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Texas Instruments LM3S612-EQN50-C2T
- Part No.:
- LM3S612-EQN50-C2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S612-EQN50-C2T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,538
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Product details
Overview
LM3S612-EQN50-C2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated ADC (10-bit, 8-channel), dual UARTs, I²C, SSI, PWM, and analog comparator - designed for real-time motor control and industrial sensing applications.
For engineers reviewing the LM3S612-EQN50-C2T datasheet, LM3S612-EQN50-C2T pinout, LM3S612-EQN50-C2T application, or LM3S612-EQN50-C2T equivalent, key selection criteria include its 50 MHz operation, QFP-100 package, integrated motor control peripherals (PWM with dead-band generation), and support for deterministic real-time execution via NVIC and SysTick.
Technical Context
The LM3S612-EQN50-C2T implements the ARM Cortex-M3 core with Thumb-2 instruction set, nested vectored interrupt controller (NVIC), and memory protection unit (MPU). It supports three low-power sleep modes and features bit-band aliasing for atomic peripheral register access.
Its system-level integration includes a programmable clock tree with PLL-based 50 MHz main oscillator, internal precision RC oscillator (400 kHz), and multiple gated clock domains for GPIO, UART, SSI, I²C, PWM, ADC, and timers - enabling selective peripheral power gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, 50 MHz max operation |
| Memory | 256 KB on-chip flash (with 128-bit wide interface), 32 KB SRAM |
| ADC | 10-bit SAR ADC with 8 input channels, hardware averaging, internal temperature sensor |
| Timers | Two 32-bit general-purpose timers (GPTM), one watchdog timer, SysTick timer |
| Communication | Dual UARTs (with FIFO), I²C master/slave, SSI (SPI-compatible), CAN not supported |
| PWM | 6-channel PWM generator with dead-band insertion, fault inputs, and ADC trigger synchronization |
| Package | 100-pin LQFP (EQN), 14 × 14 mm body, 0.5 mm pitch, RoHS-compliant |
Pinout & Package
LM3S612-EQN50-C2T is housed in a 100-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad, designated EQN by Texas Instruments. Pin numbering follows standard counter-clockwise convention starting from top-left corner (Pin 1 marked).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails enable noise isolation for ADC and CPU |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling into sensitive circuits |
| GPIO_A[7:0] | General-purpose I/O bank | 8-bit port with configurable pull-up/down, slew rate, and alternate functions including UART0/SSI0/I²C0 |
| PH0–PH7 | High-drive GPIO bank | 8-bit port supporting up to 8 mA drive strength per pin; used for PWM outputs and motor gate drivers |
| ADC0_IN0–ADC0_IN7 | Analog input channels | Direct connection to 8-channel ADC multiplexer; supports single-ended and differential sampling |
| SSI0_CLK/SSI0_FSS/SSI0_RX/SSI0_TX | SSI peripheral signals | Full-duplex synchronous serial interface compatible with SPI, Microwire, and TI synchronous serial protocols |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Control PWM | 6-channel PWM with programmable dead-band, fault shutdown, and ADC-triggered capture for precise timing in BLDC/PMSM drives |
| Deterministic Interrupt Latency | NVIC with 8 priority levels and tail-chaining ensures sub-12-cycle interrupt response for real-time control loops |
| Hardware-Accelerated Bit-Banding | Atomic read-modify-write access to individual peripheral bits without software locking or critical sections |
| On-Chip Temperature Sensor | Calibrated internal sensor enables system thermal monitoring without external components |
| Configurable Clock Gating | Per-peripheral clock enable/disable reduces dynamic power consumption during idle periods |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of brushless DC motors in HVAC blowers and pump systems. IC Role / Device Role / Timing Role: Real-time execution host for FOC algorithms, PWM waveform generation, and current/voltage feedback sampling. Use Value: Integrated 6-channel PWM with dead-band and ADC synchronization eliminates need for external timing ICs and reduces BOM count. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and pressure data. IC Role / Device Role / Timing Role: System controller managing sensor interfaces (I²C/UART), data logging, and low-power wake-up scheduling. Use Value: Multiple low-power sleep modes and internal RC oscillator allow µA-level standby current while maintaining accurate wake timing. |
| Programmable Logic Controller (PLC) I/O Module | Industrial HMI Controller |
Use Scenario: DIN-rail mounted I/O expansion module with digital input conditioning and relay output driving. IC Role / Device Role / Timing Role: Interface processor handling opto-isolated inputs, PWM-controlled LED indicators, and RS-485 communication. Use Value: Dual UARTs with FIFO and hardware flow control support robust Modbus RTU communication over noisy factory floors. | Use Scenario: Touch-enabled local operator panel for machine status display and parameter adjustment. IC Role / Device Role / Timing Role: Graphics-capable controller interfacing with resistive touch screen and driving monochrome LCD via parallel GPIO. Use Value: 32 KB SRAM and fast GPIO toggling enable efficient frame buffering and responsive UI updates without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-EQN50-C2T | Same package and core, but adds Ethernet MAC and USB device controller; flash increased to 256 KB, SRAM to 64 KB | Suitable for networked edge devices requiring TCP/IP stack or USB HID connectivity | Select when LAN or USB interface is required; otherwise LM3S612-EQN50-C2T offers lower cost and smaller footprint |
| TM4C123GH6PM | Successor family with same Cortex-M4F core, higher clock (80 MHz), enhanced ADC (12-bit), and updated peripheral set | Designed for next-generation designs needing floating-point math, higher resolution sensing, or extended lifecycle support | Choose TM4C123GH6PM for new designs requiring long-term availability and enhanced performance; LM3S612-EQN50-C2T remains viable for legacy maintenance |
Compared with LM3S612-EQN50-C2T, LM3S6965-EQN50-C2T adds connectivity at higher cost and complexity, while TM4C123GH6PM delivers architectural upgrades and extended roadmap support - making LM3S612-EQN50-C2T optimal for cost-sensitive, non-networked real-time control where proven stability matters.
