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Texas Instruments LM3S612-IGZ50-C2T
- Part No.:
- LM3S612-IGZ50-C2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
LM3S612-IGZ50-C2T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,524
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Product details
Overview
LM3S612-IGZ50-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. It operates at up to 50 MHz and targets motor control and industrial sensing applications requiring real-time deterministic response.
For engineers reviewing the LM3S612-IGZ50-C2T datasheet, LM3S612-IGZ50-C2T pinout, LM3S612-IGZ50-C2T application, or LM3S612-IGZ50-C2T equivalent, key selection criteria include its 50 MHz CPU clock, 256 KB on-chip flash with write protection, integrated motor-control peripherals (PWM with dead-band generation), and industrial-grade temperature range (–40°C to +85°C).
Technical Context
The LM3S612-IGZ50-C2T implements the ARM Cortex-M3 core with NVIC, SysTick, and MPU for deterministic interrupt handling and memory protection. It integrates dedicated motor-control hardware including three PWM generator blocks supporting complementary outputs with programmable dead-band insertion.
Its analog subsystem includes an 8-channel, 10-bit ADC with hardware averaging and internal temperature sensor, plus two independent analog comparators with programmable reference. Serial connectivity comprises two UARTs (one with IrDA support), one I²C master/slave, and one SSI interface compatible with SPI, Microwire, and TI synchronous serial protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, supports Thumb-2 instruction set for compact code and high efficiency |
| Max Clock Speed | 50 MHz - enables real-time control loops with sub-10 µs interrupt latency |
| Flash Memory | 256 KB - sufficient for complex firmware with bootloader, application, and field-upgrade partitioning |
| SRAM | 32 KB - supports stack, heap, and real-time data buffers for multi-tasking RTOS environments |
| ADC Resolution | 10-bit - provides 1024 quantization levels for precision analog monitoring in motor current or voltage sensing |
| PWM Channels | 6 - configurable as three independent 2-channel generators with dead-band control for 3-phase inverter gate drive |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient conditions without derating |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard industrial 3.3 V rail and tolerant of minor supply ripple |
Pinout & Package
LM3S612-IGZ50-C2T is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments support full peripheral multiplexing while maintaining GPIO flexibility across multiple banks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power Supply Inputs | Dedicated digital, analog, and core rails ensure noise isolation for mixed-signal operation |
| GND, GNDA, GNDC | Ground Returns | Separate analog/digital/core ground paths minimize coupling and preserve ADC accuracy |
| GPIO_A[7:0] | General-Purpose I/O Bank A | Supports alternate functions including UART0, SSI0, I²C0, and PWM0 - used for primary serial and timing interfaces |
| GPIO_B[7:0] | General-Purpose I/O Bank B | Configurable for PWM1, ADC0, analog comparator inputs, and external interrupt sources - critical for sensor and actuator interfacing |
| GPIO_C[7:0] | General-Purpose I/O Bank C | Provides UART1, PWM2, and additional ADC channels - enables redundant communication and extended motor phase control |
| OSC0/OSC1 | Crystal Oscillator Inputs | Accepts 4–25 MHz crystal for precise system clock generation; supports bypass mode for external clock input |
| nRST | Active-Low Reset Input | Asynchronous reset with internal pull-up; compatible with pushbutton, supervisor IC, or power-on reset circuits |
| JTAG_TCK/TMS/TDI/TDO/nTRST | JTAG Debug Interface | Full IEEE 1149.1-compliant debug port enabling SWD and JTAG programming, real-time trace, and breakpoint debugging |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Control PWM | Three independent PWM generator blocks with 2 complementary outputs each, programmable dead-band delay (0–16 µs), and fault shutdown input - eliminates need for external gate driver logic |
| Hardware-Accelerated ADC | 8-channel, 10-bit SAR ADC with 125 kSPS max sampling rate and on-the-fly hardware averaging (2x–64x) - reduces software overhead for noisy industrial sensor signals |
