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Texas Instruments LM3S612-EGZ50-C2
- Part No.:
- LM3S612-EGZ50-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
LM3S612-EGZ50-C2.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,185
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Product details
Overview
LM3S612-EGZ50-C2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 64 KB flash, 24 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-EGZ50-C2 datasheet, LM3S612-EGZ50-C2 pinout, LM3S612-EGZ50-C2 application, or LM3S612-EGZ50-C2 equivalent, key selection criteria include its 50 MHz operation, QFP-100 package, 3.3 V supply, integrated motor control peripherals, and legacy StellarisWare® software support.
Technical Context
The LM3S612-EGZ50-C2 implements the ARM Cortex-M3 core with nested vectored interrupt controller (NVIC), SysTick timer, and memory protection unit (MPU). It supports Thumb-2 instruction set and delivers deterministic real-time response with <12 ns interrupt latency.
Its system-level integration includes programmable clock gating, multiple sleep modes (sleep/deep-sleep), and reset sources including power-on, external, watchdog, and software-initiated resets - all managed via dedicated system control registers at fixed memory-mapped addresses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs Thumb-2 instructions at up to 50 MHz |
| Flash Memory | 64 KB on-chip flash with 128-bit wide interface and 1-cycle access at 50 MHz |
| SRAM | 24 KB on-chip SRAM, zero-wait-state operation up to 50 MHz |
| ADC | 10-bit SAR ADC with 8 input channels, hardware averaging, and internal temperature sensor |
| Timers | Two 32-bit general-purpose timers (GPTM), one 32-bit watchdog timer, and one SysTick timer |
| Communication | Dual UARTs (with FIFO and modem control), one I²C master/slave, one SSI (SPI-compatible) |
| PWM & Analog | 6-channel PWM generator with dead-band control, plus two analog comparators with reference voltage |
Pinout & Package
LM3S612-EGZ50-C2 is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermally enhanced exposed pad, and RoHS-compliant finish. Pin assignments are defined per TI SPMS112I datasheet Section 16 (Pin Diagram) and Section 17 (Signal Tables).
| 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 mixed-signal operation |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling between signal domains |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO pins with alternate functions | Configurable as UART0/1, SSI0, I²C0, PWM0/1, ADC0, or comparator inputs - multiplexed per GPIO AFSEL register |
| OSC0, OSC1 | Crystal oscillator terminals | Supports 1–25 MHz crystal or external clock source for system clock generation |
| nRST | Active-low reset input | Asynchronous reset with internal pull-up; asserts full chip reset including peripherals and NVIC state |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Control Peripherals | 6-channel PWM with configurable dead-band, fault protection, and synchronization - eliminates need for external gate drivers in BLDC/servo systems |
| Hardware-Accelerated ADC Averaging | Up to 64-sample hardware averaging per conversion reduces firmware overhead and improves SNR in noisy industrial environments |
| Multiple Low-Power Sleep Modes | Three sleep states (sleep, deep-sleep, shutdown) with selective peripheral clock gating - enables sub-10 µA standby current with RTC wake-up |
| On-Chip Debug Interface | JTAG/SWD debug port with full NVIC visibility, real-time trace via TPIU, and non-intrusive breakpoints - supports production firmware validation |
| Memory Protection Unit (MPU) | 8-region MPU enforces privilege separation between application and kernel code - critical for certified industrial firmware stacks |
Applications
| Industrial Motor Control | Factory Automation Sensor Node |
|---|---|
Use Scenario: Closed-loop control of brushless DC motors in conveyor drives and packaging machinery. IC Role / Device Role / Timing Role: Real-time execution of FOC (field-oriented control) algorithms using PWM, ADC, and timer peripherals synchronized at 50 kHz update rate. Use Value: On-chip PWM dead-band and fault handling reduce external component count by ≥3 ICs while maintaining SIL-2 functional safety readiness. | Use Scenario: Distributed temperature, pressure, and vibration monitoring across PLC-connected field devices. IC Role / Device Role / Timing Role: Sensor data acquisition hub with 10-bit ADC, I²C sensor interface, and UART-based Modbus RTU communication. Use Value: Integrated hardware averaging and low-power sleep modes extend battery life to >2 years in wireless sensor nodes operating at 1 Hz sampling. |
| Programmable Logic Controller (PLC) I/O Module | Embedded HMI Controller |
Use Scenario: Digital input/output expansion module with isolated 24 V DC inputs and relay-driving outputs. IC Role / Device Role / Timing Role: Deterministic I/O scanning engine using GPIO interrupts, watchdog supervision, and UART diagnostics link. Use Value: NVIC priority grouping ensures <5 µs response to emergency stop signals - meeting IEC 61508 hardware fault tolerance requirements. | Use Scenario: Local operator interface for HVAC controllers with touch overlay, LED status indicators, and buzzer feedback. IC Role / Device Role / Timing Role: UI processor managing capacitive touch scan, PWM-driven LED dimming, and audio tone generation via GPIO toggling. Use Value: Dual UARTs allow simultaneous host MCU communication and field-service USB-to-UART debug access without multiplexer hardware. |
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, FPU, and enhanced peripherals; requires PCB layout revision due to 64-pin LQFP vs. 100-pin | Higher precision math (FPU), USB OTG, and Ethernet MAC not present in LM3S612-EGZ50-C2 | Select when new designs require floating-point performance or USB connectivity; not drop-in compatible |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, 64 KB SRAM, but lacks integrated analog comparator and motor control PWM features | Broader ecosystem and longer lifecycle, but requires external comparators and gate drivers for motor control | Choose for cost-sensitive general-purpose embedded control where advanced motor peripherals are unnecessary |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S612-EGZ50-C2 offers optimized analog/motor integration in a mature, pin-stable footprint - ideal for sustaining legacy industrial designs where BOM continuity and software reuse outweigh raw performance gains.
