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Texas Instruments LM3S600-EQN50-C2T
- Part No.:
- LM3S600-EQN50-C2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S600-EQN50-C2T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,486
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Product details
Overview
LM3S600-EQN50-C2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, and integrated peripherals including UART, I²C, SSI, PWM timers, analog comparators, and GPIOs; operates at up to 50 MHz and targets real-time industrial control and motor drive applications.
For engineers reviewing the LM3S600-EQN50-C2T datasheet, LM3S600-EQN50-C2T pinout, LM3S600-EQN50-C2T application, or LM3S600-EQN50-C2T equivalent, key selection criteria include its 50 MHz CPU clock, QFP-50 package, 256 KB on-chip flash with write protection, NVIC-based interrupt handling, and support for deterministic real-time execution in resource-constrained embedded systems.
Technical Context
The LM3S600-EQN50-C2T implements the ARMv7-M architecture with Thumb-2 instruction set, delivering deterministic interrupt latency down to 12 cycles via its Nested Vectored Interrupt Controller (NVIC). It integrates a system timer (SysTick), memory protection unit (MPU), and debug interface compliant with ARM CoreSight standards.
Peripherals are memory-mapped and accessible via APB bus; clock gating is managed per-module through the system control block. The device supports multiple low-power sleep modes (sleep/deep-sleep) with wake-up sources including GPIO, UART, and timer interrupts - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, no cache, Harvard bus architecture |
| Max Clock Speed | 50 MHz - enables real-time loop execution ≤20 ns per cycle for motor control timing |
| Flash Memory | 256 KB - supports firmware storage, in-application programming (IAP), and sector-level write protection |
| SRAM | 32 KB - sufficient for stack/heap allocation and peripheral buffer storage in standalone operation |
| Package | QFP-50 (EQN50), 7 × 7 mm body, 0.4 mm pitch - compatible with standard PCB reflow and automated optical inspection |
| Operating Voltage | 2.25 V to 3.63 V - allows direct connection to single Li-ion or 3.3 V regulated supplies without level-shifting |
| Temperature Range | –40°C to +85°C - qualified for industrial ambient environments without derating |
Pinout & Package
LM3S600-EQN50-C2T is housed in a 50-pin LQFP (Low-Profile Quad Flat Package) with exposed thermal pad, designated EQN50 by Texas Instruments. Pin functions are multiplexed across GPIO banks A–E and dedicated peripheral signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Primary 2.25–3.63 V input; requires local 100 nF decoupling per power domain |
| GND | Ground reference | Dedicated analog/digital ground pins reduce noise coupling between signal domains |
| GPIOA[0] | General-purpose I/O | Configurable as UART0 Rx, SSI0 Rx, or I²C0 SDA - supports slew-rate control and weak pull-up |
| GPIOB[4] | PWM output | Channel 0 of PWM generator 0 - supports center-aligned and edge-aligned modes for motor phase control |
| SSI0CLK | Synchronous serial clock | Master or slave clock output/input; supports up to 25 MHz operation at full speed |
| I2C0SCL | I²C clock line | Open-drain output with internal weak pull-up; supports standard (100 kbps) and fast (400 kbps) modes |
| USB0VBUS | USB VBUS detection | Input-only monitoring pin for USB host presence - no internal regulator or transceiver |
| NMI | Non-maskable interrupt | Edge-triggered input for critical fault signaling (e.g., overtemperature, watchdog timeout) |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 core with NVIC | 12-cycle interrupt latency and 8-level priority grouping enable hard real-time response in motor control loops |
| Integrated analog comparators | Two independent comparators with selectable internal voltage reference (1.65 V or 2.5 V) for overcurrent sensing |
| Multiple communication interfaces | 2× UART, 2× SSI, 1× I²C - allow concurrent serial communication with sensors, displays, and host controllers |
| Programmable GPIO with alternate functions | All 43 GPIOs support peripheral remapping via register-controlled function select - simplifies board layout reuse |
| On-chip flash with protection bits | 256 KB flash includes sector lock bits and write-protection registers - prevents accidental firmware overwrite during field updates |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution engine managing commutation timing, current limiting, and fault shutdown within 10 µs deadlines. Use Value: Deterministic NVIC interrupt handling and 50 MHz clock ensure precise phase alignment and torque ripple reduction. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and CO₂ data for wireless transmission. IC Role / Device Role / Timing Role: Low-power system controller coordinating ADC sampling, I²C sensor reads, and UART/SSI data forwarding. Use Value: Deep-sleep mode with GPIO wake-up and 32 KB SRAM retention extends battery life beyond 2 years on coin cell. |
| PLC I/O Module | Medical Diagnostic Instrument |
Use Scenario: DIN-rail mounted digital I/O expansion module interfacing with 24 V industrial sensors and actuators. IC Role / Device Role / Timing Role: Isolated signal conditioner and protocol translator between field-side inputs and EtherCAT/Modbus RTU backplane. Use Value: GPIO pad control registers enable programmable drive strength and slew rate - matching legacy 24 V logic levels without external buffers. | Use Scenario: Portable ECG front-end with analog lead-off detection and real-time waveform buffering before Bluetooth transmission. IC Role / Device Role / Timing Role: Signal acquisition coordinator managing analog comparator thresholds, timer-triggered ADC conversions, and FIFO-based data streaming. Use Value: Integrated analog comparators with internal reference eliminate need for external precision voltage references - reducing BOM count and calibration complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S610-EQN50-C2T | Same package and core, but with 512 KB flash and identical peripherals - no change in pinout or clock specs | Supports larger firmware images and bootloader+application dual-bank updates | Select when firmware size exceeds 256 KB or secure OTA update capability is required |
| TM4C123GH6PM | Successor family with same Cortex-M4F core, 80 MHz max clock, FPU, and enhanced peripheral set (USB, CAN, Ethernet MAC) | Enables floating-point math for sensor fusion and higher-speed communication protocols | Choose for new designs requiring extended lifecycle, active TI support, or advanced connectivity |
Compared with LM3S600-EQN50-C2T, LM3S610-EQN50-C2T offers double flash capacity without hardware changes, while TM4C123GH6PM provides architectural upgrades (FPU, USB, CAN) but requires PCB redesign and software migration - making LM3S600-EQN50-C2T optimal for cost-sensitive, mature industrial control deployments.
