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Texas Instruments LM3S612-IGZ50-C2
- Part No.:
- LM3S612-IGZ50-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
LM3S612-IGZ50-C2.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,530
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Product details
Overview
LM3S612-IGZ50-C2 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-IGZ50-C2 datasheet, LM3S612-IGZ50-C2 pinout, LM3S612-IGZ50-C2 application, or LM3S612-IGZ50-C2 equivalent, key selection criteria include its 50 MHz CPU clock, QFP-100 package with 74 GPIOs, 12-bit internal temperature sensor, watchdog timer, and support for deterministic interrupt latency in safety-critical embedded systems.
Technical Context
The LM3S612-IGZ50-C2 implements the ARMv7-M architecture with Thumb-2 instruction set, NVIC supporting up to 48 configurable interrupts, and SysTick timer for OS tick generation. It integrates a memory protection unit (MPU) and supports both little-endian and big-endian data access modes.
Its system-level peripherals include clock gating per module, reset controller with power-on reset and brown-out detection, and voltage regulator enabling operation from 3.3 V ±10%. The device uses a single-cycle flash interface with prefetch buffer to sustain 50 MHz core performance without wait states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz - enables deterministic real-time response in motor control loops. |
| Flash Memory | 256 KB on-chip, single-cycle access - sufficient for firmware + bootloader + field-upgrade image storage. |
| SRAM | 32 KB, zero-wait-state operation - supports real-time stack, DMA buffers, and sensor data aggregation. |
| ADC | 10-bit, 8-channel, 1 MSPS sampling rate - suitable for analog feedback in closed-loop motor drives. |
| Timers | 4× 32-bit general-purpose timers (GPTM), 1× watchdog, 1× SysTick - provides precise timing for PWM generation and system supervision. |
| Communication | 2× UART, 1× I²C, 1× SSI - enables serial telemetry, sensor bus connectivity, and SPI-based display/flash interfacing. |
| Package | 100-pin LQFP (14 mm × 14 mm), 0.5 mm pitch - compatible with standard industrial PCB assembly processes. |
Pinout & Package
LM3S612-IGZ50-C2 is housed in a 100-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad. Pin numbering follows standard counter-clockwise sequence from pin 1 (top-left corner, marked by dot).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core power supply | 3.3 V ±10% input; decoupling required per TI layout guidelines to ensure stable 50 MHz operation. |
| GND | Ground reference | Dedicated analog/digital ground pins provided; separation recommended for noise-sensitive ADC/PWM use. |
| PD0–PD7 | GPIO Port D | Configurable as digital I/O, UART0 RX/TX, SSI0 clock/data, or PWM outputs - supports multiplexed peripheral routing. |
| PA0–PA7 | GPIO Port A | Includes ADC0 channel inputs (PA0–PA3), UART1 signals, and external interrupt sources - enables compact sensor interface design. |
| PF0–PF4 | GPIO Port F | Supports NMI, user LED, and analog comparator inputs; PF0 is shared with NMI and must be configured carefully for debug use. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Analog Comparator | Two independent comparators with programmable hysteresis and interrupt capability - enables overvoltage/undervoltage fault detection without external components. |
| PWM Module | 6-channel PWM generator with dead-band insertion and fault shutdown - directly controls 3-phase inverter gate drivers in motor drives. |
| Internal Temperature Sensor | Calibrated 12-bit output referenced to VDD - allows board-level thermal monitoring without external sensor placement or calibration. |
| Memory Protection Unit (MPU) | 8-region MPU with configurable access permissions - enforces code/data isolation for certified firmware partitions in industrial safety applications. |
| Bootloader Support | ROM-resident In-Application Programming (IAP) loader - permits field firmware updates via UART or USB without external programmer. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed/torque control of BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithm with synchronized ADC sampling and PWM update at 20 kHz. Use Value: Integrated PWM dead-band logic and analog comparator reduce BOM count and eliminate external fault-handling logic. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and pressure via I²C sensors. IC Role / Device Role / Timing Role: Low-power coordinator managing sensor polling, data logging to flash, and UART telemetry transmission every 30 seconds. Use Value: 32 KB SRAM enables local buffering; 256 KB flash stores sensor calibration tables and firmware updates. |
| Programmable Logic Controller (PLC) I/O Module | Power Supply Monitoring Unit |
Use Scenario: DIN-rail mounted digital I/O expansion module with 16-channel isolated inputs and 8-channel relay outputs. IC Role / Device Role / Timing Role: Central controller handling GPIO state scanning, watchdog supervision, and Modbus RTU communication over UART1. Use Value: Dual UARTs allow simultaneous host interface and fieldbus communication; GPIO alternate functions simplify hardware routing. | Use Scenario: DC-DC converter supervisory unit monitoring input voltage, output current, and thermal shutdown thresholds. IC Role / Device Role / Timing Role: Analog comparator inputs detect overvoltage/overcurrent events; GPIO-driven latch disables MOSFET gate drive within 1 µs. Use Value: Sub-microsecond comparator response time ensures compliance with IEC 62368-1 fault reaction requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-IQC50-C2 | Same Cortex-M3 core, but includes USB 2.0 OTG controller and 64 KB SRAM; lacks analog comparator. | Better suited for host/device USB connectivity; not optimal for analog fault-detection–centric designs. | Select when USB interface is mandatory and analog comparator is non-critical. |
| TM4C123GH6PM | Successor family with enhanced peripherals (CAN, Ethernet MAC), 256 KB flash, 32 KB SRAM, same 100-pin LQFP package. | Offers extended lifecycle, CAN bus support, and improved ADC SNR - ideal for next-gen industrial upgrades. | Choose for new designs requiring long-term availability and CAN-based distributed control. |
Compared with LM3S612-IGZ50-C2, LM3S6965-IQC50-C2 trades analog comparator functionality for USB capability, while TM4C123GH6PM delivers backward-compatible pinout and enhanced feature set - making it the preferred migration path for production continuity and future-proofing.