Availability
LM3S612-EGZ50-C2 is available at Aetrix Electronics and suitable for industrial motor control, factory automation sensor nodes, PLC I/O modules, and embedded HMI controllers requiring stable component supply and long-term obsolescence management.
Supply support for LM3S612-EGZ50-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 over 90 years of innovation in industrial, automotive, and communications markets.
The Stellaris LM3S series was engineered specifically for deterministic real-time control in resource-constrained industrial environments - emphasizing integrated analog, motor peripherals, and robust debug infrastructure over raw clock speed.
FAQ
What is the maximum operating frequency of the LM3S612-EGZ50-C2?
The LM3S612-EGZ50-C2 operates at a maximum system clock frequency of 50 MHz, derived from its internal PLL or direct crystal input. This frequency is fully supported across all on-chip peripherals including ADC, PWM, and UARTs - verified in TI's SPMS112I production datasheet under "Electrical Characteristics" section.
Does the LM3S612-EGZ50-C2 support JTAG debugging?
Yes, the LM3S612-EGZ50-C2 includes a standard 5-pin JTAG interface (TCK, TMS, TDI, TDO, nTRST) compliant with IEEE 1149.1. It supports full boundary-scan, real-time trace via TPIU, and non-intrusive breakpoints - documented in Section 4 of the SPMS112I datasheet.
What are the power supply requirements for the LM3S612-EGZ50-C2?
The LM3S612-EGZ50-C2 requires three independent 3.3 V supplies: VDD (digital I/O), VDDA (analog circuitry), and VDDC (core logic). Each must be decoupled with 100 nF ceramic capacitors close to respective pins - specified in Section 5.2.3 ("Power Control") of the SPMS112I datasheet.
Is the LM3S612-EGZ50-C2 still in production?
Texas Instruments discontinued the LM3S612-EGZ50-C2 in 2018 as part of the Stellaris product line transition to Tiva C. However, Aetrix Electronics maintains active inventory and provides extended lifecycle sourcing - including traceable batch documentation and last-time-buy coordination for legacy industrial programs.
What software development tools support the LM3S612-EGZ50-C2?
The LM3S612-EGZ50-C2 is supported by TI's legacy StellarisWare® Peripheral Driver Library, Keil MDK-ARM v4.x, IAR Embedded Workbench for ARM v6.x, and GCC-based toolchains targeting ARM Cortex-M3. All drivers and examples are archived on ti.com under "Stellaris Microcontrollers" legacy resources.
LM3S612-EGZ50-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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S612-EGZ50-C2 FAQ
1.How can I place an order for LM3S612-EGZ50-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S612-EGZ50-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-EGZ50-C2 reliable?
The price and inventory of LM3S612-EGZ50-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-EGZ50-C2 is usually 5 days.
3.What payment methods are accepted for LM3S612-EGZ50-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S612-EGZ50-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S612-EGZ50-C2?
LM3S612-EGZ50-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S612-EGZ50-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-EGZ50-C2?
For technical support, including LM3S612-EGZ50-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S612-EGZ50-C2 requirements.
6.How does Aetrix verify that LM3S612-EGZ50-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S612-EGZ50-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-EGZ50-C2 meets industry standards.
7.What is the process for return or replacement of LM3S612-EGZ50-C2?
All LM3S612-EGZ50-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S612-EGZ50-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-EGZ50-C2 part is unused and in its original packaging.
Return procedure for LM3S612-EGZ50-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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