| Dual UART with IrDA Support | UART0 supports IrDA physical layer encoding/decoding in hardware - enables low-cost wireless diagnostics without external transceiver |
| Programmable Internal Reference | Analog comparator with selectable internal reference (1.25 V, 2.5 V) or external reference input - simplifies threshold detection for overvoltage/overcurrent protection |
| Memory Protection Unit (MPU) | 8-region MPU enforcing privilege-level access and memory attribute enforcement - supports safe RTOS partitioning and secure firmware updates |
| System-Level Debug | Embedded Trace Macrocell (ETM) and TPIU enable instruction trace and real-time variable monitoring - accelerates validation of time-critical control algorithms |
Applications
| Industrial Motor Drive | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC blowers and pump systems using space-vector modulation. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM waveform generation with synchronized ADC sampling, and fault monitoring. Use Value: Integrated PWM dead-band control and ADC trigger synchronization reduce jitter and improve torque smoothness by eliminating inter-peripheral timing skew. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality with local decision-making. IC Role / Device Role / Timing Role: Sensor interface hub, low-power scheduler, and edge-processing node executing threshold-based alerts before wireless transmission. Use Value: On-chip temperature sensor and hardware ADC averaging enable accurate drift-compensated readings without external calibration components. |
| Programmable Logic Controller (PLC) I/O Module | Industrial HMI Controller |
Use Scenario: Digital input/output expansion module with isolated field-side interfacing and deterministic scan-cycle timing. IC Role / Device Role / Timing Role: Deterministic I/O scanning engine with GPIO interrupt prioritization, watchdog supervision, and UART-based backplane communication. Use Value: Nested Vectored Interrupt Controller (NVIC) with 8 priority levels ensures sub-100 µs response to emergency stop inputs. | Use Scenario: Local display controller managing touch interface, LED indicators, and status reporting in factory-floor HMIs. IC Role / Device Role / Timing Role: Graphics co-processor companion, serial interface bridge (I²C to display, UART to host), and real-time status logger. Use Value: Dual UARTs allow simultaneous connection to display panel and upstream PLC, while SSI supports fast SPI-based OLED or TFT refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Tiva C TM4C123GH6PM | Successor device with same Cortex-M4F core, 256 KB flash, but adds FPU, USB, and enhanced PWM; 100-pin LQFP footprint identical | Required for floating-point math (e.g., advanced motor control algorithms) or USB device/host functionality | Select when migrating legacy LM3S designs to TI's supported Tiva platform with extended peripheral set |
| STM32F103VCT6 | ARM Cortex-M3 core, 256 KB flash, 48 KB RAM, but lacks integrated analog comparator and hardware IrDA; different pinout and peripheral mapping | Suitable where higher SRAM headroom is needed and external comparator or IrDA transceiver is acceptable | Choose for cost-sensitive industrial designs leveraging ST's broad ecosystem and toolchain compatibility |
Compared with TM4C123GH6PM and STM32F103VCT6, the LM3S612-IGZ50-C2T offers unique integration of IrDA PHY, analog comparator with internal reference, and deterministic motor-control PWM-making it optimal for legacy-replacement or cost-constrained embedded motion systems where those features eliminate BOM components.
Availability
LM3S612-IGZ50-C2T is available at Aetrix Electronics and suitable for industrial motor drives, smart sensor nodes, PLC I/O modules, and industrial HMI controllers requiring stable component supply and long-term obsolescence management.
Supply support for LM3S612-IGZ50-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 leader specializing in analog, embedded processing, and digital signal processing technologies, with decades of experience in industrial and automotive applications.
The Stellaris LM3S family was designed specifically for cost-sensitive, real-time industrial control applications-emphasizing integrated motor peripherals, robust analog sensing, and deterministic interrupt response without external support chips.
FAQ
What is the maximum operating frequency of the LM3S612-IGZ50-C2T?