Availability
LM3S612-IGZ50-C2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and power supply monitoring units requiring stable component supply across multi-year production cycles.
Supply support for LM3S612-IGZ50-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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in industrial and automotive-grade microcontrollers.
The Stellaris LM3S series was engineered for deterministic real-time control in cost-sensitive industrial applications, emphasizing low-latency interrupt response, integrated analog peripherals, and robust flash reliability under temperature cycling.
FAQ
What is the maximum operating frequency of the LM3S612-IGZ50-C2?
The LM3S612-IGZ50-C2 operates at a maximum CPU clock frequency of 50 MHz, achieved using an internal PLL driven from the main oscillator or precision internal RC oscillator. This frequency is fully supported across the full industrial temperature range (–40°C to +85°C) and 3.3 V supply, with no wait states required for flash or SRAM access.
Does the LM3S612-IGZ50-C2 support in-system programming (ISP)?
Yes, the LM3S612-IGZ50-C2 supports in-system programming via its ROM-resident bootloader, accessible through UART0. Firmware updates can be performed without external JTAG hardware, using standard ASCII command sequences. The bootloader validates flash writes and preserves protected sectors such as the vector table and boot configuration.
What are the ADC specifications of the LM3S612-IGZ50-C2?
The LM3S612-IGZ50-C2 features a 10-bit successive-approximation ADC with 8 input channels, 1 MSPS maximum sample rate, and hardware averaging across up to 64 samples. It includes dedicated sample sequencers for autonomous triggering and supports differential input mode on selected channels, with internal reference derived from VDD.
Is the LM3S612-IGZ50-C2 pin-compatible with other Stellaris devices?
No, the LM3S612-IGZ50-C2 is not pin-compatible with most other Stellaris microcontrollers. While it shares the 100-pin LQFP package with several variants (e.g., LM3S6965), signal mapping differs significantly - especially for analog peripherals, PWM outputs, and comparator inputs. PCB layout must be verified against the specific LM3S612-IGZ50-C2 pin diagram.
What debug interfaces does the LM3S612-IGZ50-C2 support?
The LM3S612-IGZ50-C2 supports IEEE 1149.1 JTAG debugging via dedicated TCK, TMS, TDI, TDO, and TRST pins. It also implements SWD (Serial Wire Debug) protocol over the same physical pins, enabling compatibility with modern debug probes. Both interfaces provide full visibility into core registers, memory, and peripheral states during development and validation.
LM3S612-IGZ50-C2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- Stellaris® ARM® Cortex®-M3S 600
- Packaging:
- Tray
- 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-C2 FAQ
1.How can I place an order for LM3S612-IGZ50-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S612-IGZ50-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 LM3S612-IGZ50-C2 reliable?
The price and inventory of LM3S612-IGZ50-C2 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-C2 is usually 5 days.
3.What payment methods are accepted for LM3S612-IGZ50-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S612-IGZ50-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S612-IGZ50-C2?
LM3S612-IGZ50-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S612-IGZ50-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 LM3S612-IGZ50-C2?
For technical support, including LM3S612-IGZ50-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S612-IGZ50-C2 requirements.
6.How does Aetrix verify that LM3S612-IGZ50-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S612-IGZ50-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 LM3S612-IGZ50-C2 meets industry standards.
7.What is the process for return or replacement of LM3S612-IGZ50-C2?
All LM3S612-IGZ50-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S612-IGZ50-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 LM3S612-IGZ50-C2 part is unused and in its original packaging.
Return procedure for LM3S612-IGZ50-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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