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Texas Instruments LM3S1150-IQC50-A2
- Part No.:
- LM3S1150-IQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S1150-IQC50-A2.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,261
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Product details
Overview
LM3S1150-IQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated hibernation module, 4x UARTs, 2x SSI, I²C, PWM, QEI, and analog comparators. It operates at up to 50 MHz and supports industrial motor control, embedded HMI, and battery-backed real-time applications.
For engineers reviewing the LM3S1150-IQC50-A2 datasheet, LM3S1150-IQC50-A2 pinout, LM3S1150-IQC50-A2 application, or LM3S1150-IQC50-A2 equivalent, key selection criteria include hibernation-capable RTC, dual PWM fault protection, QEI for position sensing, and JTAG/SWD debug support in a 100-pin LQFP package.
Technical Context
The LM3S1150-IQC50-A2 integrates an ARM Cortex-M3 core with NVIC, SysTick, MPU, and TPIU for deterministic real-time execution. It features a dedicated hibernation module with battery-backed RTC and 2 KB RAM, enabling sub-5 µA deep-sleep operation while retaining timekeeping and state.
Peripherals include four UARTs (one with IrDA/SIR), two SSI controllers supporting Motorola/Freescale and TI frame formats, and a full-featured PWM block with dead-band generation, fault inputs, and synchronized timer groups-optimized for three-phase motor drive and digital power control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, 50 MHz max clock - enables deterministic interrupt latency & efficient C/C++ code execution |
| Memory | 256 KB on-chip flash + 32 KB SRAM - sufficient for standalone firmware with bootloader and real-time task stack |
| Hibernation Module | Battery-backed RTC + 2 KB hibernate RAM - retains time and critical state during main power loss |
| PWM | 6-channel, 16-bit, with dead-band, fault inputs, and sync - supports 3-phase inverter control with hardware safety |
| QEI | Quadrature encoder interface with index and phase A/B inputs - directly interfaces rotary encoders for position/speed feedback |
| Debug Interface | JTAG + SWD - enables full-cycle debugging, flash programming, and real-time trace via TPIU |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - standard surface-mount footprint compatible with industrial PCB assembly |
Pinout & Package
LM3S1150-IQC50-A2 is housed in a 100-pin LQFP package (JEDEC MO-152AC) with exposed thermal pad. Pin functions are multiplexed across GPIO banks A–F and dedicated peripheral pins including JTAG/SWD, hibernation wake-up inputs, and PWM fault signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate domains for digital logic (VDD), analog (VDDA), and core (VDDC) - enable noise isolation for ADC/comparator operation |
| GPIOA[7:0] | General-purpose I/O bank A | Configurable as UART0/SSI0/I²C0 pins - primary serial interface routing for sensor or host communication |
| PH0/PH1 | Hibernate module inputs | HIBRST (reset) and HIBWAKE (wake) - allow external battery-backed circuitry to manage low-power transitions |
| PF0–PF5 | PWM output terminals | Drive high-side/low-side gate drivers - six outputs support complementary PWM pairs with programmable dead-band |
| PD6/PD7 | QEI phase inputs | Direct connection to encoder A/B channels - hardware quadrature decoding relieves CPU load in motion control |
| TCK/TMS/TDO/TDI/nTRST | JTAG debug interface | Standard 5-pin JTAG boundary scan - supports in-circuit programming and real-time debugging without boot loader |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation module with RTC | Retains accurate time and 2 KB RAM on coin-cell backup - eliminates need for external RTC and nonvolatile memory in portable systems |
| Dual PWM timer groups with fault protection | Hardware-driven shutdown on overcurrent/fault input - prevents MOSFET shoot-through without software intervention |
| Quadrature Encoder Interface (QEI) | Hardware position counting and direction detection - supports 16-bit counter with index capture for homing sequences |
| Integrated analog comparators | Two rail-to-rail comparators with selectable internal reference - enable fast overvoltage/undervoltage monitoring without external components |
| Multiple serial interfaces | 4 UARTs (1 with IrDA), 2 SSI, 1 I²C - allows concurrent communication with displays, sensors, and legacy peripherals |
Applications
| Industrial Motor Control | Embedded Human-Machine Interface |
|---|---|
Use Scenario: Closed-loop control of BLDC or stepper motors in HVAC actuators and factory automation drives. IC Role / Device Role / Timing Role: Real-time motor commutation controller with QEI feedback, PWM generation, and fault-safe shutdown. Use Value: Integrated QEI and dual PWM groups eliminate external timing ICs and reduce BOM count by 3+ components. | Use Scenario: Local control panel with LCD, buttons, and status LEDs in medical devices or test equipment. IC Role / Device Role / Timing Role: Main system controller handling display refresh, button debouncing, LED sequencing, and USB/UART host bridging. Use Value: On-chip 256 KB flash stores full GUI firmware; hibernation mode extends battery life during standby. |
| Battery-Powered Data Logger | Smart Sensor Node |
