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Texas Instruments LM3S6100-IQC25-A2T
- Part No.:
- LM3S6100-IQC25-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S6100-IQC25-A2T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,367
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Product details
Overview
LM3S6100-IQC25-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated Ethernet MAC, dual UARTs, SSI, GPIO, and analog comparator-designed for industrial networked control systems requiring real-time deterministic response and wired connectivity.
For engineers reviewing the LM3S6100-IQC25-A2T datasheet, LM3S6100-IQC25-A2T pinout, LM3S6100-IQC25-A2T application, or LM3S6100-IQC25-A2T equivalent, key selection considerations include its 100-pin LQFP package, -40°C to +85°C industrial temperature grade, 25 MHz maximum system clock, Ethernet PHY interface support, and lack of on-chip USB or CAN peripherals.
Technical Context
The LM3S6100-IQC25-A2T implements the ARMv7-M architecture with nested vectored interrupt controller (NVIC), SysTick timer, and memory protection unit (MPU), enabling deterministic real-time execution. It integrates a full Ethernet MAC with MII interface but requires an external PHY for physical layer connectivity.
Its peripheral set includes two UARTs supporting IrDA and SIR modes, one SSI port compatible with SPI/SSI/Microwire protocols, eight GPIO ports with programmable slew rate and drive strength, and a single analog comparator with internal reference voltage selection-targeting embedded control nodes where local sensing and wired network integration are co-located.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, 25 MHz max operation |
| Flash Memory | 256 KB on-chip, used for firmware storage and execute-in-place (XIP) capability |
| SRAM | 64 KB on-chip, supports data buffering, stack, and heap allocation for real-time tasks |
| Ethernet Interface | MAC-only with MII interface; requires external PHY (e.g., DP83848) for 10/100BASE-TX |
| UARTs | Two independent UARTs, each supporting hardware flow control, FIFO, and IrDA/SIR modes |
| SSI Port | One synchronous serial interface, configurable as SPI master/slave or Microwire-compatible |
| Operating Temp | -40°C to +85°C industrial grade, validated for extended thermal cycling in factory environments |
| Package | 100-pin LQFP (14 mm × 14 mm), lead-free and RoHS-compliant |
Pinout & Package
LM3S6100-IQC25-A2T is housed in a 100-pin LQFP package (JEDEC MO-140, 0.5 mm pitch). Pin assignments are defined per TI SPMS107I datasheet Section 14 (Pin Diagram) and Section 15.1 (100-Pin LQFP Signal Tables).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital core (VDD), analog (VDDA), and internal regulator (VDDC) rails-require separate decoupling per datasheet layout guidelines |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | GPIO port pins | Configurable digital I/O with alternate functions including UART0/1, SSI0, and Ethernet MII signals |
| RMII_TXD0, RMII_TXD1, RMII_TXEN, RMII_RXD0, RMII_RXD1, RMII_CRS_DV, RMII_REF_CLK | Ethernet MII/RMII interface | Supports both full MII and reduced RMII modes; RMII mode reduces pin count by 9 vs. MII |
| U0RX, U0TX, U1RX, U1TX | UART serial I/O | Dedicated TTL-level transmit/receive lines for UART0 and UART1; no built-in level shifters |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | Synchronous serial interface | Four-wire full-duplex SSI port compatible with SPI slave select, clock, MISO, MOSI |
| COMP0+, COMP0−, COMP0OUT | Analog comparator inputs/output | Differential input pair with internal 1.25 V reference option; open-drain output drives external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Ethernet MAC | Enables direct connection to external PHY without external glue logic-reduces BOM count and PCB area for industrial Ethernet nodes |
| Dual UART with IrDA/SIR | Supports legacy serial diagnostics and infrared remote control via same hardware, minimizing peripheral duplication |
| Programmable GPIO slew rate | Reduces EMI during high-speed toggling and allows optimization for noise-sensitive analog sections on shared PCB |
| On-chip LDO regulator | Generates internal 1.2 V core voltage from 3.3 V supply-eliminates need for external core regulator in cost-sensitive designs |
| Memory Protection Unit (MPU) | Enforces privilege-based access control across flash, SRAM, and peripheral regions-supports safe partitioning in multi-task RTOS environments |
Applications
| Industrial Ethernet Gateway | Factory Floor Controller |
|---|---|
Use Scenario: Aggregating Modbus RTU sensor data over RS-485 and forwarding to EtherNet/IP network. IC Role / Device Role / Timing Role: Central protocol translation engine with real-time UART-to-Ethernet bridging and deterministic packet scheduling. Use Value: 25 MHz Cortex-M3 delivers sufficient headroom for dual-protocol stack execution while maintaining sub-100 µs interrupt latency for time-critical fieldbus responses. | Use Scenario: Local motion control node managing stepper motor sequencing and limit switch monitoring in packaging machinery. IC Role / Device Role / Timing Role: Real-time I/O coordinator with GPIO-driven step/direction outputs and edge-triggered interrupt handling for safety interlocks. Use Value: Eight GPIO ports with configurable slew rate and 64 KB SRAM enable robust state-machine execution and buffered command queuing without external memory. |
| Building Automation Panel | Networked Power Meter |
Use Scenario: Wall-mounted HVAC controller communicating with BACnet MS/TP field devices and reporting to BACnet/IP backbone. IC Role / Device Role / Timing Role: Protocol-aware network endpoint with UART-based MS/TP physical layer and Ethernet MAC for IP tunneling. Use Value: Dual UARTs allow simultaneous MS/TP master/slave operation while Ethernet MAC handles BACnet/IP frame assembly and checksum offload. | Use Scenario: DIN-rail mounted electricity meter transmitting kWh data via Ethernet to SCADA server. IC Role / Device Role / Timing Role: Data concentrator with analog comparator for zero-crossing detection and Ethernet MAC for TCP/IP session management. Use Value: On-chip comparator replaces external op-amp circuit for AC line synchronization, reducing component count and calibration drift over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-IQC50-A2T | Higher clock speed (50 MHz), adds USB 2.0 OTG controller and additional UART/SSI channels | Required for USB host/device connectivity or higher throughput serial bridging | Select when USB interface or >25 MHz CPU performance is mandatory; not pin-compatible due to different pinout and power requirements |
| TM4C123GH6PM | Newer generation with FPU, enhanced PWM, USB, and updated peripheral set; 100-pin LQFP package | Supports floating-point math, motor control PWM, and USB HID/CDC classes | Choose for new designs needing FPU, longer product lifecycle, or USB device functionality; migration requires firmware and layout changes |
Compared with LM3S6100-IQC25-A2T, LM3S6965-IQC50-A2T offers higher performance but lacks long-term availability assurance, while TM4C123GH6PM provides modern feature set and active support-but both require hardware redesign and software requalification.
