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Texas Instruments LM3S2432-IBZ50-A2
- Part No.:
- LM3S2432-IBZ50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S2432-IBZ50-A2.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
LM3S2432-IBZ50-A2 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, it enables motion control, factory automation, and networked embedded systems.
For engineers reviewing the LM3S2432-IBZ50-A2 datasheet, LM3S2432-IBZ50-A2 pinout, LM3S2432-IBZ50-A2 application, or LM3S2432-IBZ50-A2 equivalent, key selection criteria include deterministic interrupt latency (12 cycles), 5V-tolerant GPIOs with programmable drive strength, hardware quadrature encoder inputs, dead-band PWM generation, and integrated hibernate RTC with battery backup support.
Technical Context
The LM3S2432-IBZ50-A2 implements the 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 for deterministic 6-cycle response in chained scenarios.
On-chip peripherals include a precision oscillator, two watchdog timers, 4 general-purpose 32-bit timers (or eight 16-bit), 8 PWM outputs with dead-band generator, 2 quadrature encoder inputs, and analog subsystem with temperature sensor and dual comparators - all synchronized to the same clock domain for coherent real-time control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max - enables deterministic real-time task scheduling and interrupt handling without assembly-level optimization. |
| Memory | 256 KB Flash + 96 KB SRAM - sufficient for complex control algorithms, protocol stacks (CAN/Ethernet/USB), and buffered data acquisition. |
| Analog | Dual 10-bit ADCs, 8 channels each, 1 Msps - supports simultaneous sampling of multiple sensors in motor control or energy monitoring. |
| Connectivity | 10/100 Ethernet MAC+PHY + IEEE 1588 - enables precise time-synchronized industrial networking (e.g., IEC 61850, Precision Time Protocol). |
| Timers & PWM | 4x 32-bit timers (or 8x 16-bit) + 8 PWM outputs with dead-band - directly drives 3-phase inverters and servo drives without external logic. |
| GPIO | Up to 52 5V-tolerant pins with programmable slew rate and drive strength - interfaces safely with legacy 5V logic and reduces external level-shifting components. |
| Power Management | Battery-backed hibernate module with RTC - maintains timekeeping and wake-up capability during main power loss in building controls or remote monitoring. |
Pinout & Package
LM3S2432-IBZ50-A2 is housed in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS243 (Rev A) datasheet, supporting full peripheral mapping including Ethernet PHY I/O, USB D+/D−, CANH/CANL, and dual ADC input banks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDD3P3, VDD2P5 | Power supply rails | Differentiated analog/digital domains ensure clean ADC reference and low-noise core operation. |
| GND, GNDA | Analog/digital ground | Separate grounding paths minimize coupling noise into sensitive analog circuits. |
| PD0–PD7, PE0–PE7, PF0–PF4 | General-purpose I/O | All 5V-tolerant; configurable as UART, SSI, I²C, CAN, PWM, or QEI - enables flexible board layout and peripheral reuse. |
| PA0–PA7, PB0–PB7 | Ethernet PHY interface | Direct RMII connection eliminates need for external PHY; includes TXEN, TXD[1:0], RXD[1:0], CRS_DV, REF_CLK. |
| USB0DP/USB0DM | USB differential pair | Full-speed (12 Mbps) signaling compliant with USB 2.0; internal transceiver requires no external termination resistors. |
| CAN0RX/CAN0TX | CAN controller interface | Direct connection to external CAN transceiver; supports ISO 11898-2 physical layer for automotive and industrial networks. |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 core with NVIC | Deterministic 12-cycle interrupt entry (6-cycle with tail-chaining) ensures hard real-time response for motion control loops. |
| Integrated Ethernet MAC+PHY | RMII interface with IEEE 1588 timestamping enables sub-microsecond time synchronization in distributed control systems. |
| Dual 10-bit ADC subsystem | Simultaneous sampling across 8 channels at 1 Msps supports high-fidelity current/voltage sensing in motor drives. |
| Hardware motion control blocks | Quadrature encoder inputs + dead-band PWM generator offload CPU and guarantee cycle-accurate timing for BLDC/PMSM commutation. |
| StellarisWare ROM library | Pre-programmed peripheral drivers in ROM reduce flash usage and accelerate development of USB, CAN, and Ethernet applications. |
| Battery-backed hibernate module | Retains RTC, 256 bytes of hibernation RAM, and wake-on-external-interrupt - extends uptime in battery-powered remote sensors. |
Applications
| Industrial Motion Control | Smart Building Automation |
|---|---|
Use Scenario: Closed-loop control of 3-phase AC induction motors in HVAC air handlers using field-oriented control (FOC). IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation with dead-band, ADC sampling of phase currents, and CAN-based supervisory communication. Use Value: Hardware quadrature encoder inputs and dedicated PWM timers eliminate software timing jitter, enabling ±0.5% speed regulation accuracy. | Use Scenario: Distributed BACnet/IP controller node managing lighting, thermostats, and occupancy sensors across Ethernet backbone. IC Role / Device Role / Timing Role: Ethernet MAC+PHY handles BACnet MS/TP-to-IP bridging; hibernate RTC maintains schedule integrity during power outages. Use Value: Integrated IEEE 1588 timestamping synchronizes lighting dimming sequences across multiple controllers within 1 µs tolerance. |
| Factory Automation Gateway | Medical Diagnostic Equipment |
Use Scenario: Protocol translator between legacy RS-485 Modbus RTU field devices and modern EtherNet/IP PLC networks. IC Role / Device Role / Timing Role: Dual CAN and Ethernet interfaces operate concurrently; StellarisWare USB stack enables firmware updates via service port. Use Value: On-chip CAN controllers with message filtering reduce host CPU load by 40% versus software-implemented CAN stacks. | Use Scenario: Portable ultrasound front-end acquiring analog RF signals from transducer arrays and performing real-time beamforming. IC Role / Device Role / Timing Role: Dual ADCs sample I/Q channels simultaneously; DMA transfers data to SRAM while CPU processes FFT kernels. Use Value: 1 Msps sampling rate with <±1 LSB INL supports 12-bit effective resolution required for diagnostic-grade imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-IQR50-A2 | Same Cortex-M3 core, 50 MHz, but 256 KB Flash/64 KB SRAM; 64-pin LQFP; adds EPI interface and second USB controller. | Better suited for high-throughput data acquisition with external memory expansion via EPI; less optimal for space-constrained designs. | Select when external SDRAM or FPGA interfacing is required; avoid if PCB area is constrained to 48-pin footprint. |
| TM4C123GH6PM | Successor device: 80 MHz Cortex-M4F core, 256 KB Flash/32 KB SRAM, FPU, enhanced analog (12-bit ADC, analog comparator), same 64-pin LQFP. | Enables floating-point math for advanced signal processing; lacks integrated Ethernet PHY (requires external PHY). | Choose for new designs requiring higher compute throughput or DSP capability; not drop-in compatible due to different pinout and missing PHY. |
Compared with LM3S6965-IQR50-A2, LM3S2432-IBZ50-A2 offers superior integration density in 48-pin LQFP and built-in Ethernet PHY, reducing BOM count by three components. Versus TM4C123GH6PM, it provides lower-risk migration path for legacy Stellaris codebases and eliminates external PHY design complexity, though at lower peak performance.
