel-resonant crystal; enables precise clock source for UART/SSI timing |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU state and initializes peripherals to known defaults |
| PA0–PA7 | General-Purpose I/O | Configurable as digital inputs/outputs or alternate functions (UART0, SSI0, I²C0) |
| PD0–PD7 | General-Purpose I/O | Supports edge-triggered interrupts and slew-rate control for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| NVIC with 32 interrupt lines | Enables prioritized, low-latency response to up to 32 asynchronous events without software polling |
| Integrated analog comparators | Two independent comparators with selectable reference sources for threshold detection and zero-crossing sensing |
| Bit-band alias region | Allows atomic read-modify-write of individual peripheral bits without disabling interrupts or using critical sections |
| Programmable GPIO slew rate | Reduces EMI by limiting output transition speed on high-frequency digital signals |
| Flash write protection | Hardware-enforced lock bits prevent accidental overwrite of bootloader or calibration data sectors |
Applications
| Industrial Motor Control | Sensor Data Acquisition |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using PWM outputs and current feedback via analog comparators. IC Role / Device Role / Timing Role: Real-time execution host managing commutation timing, fault detection, and communication with HMI. Use Value: Deterministic 25 MHz interrupt latency ensures precise phase alignment and overcurrent shutdown within 1 µs. | Use Scenario: Multi-sensor node collecting temperature, pressure, and proximity data for local preprocessing. IC Role / Device Role / Timing Role: Sensor interface hub with I²C master, UART telemetry, and comparator-based wake-on-event. Use Value: Integrated comparators eliminate external components; 8 KB SRAM buffers burst reads before transmission. |
| Embedded HMI Controller | Power Supply Monitoring |
Use Scenario: Keypad-driven display controller for HVAC or lighting panels with local logic and status reporting. IC Role / Device Role / Timing Role: User interface processor handling button scan, LED/PWM dimming, and serial command parsing. Use Value: GPIO flexibility supports matrix keypad scanning and direct LED drive; UART enables remote diagnostics. | Use Scenario: Monitoring rail voltages and temperatures in DC-DC converters or battery packs. IC Role / Device Role / Timing Role: Analog monitoring agent triggering alerts or shutdown when thresholds are exceeded. Use Value: Dual comparators with internal reference allow simultaneous under-voltage and over-temperature detection without ADC overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S101-IQC25-A2 | Lower memory (8 KB flash, 2 KB SRAM); same Cortex-M3 core and peripheral set but reduced I/O count | Suitable for cost-sensitive, minimal-feature control tasks where full 32 KB flash is unnecessary | Select when BOM cost reduction outweighs firmware scalability needs |
| TM4C123GH6PM | Higher performance (80 MHz), larger memory (256 KB flash, 32 KB SRAM), added USB and CAN support | Required for applications needing USB device connectivity or automotive-grade CAN bus integration | Choose when future feature expansion or protocol compliance mandates upgrade path |
Compared with LM3S300-IGZ25-C2, LM3S101-IQC25-A2 offers lower memory and I/O at reduced cost for simpler control, while TM4C123GH6PM delivers higher throughput and expanded interface options-making it suitable for next-generation designs requiring USB or CAN, but with increased complexity and footprint.
Availability
LM3S300-IGZ25-C2 is available at Aetrix Electronics and suitable for industrial motor control, sensor interface modules, and embedded HMI systems requiring stable component supply across extended production lifecycles.
Supply support for LM3S300-IGZ25-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and wireless technologies with over 90 years of innovation in industrial and automotive electronics.
The Stellaris LM3S series was designed as TI's first generation of ARM Cortex-M3 microcontrollers targeting deterministic real-time control in resource-constrained industrial and automation systems.
FAQ
What is the maximum operating frequency of the LM3S300-IGZ25-C2?
The LM3S300-IGZ25-C2 operates at a maximum CPU frequency of 25 MHz, as specified in its electrical characteristics table. This limit applies across the full industrial temperature range (–40°C to +85°C) and 3.3 V supply. The device does not support overclocking, and system clocks derived from PLL or oscillator sources must remain within this bound to ensure timing compliance and functional reliability of the LM3S300-IGZ25-C2.
Does the LM3S300-IGZ25-C2 include an integrated ADC?
No, the LM3S300-IGZ25-C2 does not include an analog-to-digital converter. It features two analog comparators with programmable reference inputs, but no successive-approximation or sigma-delta ADC circuitry. Signal digitization requires external ADC components or use of comparator-based threshold detection. This design choice reflects the LM3S300-IGZ25-C2's focus on fast deterministic control rather than high-resolution analog acquisition.
Is the LM3S300-IGZ25-C2 pin-compatible with other Stellaris devices?
The LM3S300-IGZ25-C2 uses a 48-pin LQFP package shared with several other LM3S family members, but pin compatibility is not guaranteed across variants. Pin functions vary significantly between models due to differing peripheral enablement and multiplexing schemes. For example, UART1 signals appear on different pins in LM3S101 versus LM3S300. Always verify signal mapping against the specific LM3S300-IGZ25-C2 pin diagram-not generic Stellaris documentation-before board reuse.
What debug interface does the LM3S300-IGZ25-C2 support?
The LM3S300-IGZ25-C2 supports IEEE 1149.1 JTAG debugging via dedicated TCK, TMS, TDI, TDO, and TRST pins. It includes full CoreSight-compliant debug infrastructure: hardware breakpoints, watchpoints, and real-time memory access during halt mode. SWD (Serial Wire Debug) is not supported-the LM3S300-IGZ25-C2 predates TI's adoption of SWD in later TM4C devices. Debug toolchains must use JTAG adapters compatible with ARM CoreSight v1.0.
Can the LM3S300-IGZ25-C2 operate from a 5 V supply?
No, the LM3S300-IGZ25-C2 requires a nominal 3.3 V ±5% supply and is not 5 V tolerant. Its I/O pins are rated for 3.3 V operation only, and applying 5 V to any pin-including VDD or GPIO-exceeds absolute maximum ratings and may cause permanent damage. External level-shifting circuitry is required when interfacing with 5 V peripherals. The internal LDO regulator accepts only 3.3 V input and does not support higher input voltages.
LM3S300-IGZ25-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:
- 25MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S300-IGZ25-C2 FAQ
1.How can I place an order for LM3S300-IGZ25-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S300-IGZ25-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 LM3S300-IGZ25-C2 reliable?
The price and inventory of LM3S300-IGZ25-C2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S300-IGZ25-C2 is usually 5 days.
3.What payment methods are accepted for LM3S300-IGZ25-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S300-IGZ25-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S300-IGZ25-C2?
LM3S300-IGZ25-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S300-IGZ25-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 LM3S300-IGZ25-C2?
For technical support, including LM3S300-IGZ25-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S300-IGZ25-C2 requirements.
6.How does Aetrix verify that LM3S300-IGZ25-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S300-IGZ25-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 LM3S300-IGZ25-C2 meets industry standards.
7.What is the process for return or replacement of LM3S300-IGZ25-C2?
All LM3S300-IGZ25-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S300-IGZ25-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 LM3S300-IGZ25-C2 part is unused and in its original packaging.
Return procedure for LM3S300-IGZ25-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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