Availability
LM3S6100-IQC25-A2T is available at Aetrix Electronics and suitable for industrial Ethernet gateways, factory floor controllers, and building automation panels requiring stable component supply and long-lifecycle support for legacy design maintenance.
Supply support for LM3S6100-IQC25-A2T 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 broad industrial and automotive design expertise.
The Stellaris LM3S series was TI's first ARM Cortex-M3-based MCU family, engineered specifically for deterministic real-time control in resource-constrained industrial networking applications-prioritizing Ethernet integration, low-latency interrupt response, and robust peripheral configurability.
FAQ
Does LM3S6100-IQC25-A2T include an integrated Ethernet PHY?
No, LM3S6100-IQC25-A2T contains only an Ethernet MAC with MII/RMII interface. An external PHY such as the DP83848C or LAN8720A must be used to implement the physical layer for 10/100BASE-TX. The LM3S6100-IQC25-A2T provides all MAC-layer registers, DMA control, and frame filtering logic, but does not drive twisted-pair signals directly.
What is the maximum operating frequency of LM3S6100-IQC25-A2T?
The LM3S6100-IQC25-A2T is rated for a maximum system clock frequency of 25 MHz. This is specified in the "Recommended DC Operating Conditions" table (Section 17.1.2) of the SPMS107I datasheet. It does not support PLL-based clock multiplication beyond this frequency, and operation above 25 MHz violates production specifications.
Is LM3S6100-IQC25-A2T pin-compatible with other LM3S6xxx variants?
No, LM3S6100-IQC25-A2T is not pin-compatible with other LM3S6xxx parts such as LM3S6965 or LM3S6172. While all share the 100-pin LQFP package, signal assignments differ significantly-especially for Ethernet, SSI, and clock routing. The LM3S6100-IQC25-A2T uses a unique pin mapping optimized for its specific peripheral subset and cannot serve as a drop-in replacement.
Does LM3S6100-IQC25-A2T support USB connectivity?
No, LM3S6100-IQC25-A2T does not include USB hardware. It lacks USB transceivers, PHY, or controller logic. For USB-enabled designs, TI recommends migrating to the TM4C123 or LM3S6965 families, which integrate USB 2.0 OTG controllers. The LM3S6100-IQC25-A2T relies solely on UART, SSI, and Ethernet for communication interfaces.
What debug interface does LM3S6100-IQC25-A2T use?
LM3S6100-IQC25-A2T uses a standard 4-wire JTAG interface compliant with IEEE 1149.1, accessible via TCK, TMS, TDI, TDO, and nTRST pins. It supports full boundary-scan testing and integrated debug via ARM CoreSight components, including SWD compatibility through dedicated debug port pins as documented in Section 4 of the SPMS107I datasheet.
LM3S6100-IQC25-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 6000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 25MHz
- Connectivity:
- Ethernet, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S6100-IQC25-A2T FAQ
1.How can I place an order for LM3S6100-IQC25-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S6100-IQC25-A2T 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 LM3S6100-IQC25-A2T reliable?
The price and inventory of LM3S6100-IQC25-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S6100-IQC25-A2T is usually 5 days.
3.What payment methods are accepted for LM3S6100-IQC25-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S6100-IQC25-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S6100-IQC25-A2T?
LM3S6100-IQC25-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S6100-IQC25-A2T 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 LM3S6100-IQC25-A2T?
For technical support, including LM3S6100-IQC25-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S6100-IQC25-A2T requirements.
6.How does Aetrix verify that LM3S6100-IQC25-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S6100-IQC25-A2T 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 LM3S6100-IQC25-A2T meets industry standards.
7.What is the process for return or replacement of LM3S6100-IQC25-A2T?
All LM3S6100-IQC25-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S6100-IQC25-A2T, 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 LM3S6100-IQC25-A2T part is unused and in its original packaging.
Return procedure for LM3S6100-IQC25-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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