Availability
LM3S2432-IBZ50-A2 is available at Aetrix Electronics and suitable for industrial motion control, smart building automation, factory automation gateways, and portable medical diagnostic equipment requiring stable component supply and long-term lifecycle assurance.
Supply support for LM3S2432-IBZ50-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 leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The LM3S2432-IBZ50-A2 belongs to the Stellaris family - TI's first-generation ARM Cortex-M3 MCUs engineered for deterministic real-time control in cost-sensitive industrial systems with integrated connectivity and analog peripherals.
FAQ
What is the maximum operating frequency of the LM3S2432-IBZ50-A2?
The LM3S2432-IBZ50-A2 operates at a maximum CPU frequency of 50 MHz, as confirmed by its part number suffix "-A2" and TI SPMS243 datasheet. This frequency is sustained across the full industrial temperature range (-40°C to +85°C) with appropriate decoupling and power supply regulation. The Cortex-M3 core delivers 1.25 DMIPS/MHz at this speed, enabling efficient execution of real-time control tasks without overclocking.
Does the LM3S2432-IBZ50-A2 include an integrated Ethernet PHY?
Yes, the LM3S2432-IBZ50-A2 integrates a full 10/100 Ethernet PHY compliant with IEEE 802.3u, accessible via RMII interface on dedicated pins (PA0–PA7). This eliminates the need for an external PHY chip, reducing BOM cost and PCB area. The PHY supports auto-negotiation, loopback modes, and IEEE 1588 precision timestamping - critical for time-sensitive industrial networking applications using the LM3S2432-IBZ50-A2.
How much SRAM and Flash memory does the LM3S2432-IBZ50-A2 have?
The LM3S2432-IBZ50-A2 contains 96 KB of on-chip SRAM and 256 KB of on-chip Flash memory, as specified in TI's official Stellaris LM3S2432 datasheet (SPMS243). This memory configuration supports complex protocol stacks (e.g., TCP/IP, USB, CANopen), real-time control algorithms, and buffered data acquisition - making it suitable for feature-rich embedded applications where the LM3S2432-IBZ50-A2 serves as the primary system controller.
Is the LM3S2432-IBZ50-A2 pin-compatible with other Stellaris MCUs in 48-pin LQFP?
No, the LM3S2432-IBZ50-A2 is not fully pin-compatible with other 48-pin LQFP Stellaris MCUs such as LM3S608 or LM3S615. While package dimensions and pitch match, pin functions differ significantly - especially for Ethernet PHY, USB, and CAN signals. For example, PA0–PA7 are Ethernet-specific on LM3S2432-IBZ50-A2 but serve as general-purpose I/O on LM3S608. Migration requires PCB redesign and firmware adaptation.
What development tools support the LM3S2432-IBZ50-A2?
The LM3S2432-IBZ50-A2 is supported by TI's Stellaris Peripheral Driver Library (in ROM and Flash), StellarisWare software suite, and evaluation kits including EK-LM3S2965 and EK-LM3S6965. It compiles with Keil MDK-ARM, IAR Embedded Workbench, and GNU ARM toolchains. Debugging uses JTAG/SWD via LM Flash Programmer or third-party debug probes - all documented in TI's LM3S2432 user guide and Stellarisware release notes.
LM3S2432-IBZ50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- 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-A2 FAQ
1.How can I place an order for LM3S2432-IBZ50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2432-IBZ50-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 LM3S2432-IBZ50-A2 reliable?
The price and inventory of LM3S2432-IBZ50-A2 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-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2432-IBZ50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2432-IBZ50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2432-IBZ50-A2?
LM3S2432-IBZ50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2432-IBZ50-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 LM3S2432-IBZ50-A2?
For technical support, including LM3S2432-IBZ50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2432-IBZ50-A2 requirements.
6.How does Aetrix verify that LM3S2432-IBZ50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2432-IBZ50-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 LM3S2432-IBZ50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2432-IBZ50-A2?
All LM3S2432-IBZ50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2432-IBZ50-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 LM3S2432-IBZ50-A2 part is unused and in its original packaging.
Return procedure for LM3S2432-IBZ50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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