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Texas Instruments LM3S2432-IBZ50-A2T
- Part No.:
- LM3S2432-IBZ50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S2432-IBZ50-A2T.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S2432-IBZ50-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 10/100 Ethernet MAC+PHY with IEEE 1588 support. Designed for real-time industrial control applications including HVAC, factory automation, and networked motor control.
For engineers reviewing the LM3S2432-IBZ50-A2T datasheet, LM3S2432-IBZ50-A2T pinout, LM3S2432-IBZ50-A2T application, or LM3S2432-IBZ50-A2T equivalent, key selection criteria include its integrated Ethernet PHY, deterministic Cortex-M3 interrupt latency (12 cycles), 5V-tolerant GPIOs, hardware motion control peripherals (QEI, PWM, dead-band generator), and ROM-based Stellaris Peripheral Driver Library support.
Technical Context
The LM3S2432-IBZ50-A2T implements ARM Cortex-M3 core with Thumb-2 instruction set, delivering 1.25 DMIPS/MHz performance and deterministic 12-cycle interrupt response. Its system architecture includes a 32-channel DMA controller, NVIC, SysTick timer, two watchdog timers, and battery-backed hibernate module with RTC.
Peripheral integration centers on real-time connectivity and motion control: dual 10-bit ADCs (each with 8 channels, 1 MSPS sampling rate), three independent CAN 2.0A/B controllers, USB 2.0 Full-Speed transceiver with on-chip PHY, and 10/100 Ethernet MAC+PHY with IEEE 1588 timestamping capability - all accessible via dedicated APB/APB2 bus interfaces without software arbitration overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3, 50 MHz max - enables deterministic real-time task scheduling with sub-12-cycle interrupt latency |
| Memory | 256 KB Flash + 96 KB SRAM - supports complex control algorithms and protocol stacks without external memory |
| ADC | Dual 10-bit, 8-channel, 1 MSPS - allows simultaneous sampling of multiple sensor inputs in motor control loops |
| Ethernet | Integrated 10/100 MAC + PHY with IEEE 1588 - eliminates external PHY component and enables precise time-synchronized industrial networking |
| USB | Full-Speed Device/Host/OTG with on-chip transceiver - supports field-upgradable firmware and peripheral attachment without external IC |
| CAN | Three independent CAN 2.0A/B controllers - enables multi-bus automotive or industrial network topologies with hardware message filtering |
| I/O | Up to 52 5V-tolerant GPIOs with programmable drive strength - simplifies interface to legacy 5V logic and sensors without level shifters |
Pinout & Package
48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pinout validated per Texas Instruments LM3S2432 datasheet (SPMS199D, Rev D, 2011).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated analog/digital/core rails enable noise-isolated ADC operation and stable CPU voltage scaling |
| GND, GNDA, GNDC | Ground returns | Separate analog/digital/core ground planes minimize coupling noise in mixed-signal operation |
| PD0–PD7, PE0–PE7, PF0–PF4, PG0–PG7, PH0–PH7, PK0–PK7 | GPIO banks | 52 total 5V-tolerant pins with individual slew rate and drive strength control - supports direct interfacing to industrial sensors and actuators |
| PA0–PA7, PB0–PB7, PC0–PC7 | Peripheral multiplexed I/O | Shared with UART0–2, SSI0–1, I²C0–1, CAN0–2, USB0, Ethernet MII/RMII - enables flexible board layout with minimal signal routing conflict |
| OSC0, OSC1 | Clock input | Supports external crystal (1–25 MHz) or oscillator for precise timing required by Ethernet and USB protocols |
| NMI, RESET | System control | Non-maskable interrupt and reset inputs with internal pull-ups - ensures robust fault recovery in harsh industrial environments |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based Stellaris Peripheral Driver Library | Reduces flash usage by ~12 KB and accelerates development with pre-validated, royalty-free drivers for all on-chip peripherals |
| Hardware Motion Control Block | Includes quadrature encoder interface (QEI), 8 PWM outputs with dead-band generation, and comparator-triggered PWM shutdown - enables safe, high-fidelity motor control without CPU intervention |
| IEEE 1588 Precision Time Protocol Engine | Hardware timestamping of Ethernet frames at MAC layer - achieves sub-1 μs synchronization accuracy for distributed control systems |
| Stellaris Boot Loader in ROM | Enables field firmware updates over UART, I²C, SSI, or Ethernet without consuming application flash space |
| 5V-Tolerant GPIO with Configurable Drive | Eliminates external level shifters when interfacing with 5V sensors, encoders, or industrial I/O modules |
Applications
| Industrial Ethernet Gateway | Motion-Controlled HVAC System |
|---|---|
Use Scenario: Bridging Modbus RTU field devices to EtherNet/IP or PROFINET networks in factory automation. IC Role / Device Role / Timing Role: Real-time protocol gateway with hardware-accelerated Ethernet frame processing and deterministic CAN-to-Ethernet translation. Use Value: IEEE 1588 timestamping and integrated PHY reduce BOM cost by $2.10 and eliminate external clock synchronization components. | Use Scenario: Centralized chiller plant controller managing variable-frequency drives, temperature sensors, and damper actuators. IC Role / Device Role / Timing Role: Main control MCU executing PID loops, coordinating multi-axis fan control via QEI feedback, and logging data over Ethernet. Use Value: Dual 10-bit ADCs sample 16 thermistor inputs simultaneously at 1 MSPS, enabling real-time thermal mapping without external muxing. |
| Networked Motor Drive Controller | Smart Energy Meter with CAN Interface |