The LM3S612-IGZ50-C2T operates at a maximum system clock frequency of 50 MHz. This speed is achieved using the internal PLL driven by the main oscillator (4–25 MHz crystal or external clock). At 50 MHz, the LM3S612-IGZ50-C2T delivers deterministic interrupt latency under 10 µs and supports real-time control loops with cycle times below 20 µs - essential for brushless DC motor commutation and closed-loop analog feedback systems.
Does the LM3S612-IGZ50-C2T include an integrated analog-to-digital converter?
Yes, the LM3S612-IGZ50-C2T integrates a 10-bit, 8-channel successive approximation register (SAR) ADC with a maximum sampling rate of 125 kSPS. It supports hardware sample averaging (2x–64x), programmable trigger sources (PWM, timer, software), and an internal temperature sensor. These capabilities make the LM3S612-IGZ50-C2T suitable for direct connection to current-sense resistors, potentiometers, and thermistors in motor drive and sensor interface applications.
What debug interfaces does the LM3S612-IGZ50-C2T support?
The LM3S612-IGZ50-C2T supports IEEE 1149.1-compliant JTAG and Serial Wire Debug (SWD) via its dedicated debug pins (TCK, TMS, TDI, TDO, nTRST). It includes an Embedded Trace Macrocell (ETM) and Trace Port Interface Unit (TPIU) for real-time instruction trace. This enables full source-level debugging, live variable inspection, and timing analysis in IDEs such as Keil µVision or TI Code Composer Studio - critical for validating time-critical firmware in the LM3S612-IGZ50-C2T.
Is the LM3S612-IGZ50-C2T pin-compatible with other Stellaris devices?
The LM3S612-IGZ50-C2T uses a 100-pin LQFP package with a specific pinout defined in the LM3S612 datasheet. While other LM3S devices (e.g., LM3S6965) share the same 100-pin LQFP footprint, they differ in peripheral assignment, memory size, and feature set. The LM3S612-IGZ50-C2T is not pin-compatible with non-LM3S612 variants due to differences in GPIO alternate function mapping and power pin distribution - PCB layout must be verified against the LM3S612-IGZ50-C2T-specific signal tables.
What industrial temperature range does the LM3S612-IGZ50-C2T support?
The LM3S612-IGZ50-C2T is rated for operation from –40°C to +85°C ambient temperature. This industrial-grade specification is validated across voltage (3.0 V–3.6 V) and frequency (up to 50 MHz) ranges per TI's production test flow. The device maintains full ADC linearity, PWM timing accuracy, and GPIO drive strength across this range - making the LM3S612-IGZ50-C2T appropriate for deployment in uncontrolled industrial enclosures, outdoor equipment, and factory automation systems.
LM3S612-IGZ50-C2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- Stellaris® ARM® Cortex®-M3S 600
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S612-IGZ50-C2T FAQ
1.How can I place an order for LM3S612-IGZ50-C2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S612-IGZ50-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-IGZ50-C2T reliable?
The price and inventory of LM3S612-IGZ50-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-IGZ50-C2T is usually 5 days.
3.What payment methods are accepted for LM3S612-IGZ50-C2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S612-IGZ50-C2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S612-IGZ50-C2T?
LM3S612-IGZ50-C2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S612-IGZ50-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-IGZ50-C2T?
For technical support, including LM3S612-IGZ50-C2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S612-IGZ50-C2T requirements.
6.How does Aetrix verify that LM3S612-IGZ50-C2T is sourced from the original manufacturer or authorized distributors?
All LM3S612-IGZ50-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-IGZ50-C2T meets industry standards.
7.What is the process for return or replacement of LM3S612-IGZ50-C2T?
All LM3S612-IGZ50-C2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S612-IGZ50-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-IGZ50-C2T part is unused and in its original packaging.
Return procedure for LM3S612-IGZ50-C2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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