Use Scenario: Environmental monitoring node logging temperature/humidity at 10-minute intervals using coin-cell power. IC Role / Device Role / Timing Role: Low-power data acquisition controller with RTC-triggered wake-up and flash-based storage. Use Value: Sub-5 µA hibernation current and battery-backed RTC enable >5-year operation on CR2032. | Use Scenario: Industrial vibration sensor node with analog front-end, ADC, and wireless transceiver interface. IC Role / Device Role / Timing Role: Signal conditioning and preprocessing unit feeding processed data to RF module via UART or SSI. Use Value: Integrated analog comparators detect threshold breaches before waking CPU - reduces average power by 70% vs polling. |
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 family with enhanced peripherals, 80 MHz CPU, 256 KB flash, but no hibernation module or battery-backed RAM | Lacks integrated RTC retention and ultra-low-power hibernate - requires external RTC for timekeeping during power-off | Select when higher performance and USB OTG are needed; avoid if battery-backed timekeeping is mandatory |
| STM32F103VCT6 | ARM Cortex-M3 at 72 MHz, 256 KB flash, 48 KB RAM, but no hibernation module or QEI peripheral | No hardware quadrature decoding or battery-backed RTC - QEI must be emulated in software, increasing CPU load | Choose for cost-sensitive designs where external RTC and software QEI are acceptable trade-offs |
Compared with TM4C123GH6PM and STM32F103VCT6, the LM3S1150-IQC50-A2 uniquely delivers integrated hibernation with battery-backed RTC and hardware QEI - reducing external component count and firmware complexity in battery-powered motion-control applications.
Availability
LM3S1150-IQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, embedded HMI, and battery-powered data loggers requiring stable component supply and long-term lifecycle support.
Supply support for LM3S1150-IQC50-A2 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as the first ARM Cortex-M3-based microcontroller family for cost-sensitive, real-time embedded applications - emphasizing low-power operation, integrated peripherals, and ease of migration from 8/16-bit MCUs.
FAQ
What is the maximum operating frequency of the LM3S1150-IQC50-A2?
The LM3S1150-IQC50-A2 operates at a maximum system clock frequency of 50 MHz. This is achieved using the internal PLL with an external crystal or oscillator input. The ARM Cortex-M3 core executes instructions at this rate, and all synchronous peripherals-including UARTs, SSI, and PWM-are clocked accordingly. Performance benchmarks confirm consistent 1.25 DMIPS/MHz throughput under real-world conditions.
Does the LM3S1150-IQC50-A2 support in-system programming via UART?
Yes, the LM3S1150-IQC50-A2 supports UART-based in-system programming (ISP) using the built-in ROM bootloader. When the BOOTCFG pin is asserted at reset, the device enters bootloader mode and accepts firmware images over UART0. This enables field updates without JTAG hardware, though full debug capability requires JTAG/SWD access.
What power modes does the LM3S1150-IQC50-A2 support, and what is the lowest current draw?
The LM3S1150-IQC50-A2 supports Sleep, Deep-Sleep, and Hibernate modes. In Hibernate mode with RTC active and 2 KB RAM retained, typical current draw is 4.9 µA at 3.3 V. This mode maintains timekeeping and critical state on battery backup, making it ideal for energy-constrained applications where periodic wake-up is required.
Is the LM3S1150-IQC50-A2 pin-compatible with other Stellaris LM3S devices?
No, the LM3S1150-IQC50-A2 is not pin-compatible with other LM3S devices outside its specific variant group. While it shares the 100-pin LQFP package with LM3S811 and LM3S8962, pin assignments for peripherals like PWM, QEI, and hibernation signals differ. Board layout must be verified against the LM3S1150-IQC50-A2-specific pinout table in the SPMS012I datasheet.
What development tools are officially supported for the LM3S1150-IQC50-A2?
Texas Instruments officially supports Keil MDK-ARM, IAR Embedded Workbench, and GCC-based toolchains (including LM Flash Programmer and StellarisWare Peripheral Driver Library). TI's evaluation kits - such as the EK-LM3S1150 - provide hardware reference design, JTAG debugging, and example firmware targeting the LM3S1150-IQC50-A2 specifically.
LM3S1150-IQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1150-IQC50-A2 FAQ
1.How can I place an order for LM3S1150-IQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1150-IQC50-A2 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 LM3S1150-IQC50-A2 reliable?
The price and inventory of LM3S1150-IQC50-A2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S1150-IQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S1150-IQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1150-IQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1150-IQC50-A2?
LM3S1150-IQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1150-IQC50-A2 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 LM3S1150-IQC50-A2?
For technical support, including LM3S1150-IQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1150-IQC50-A2 requirements.
6.How does Aetrix verify that LM3S1150-IQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S1150-IQC50-A2 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 LM3S1150-IQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S1150-IQC50-A2?
All LM3S1150-IQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1150-IQC50-A2, 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 LM3S1150-IQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S1150-IQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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