Availability
LM3S612-EQN50-C2T is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and embedded HMI applications requiring stable component supply and long-lifecycle support.
Supply support for LM3S612-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, delivering analog and embedded processing solutions across industrial, automotive, and consumer markets since 1930.
The Stellaris LM3S series was engineered specifically for deterministic real-time control in resource-constrained industrial environments - emphasizing low-latency interrupt handling, integrated motor peripherals, and robust analog signal acquisition.
FAQ
What is the maximum operating frequency of the LM3S612-EQN50-C2T?
The LM3S612-EQN50-C2T operates at a maximum system clock frequency of 50 MHz, achieved using its internal PLL with an external crystal or the internal precision RC oscillator. This speed is fully supported across all peripherals, including ADC sampling, PWM generation, and UART baud-rate generation, as verified in the production datasheet revision SPMS112I.
Does the LM3S612-EQN50-C2T support CAN bus communication?
No, the LM3S612-EQN50-C2T does not include a CAN controller or physical layer interface. Its communication peripherals are limited to dual UARTs, I²C, SSI (SPI-compatible), and analog comparator - confirmed in Section 1.1 "Product Features" and Table 1-1 of the official datasheet. For CAN functionality, designers must use external transceivers with UART-based protocols or select a different Stellaris variant like the LM3S9B92.
What debug interface does the LM3S612-EQN50-C2T provide?
The LM3S612-EQN50-C2T provides a 5-pin JTAG interface compliant with IEEE 1149.1, supporting full boundary-scan, flash programming, and real-time debugging via SWD-compatible tools. Pin assignments (TCK, TMS, TDI, TDO, nTRST) are defined in Section 16 "Pin Diagram" and Section 4 of the datasheet, and it is compatible with TI's ICDI-based debug probes and third-party JTAG adapters.
Is the LM3S612-EQN50-C2T pin-compatible with other LM3S devices in the EQN package?
The LM3S612-EQN50-C2T shares the 100-pin EQN package footprint with several other LM3S devices (e.g., LM3S6965, LM3S8962), but pin functions differ significantly due to peripheral variations. While mechanical mounting is identical, signal mapping - especially for SSI, I²C, and PWM - is not interchangeable. Board-level compatibility requires verification against each device's specific signal table (Section 17.1).
What is the qualified temperature range for the LM3S612-EQN50-C2T?
The LM3S612-EQN50-C2T is rated for industrial temperature operation from –40°C to +85°C, as specified in the "Orderable Devices" table and "Absolute Maximum Ratings" section of the datasheet. This range applies to all electrical characteristics unless otherwise noted, and the device undergoes production testing across this full range per TI's standard warranty terms.
LM3S612-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:
- 34
- 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:
- A/D 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S612-EQN50-C2T FAQ
1.How can I place an order for LM3S612-EQN50-C2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S612-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 LM3S612-EQN50-C2T reliable?
The price and inventory of LM3S612-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 LM3S612-EQN50-C2T is usually 5 days.
3.What payment methods are accepted for LM3S612-EQN50-C2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S612-EQN50-C2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S612-EQN50-C2T?
LM3S612-EQN50-C2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S612-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 LM3S612-EQN50-C2T?
For technical support, including LM3S612-EQN50-C2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S612-EQN50-C2T requirements.
6.How does Aetrix verify that LM3S612-EQN50-C2T is sourced from the original manufacturer or authorized distributors?
All LM3S612-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 LM3S612-EQN50-C2T meets industry standards.
7.What is the process for return or replacement of LM3S612-EQN50-C2T?
All LM3S612-EQN50-C2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S612-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 LM3S612-EQN50-C2T part is unused and in its original packaging.
Return procedure for LM3S612-EQN50-C2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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