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Texas Instruments LM3S2432-IQC50-A2T
- Part No.:
- LM3S2432-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2432-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,373
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Product details
Overview
LM3S2432-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller in 48-pin LQFP package, operating at 50 MHz with 256 KB Flash and 96 KB SRAM. It integrates dual 10-bit ADCs (8-channel, 1 Msps), 3 UARTs, 2 SSI/SPI, 2 I²C, 3 CAN controllers, USB Full-Speed Device/Host/OTG, and 8 PWM outputs. Designed for real-time motion control and industrial connectivity applications including HVAC systems and factory automation.
For engineers reviewing the LM3S2432-IQC50-A2T datasheet, LM3S2432-IQC50-A2T pinout, LM3S2432-IQC50-A2T application, or LM3S2432-IQC50-A2T equivalent, key selection criteria include verified 50 MHz Cortex-M3 performance, integrated CAN/USB/Ethernet-capable peripheral set, deterministic interrupt latency (12-cycle max), and support for battery-backed hibernate mode with RTC.
Technical Context
The LM3S2432-IQC50-A2T implements ARM Cortex-M3 core with Thumb-2 instruction set, delivering 1.25 DMIPS/MHz and single-cycle multiply/hardware divide. Its NVIC supports tail-chaining interrupts with fixed 12-cycle latency, enabling hard real-time response in motor control loops.
On-chip analog subsystem includes two independent 10-bit ADCs each with 8 input channels and 1 Msps sampling rate, plus three analog comparators and internal temperature sensor. Motion control is accelerated by dedicated hardware: quadrature encoder inputs, dead-band generator, and 8 PWM outputs with configurable edge/center alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 @ 50 MHz - delivers deterministic real-time execution with 1.25 DMIPS/MHz and 12-cycle interrupt latency |
| Memory | 256 KB Flash + 96 KB SRAM - sufficient for complex control algorithms and protocol stacks without external memory |
| ADC | Dual 10-bit, 8-channel, 1 Msps - enables simultaneous sampling of multiple motor phase currents or sensor inputs |
| PWM Outputs | 8 outputs with dead-band generation - supports 3-phase inverter gate drive with programmable timing margins |
| Serial Interfaces | 3 UART, 2 SSI/SPI, 2 I²C, 3 CAN, USB FS Device/Host/OTG - full industrial connectivity stack for fieldbus and host interfacing |
| Operating Temp | -40°C to +85°C (Industrial grade) - qualified for deployment in HVAC, factory automation, and building control environments |
| Package | 48-pin LQFP (7×7 mm, 0.5 mm pitch) - surface-mount compatible with standard reflow profiles and accessible debug/test points |
Pinout & Package
LM3S2432-IQC50-A2T is housed in a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow TI's standardized Stellaris LQFP layout for consistent PCB layout reuse across LM3S3xx/LM3S6xx families.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply rails | Separate digital (VDD), analog (VDDA), and core (VDDC) supplies enable noise isolation for ADC and PLL operation |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and core ground pins minimize coupling between high-speed digital switching and precision analog circuits |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO bank terminals | All 32 GPIOs are 5V-tolerant, support interrupt-on-change, and feature programmable drive strength/slew rate for EMI control |
| PA0–PA7, PB0–PB7 | Peripheral multiplexed I/O | Shared with UART0/1, SSI0/1, I²C0/1, CAN0/1, PWM0/1, QEI0 - requires software-configurable alternate function selection |
| USB0EPEN, USB0PFLT | USB physical layer control | Enable/disable internal transceiver pull-ups and filter USB packet timing to meet USB 2.0 Full-Speed electrical compliance |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 Core | Delivers 50 MHz deterministic real-time execution with 12-cycle interrupt latency and hardware divide for fast PID loop math |
| Dual 10-bit ADC Subsystem | Two independent 8-channel, 1 Msps converters allow synchronized sampling of motor current and voltage for FOC algorithms |
| Integrated Motion Control Hardware | Quadrature encoder inputs, dead-band generator, and 8 PWM outputs eliminate need for external gate driver logic in BLDC drives |
| Battery-Backed Hibernate Module | Retains RTC, 256 bytes of hibernation RAM, and wake-on-external-interrupt capability for ultra-low-power monitoring modes |
| StellarisWare Peripheral Driver Library | Royalty-free C-based drivers pre-validated for all on-chip peripherals - accelerates development of USB CDC, CANopen, and Modbus RTU stacks |
Applications
| Motor Drive Controller | Building Automation Node |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC blowers and compressors. IC Role / Device Role / Timing Role: Real-time execution of Field-Oriented Control (FOC) algorithm with synchronized ADC sampling and PWM update at 20 kHz. Use Value: Integrated QEI, dead-band generator, and 8 PWM outputs reduce BOM count by eliminating external gate driver ICs and encoder interface chips. | Use Scenario: Networked thermostat and zone controller with CAN bus integration into BACnet MS/TP backbone. IC Role / Device Role / Timing Role: Dual-role CAN controller managing local sensor data aggregation and upstream protocol translation. Use Value: On-chip 3 CAN modules support concurrent operation of HVAC control network, security panel interface, and energy metering bus. |
| Industrial Data Logger | Medical Instrument Controller |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and air quality over 30-day intervals. IC Role / Device Role / Timing Role: Low-power hibernate mode with RTC wake-up and burst ADC acquisition every 10 seconds. Use Value: Battery-backed hibernation module retains timekeeping and critical state while consuming <2 µA, extending battery life beyond 1 year. | Use Scenario: Portable diagnostic device requiring precise analog signal conditioning and USB HID interface for PC communication. IC Role / Device Role / Timing Role: Simultaneous 10-bit ADC sampling of ECG/SpO₂ sensors and USB HID report generation at 125 Hz. Use Value: Dual ADC subsystem enables interleaved sampling without CPU intervention, while USB OTG supports both device and host roles for firmware updates via USB flash drive. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-IQC50-A2 | Same 50 MHz Cortex-M3 core, 256 KB Flash, 64 KB SRAM; adds 10/100 Ethernet MAC+PHY and IEEE 1588 timer | Targeted at networked industrial controllers requiring TCP/IP stack and precise time synchronization | Select LM3S6965-IQC50-A2 when Ethernet connectivity and IEEE 1588 timestamping are required; LM3S2432-IQC50-A2T offers lower cost and identical peripheral set for CAN/USB-only designs |
| LM3S811-IGZ50-A2 | Lower memory (64 KB Flash, 16 KB SRAM), no CAN, single USB device-only interface, 25 MHz max clock | Suitable for basic embedded control where protocol stack depth and real-time throughput are less demanding | Choose LM3S811-IGZ50-A2 for cost-sensitive applications with minimal peripheral requirements; LM3S2432-IQC50-A2T provides full CAN/USB/Ethernet-ready feature set at higher memory and clock headroom |
Compared with LM3S6965-IQC50-A2 and LM3S811-IGZ50-A2, the LM3S2432-IQC50-A2T delivers optimal balance of CAN/USB connectivity, 50 MHz real-time performance, and 256 KB Flash for complex motion control firmware-without the Ethernet overhead or memory constraints of its alternatives.