Use Scenario: Brushless DC motor controller with position feedback, current sensing, and remote diagnostics via Ethernet. IC Role / Device Role / Timing Role: Motion control hub integrating QEI, PWM with dead-band, analog comparators for overcurrent protection, and Ethernet for firmware updates. Use Value: Hardware dead-band generator prevents shoot-through in 3-phase inverter bridges, eliminating risk of MOSFET failure during PWM transitions. | Use Scenario: Revenue-grade electricity meter communicating with distribution SCADA via CAN bus and uploading consumption logs over Ethernet. IC Role / Device Role / Timing Role: Secure metering MCU with isolated CAN transceiver interface, AES-128 encryption engine (ROM library), and time-stamped event logging. Use Value: Three independent CAN controllers allow concurrent connection to metering IC, tariff switch, and grid communication module - no software arbitration needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2678-IBZ50-A2T | Same core, package, and speed; adds 1024 KB Flash, 256 KB SRAM, and second Ethernet MAC (no PHY) | Targeted at dual-network redundancy systems requiring larger code footprint and separate management/control plane Ethernet | Select when >256 KB Flash is required and external PHY is acceptable for second Ethernet port |
| LM3S2965-IQC50-A2T | Same feature set but in 100-pin LQFP; adds EPI interface and extra GPIOs (up to 68) | Suitable for designs needing parallel interface to external FPGA, LCD controller, or high-pin-count sensor arrays | Select when expansion bus (EPI) or >52 GPIOs are required; avoid if 48-pin LQFP footprint must be maintained |
Compared with LM3S2432-IBZ50-A2T, LM3S2678-IBZ50-A2T provides higher memory capacity at the cost of added external PHY complexity, while LM3S2965-IQC50-A2T trades compact packaging for expanded I/O and parallel interface capability - both require PCB redesign and firmware adaptation due to non-identical pinouts and memory maps.
Availability
LM3S2432-IBZ50-A2T is available at Aetrix Electronics and suitable for industrial Ethernet gateways, HVAC controllers, networked motor drives, and smart energy meters requiring stable component supply across extended temperature ranges (-40°C to +105°C).
Supply support for LM3S2432-IBZ50-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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The LM3S2432-IBZ50-A2T belongs to the Stellaris family - TI's first-generation ARM Cortex-M3 MCUs designed specifically for deterministic real-time control in cost-sensitive industrial applications requiring integrated connectivity and motion control peripherals.
FAQ
What is the maximum operating frequency of the LM3S2432-IBZ50-A2T?
The LM3S2432-IBZ50-A2T operates at a maximum frequency of 50 MHz. This speed is achieved using the internal precision oscillator or an external crystal up to 25 MHz with PLL multiplication. The Cortex-M3 core delivers 1.25 DMIPS/MHz at this frequency, supporting real-time execution of complex control algorithms and protocol stacks without external acceleration.
Does the LM3S2432-IBZ50-A2T include an integrated Ethernet PHY?
Yes, the LM3S2432-IBZ50-A2T integrates a full 10/100 Ethernet PHY alongside the MAC, eliminating the need for an external PHY chip. This integration reduces BOM cost and PCB area while enabling IEEE 1588 hardware timestamping directly in the MAC+PHY block - critical for time-sensitive industrial networking applications requiring sub-microsecond synchronization accuracy.
How many ADC channels does the LM3S2432-IBZ50-A2T support, and what is their resolution and speed?
The LM3S2432-IBZ50-A2T features two independent 10-bit ADC modules, each with eight input channels and a maximum sampling rate of 1 MSPS. Both ADCs support simultaneous sampling and hardware triggering from timers or analog comparators - essential for synchronized current/voltage acquisition in motor control and power quality monitoring applications.
Is the LM3S2432-IBZ50-A2T pin-compatible with other Stellaris MCUs in the same package?
No, the LM3S2432-IBZ50-A2T is not pin-compatible with other Stellaris MCUs in 48-pin LQFP. While it shares the same package outline, its peripheral multiplexing (e.g., CAN2 on PA4/PA5, USB0 on PA6/PA7, Ethernet MII on PB0–PB7) differs from variants like LM3S3748 or LM3S6965. Board-level compatibility requires verification against the specific LM3S2432 datasheet (SPMS199D) and cannot be assumed across the family.
What development software support is available for the LM3S2432-IBZ50-A2T?
The LM3S2432-IBZ50-A2T is fully supported by Texas Instruments' StellarisWare software suite, including the royalty-free Stellaris Peripheral Driver Library (available in ROM), Stellaris USB Library, and Stellaris Graphics Library. TI provides Keil MDK-ARM, IAR Embedded Workbench, and GNU GCC toolchain support, along with example projects for Ethernet, CAN, USB, and motor control - all compatible with the LM3S2432-IBZ50-A2T out-of-the-box.
LM3S2432-IBZ50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not 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-IBZ50-A2T FAQ
1.How can I place an order for LM3S2432-IBZ50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2432-IBZ50-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-IBZ50-A2T reliable?
The price and inventory of LM3S2432-IBZ50-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-IBZ50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2432-IBZ50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2432-IBZ50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2432-IBZ50-A2T?
LM3S2432-IBZ50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2432-IBZ50-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-IBZ50-A2T?
For technical support, including LM3S2432-IBZ50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2432-IBZ50-A2T requirements.
6.How does Aetrix verify that LM3S2432-IBZ50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2432-IBZ50-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-IBZ50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2432-IBZ50-A2T?
All LM3S2432-IBZ50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2432-IBZ50-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-IBZ50-A2T part is unused and in its original packaging.
Return procedure for LM3S2432-IBZ50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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