Availability
LM3S600-EQN50-C2T is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and portable medical instrumentation requiring stable component supply and long-term obsolescence management.
Supply support for LM3S600-EQN50-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, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as TI's first ARM-based microcontroller portfolio targeting deterministic real-time performance in cost-sensitive industrial automation and motor control applications - emphasizing low-latency interrupt response and integrated analog/motor peripherals.
FAQ
What is the maximum operating frequency of the LM3S600-EQN50-C2T?
The LM3S600-EQN50-C2T operates at a maximum system clock frequency of 50 MHz. This speed is achieved using an internal PLL driven from the main oscillator or an external crystal, and it defines the upper limit for instruction execution, peripheral timing, and real-time loop performance. All timing specifications in the datasheet - including UART baud rates, SSI bit rates, and GPIO toggle speeds - are validated at this 50 MHz condition. The LM3S600-EQN50-C2T does not support overclocking beyond this rated frequency.
Does the LM3S600-EQN50-C2T include a hardware floating-point unit (FPU)?
No, the LM3S600-EQN50-C2T does not include a hardware floating-point unit. It implements the ARM Cortex-M3 core, which supports only integer and fixed-point arithmetic in hardware. Floating-point operations must be performed in software using the standard C library or CMSIS-DSP routines. For applications requiring native floating-point math, TI recommends the TM4C123GH6PM - a Cortex-M4F successor that integrates a single-precision FPU and maintains software compatibility where possible. The LM3S600-EQN50-C2T remains appropriate for integer-based control algorithms.
What package type and pin count does the LM3S600-EQN50-C2T use?
The LM3S600-EQN50-C2T uses a 50-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch and a 7 mm × 7 mm body size, designated EQN50 by Texas Instruments. This package includes an exposed thermal pad on the underside for improved heat dissipation and mechanical stability. Pin assignments are fully documented in Section 14 (Pin Diagram) and Section 15 (Signal Tables) of the official LM3S600 datasheet. The LM3S600-EQN50-C2T is not offered in BGA or QFN variants.
Can the LM3S600-EQN50-C2T support USB device functionality?
No, the LM3S600-EQN50-C2T does not support USB device or host functionality. While it includes a USB0VBUS pin for detecting host VBUS presence, it lacks a USB transceiver, PHY layer, and USB controller logic. Communication is limited to UART, I²C, and SSI interfaces. For USB-capable designs, TI's TM4C123x or TM4C129x families provide integrated USB 2.0 OTG controllers and full physical layer support. The LM3S600-EQN50-C2T is intended for non-USB embedded control where serial or synchronous interfaces suffice.
Is the LM3S600-EQN50-C2T still in active production and supported by Texas Instruments?
The LM3S600-EQN50-C2T is discontinued by Texas Instruments and no longer in active production. TI announced end-of-life for the entire Stellaris LM3S series in favor of the TM4C product line. However, Aetrix Electronics maintains inventory of original-traceable LM3S600-EQN50-C2T units for legacy system repair and long-lifecycle industrial programs. Full documentation, design files, and StellarisWare software remain publicly available on ti.com for continued development and maintenance of existing LM3S600-EQN50-C2T-based systems.
LM3S600-EQN50-C2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 600
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S600-EQN50-C2T FAQ
1.How can I place an order for LM3S600-EQN50-C2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S600-EQN50-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 LM3S600-EQN50-C2T reliable?
The price and inventory of LM3S600-EQN50-C2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S600-EQN50-C2T is usually 5 days.
3.What payment methods are accepted for LM3S600-EQN50-C2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S600-EQN50-C2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S600-EQN50-C2T?
LM3S600-EQN50-C2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S600-EQN50-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 LM3S600-EQN50-C2T?
For technical support, including LM3S600-EQN50-C2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S600-EQN50-C2T requirements.
6.How does Aetrix verify that LM3S600-EQN50-C2T is sourced from the original manufacturer or authorized distributors?
All LM3S600-EQN50-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 LM3S600-EQN50-C2T meets industry standards.
7.What is the process for return or replacement of LM3S600-EQN50-C2T?
All LM3S600-EQN50-C2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S600-EQN50-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 LM3S600-EQN50-C2T part is unused and in its original packaging.
Return procedure for LM3S600-EQN50-C2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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