Availability
LM3S2432-IQC50-A2T is available at Aetrix Electronics and suitable for HVAC system controllers, factory automation PLC modules, and medical instrument front-ends requiring stable component supply and long-term industrial lifecycle support.
Supply support for LM3S2432-IQC50-A2T 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 with broad analog, embedded processing, and connectivity portfolios, serving industrial, automotive, and consumer markets since 1930.
The LM3S2432-IQC50-A2T belongs to the Stellaris family of ARM Cortex-M3 MCUs, designed specifically for cost-conscious real-time control applications demanding integrated analog, motion control, and industrial communication peripherals.
FAQ
What is the maximum operating frequency of the LM3S2432-IQC50-A2T?
The LM3S2432-IQC50-A2T operates at a maximum frequency of 50 MHz, as confirmed by its part number suffix "IQC50" and validated in Texas Instruments' official LM3S2432 datasheet. This speed is sustained across the full industrial temperature range (-40°C to +85°C) with appropriate power supply decoupling and thermal management. The LM3S2432-IQC50-A2T achieves deterministic real-time performance at this clock rate using the ARM Cortex-M3 core's single-cycle flash access and optimized pipeline.
Does the LM3S2432-IQC50-A2T support USB On-The-Go functionality?
Yes, the LM3S2432-IQC50-A2T includes a full-speed USB 2.0 controller supporting Device, Host, and On-The-Go (OTG) modes. Its USB PHY and controller are fully compliant with USB-IF certification requirements, and StellarisWare software provides royalty-free USB library support for HID, CDC, mass storage, and custom class implementations. The LM3S2432-IQC50-A2T uses the same USB subsystem architecture as other high-end Stellaris MCUs like the LM3S6965, enabling seamless firmware portability.
What analog features are integrated into the LM3S2432-IQC50-A2T?
The LM3S2432-IQC50-A2T integrates dual 10-bit, 8-channel, 1 Msps ADCs; three analog comparators; an internal temperature sensor; and precision voltage reference circuitry. These components are electrically isolated via separate VDDA/GNDA rails and support simultaneous sampling for multi-sensor applications. The LM3S2432-IQC50-A2T's analog subsystem is identical to that of the LM3S608 and LM3S615, enabling direct code reuse in sensor fusion and motor current monitoring designs.
Is the LM3S2432-IQC50-A2T pin-compatible with other Stellaris LQFP devices?
The LM3S2432-IQC50-A2T shares the same 48-pin LQFP footprint and pinout configuration as the LM3S3xx and LM3S6xx series (e.g., LM3S608, LM3S615), allowing PCB layout reuse across multiple Stellaris variants. All GPIO, peripheral, and power pins map identically per TI's LQFP pin assignment standard. However, unused pins may differ in secondary function availability, so schematic review against the LM3S2432-IQC50-A2T-specific datasheet is required before drop-in replacement.
What development tools are supported for the LM3S2432-IQC50-A2T?
The LM3S2432-IQC50-A2T is supported by ARM Keil MDK-ARM, IAR Embedded Workbench, CodeSourcery G++ GNU, and Code Red Red Suite toolchains. Texas Instruments provides the free LMFlash utility for programming, StellarisWare Peripheral Driver Library for C-based peripheral control, and evaluation kits such as the LM3S6965-EK for rapid prototyping. All tools target the LM3S2432-IQC50-A2T's JTAG/SWD debug interface and serial flash loader.
LM3S2432-IQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- A/D 3x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2432-IQC50-A2T FAQ
1.How can I place an order for LM3S2432-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2432-IQC50-A2T 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 LM3S2432-IQC50-A2T reliable?
The price and inventory of LM3S2432-IQC50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2432-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2432-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2432-IQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2432-IQC50-A2T?
LM3S2432-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2432-IQC50-A2T 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 LM3S2432-IQC50-A2T?
For technical support, including LM3S2432-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2432-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S2432-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2432-IQC50-A2T 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 LM3S2432-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2432-IQC50-A2T?
All LM3S2432-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2432-IQC50-A2T, 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 LM3S2432-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S2432-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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