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Texas Instruments LM3S6432-EBZ50-A2
- Part No.:
- LM3S6432-EBZ50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S6432-EBZ50-A2.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,192
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Product details
Overview
LM3S6432-EBZ50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated Ethernet MAC, dual UARTs, I²C, SSI, ADC (10-bit, 8-channel), PWM, and analog comparators. It operates at up to 50 MHz and supports industrial motor control and networked embedded systems.
For engineers reviewing the LM3S6432-EBZ50-A2 datasheet, LM3S6432-EBZ50-A2 pinout, LM3S6432-EBZ50-A2 application, or LM3S6432-EBZ50-A2 equivalent, key selection criteria include Ethernet MAC integration, 50 MHz operation, on-chip flash/SRAM size, peripheral set completeness (e.g., dual UART + I²C + SSI), and industrial temperature range support.
Technical Context
The LM3S6432-EBZ50-A2 implements the ARM Cortex-M3 core with NVIC, SysTick, and MPU, enabling deterministic real-time interrupt handling and memory protection. It integrates a full IEEE 802.3-compliant Ethernet MAC with MII interface and internal PHY support logic - no external PHY required for basic operation when paired with external magnetics.
Its analog subsystem includes an 8-channel, 10-bit SAR ADC with hardware averaging and two independent analog comparators with programmable reference. The PWM module provides six outputs with dead-band generation and fault protection, suitable for three-phase motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs Thumb-2 instructions for compact code and high efficiency |
| Max Clock Speed | 50 MHz - enables real-time control loops with sub-10 µs interrupt latency |
| Flash Memory | 256 KB - sufficient for bootloader, protocol stacks (e.g., TCP/IP), and application firmware |
| SRAM | 32 KB - supports Ethernet frame buffering, stack space, and real-time data buffers |
| Ethernet Interface | Integrated MAC with MII - eliminates need for external MAC IC; requires external PHY and magnetics |
| ADC | 10-bit, 8-channel SAR with 1 MSPS sample rate and hardware averaging - suitable for sensor monitoring and closed-loop feedback |
| PWM Outputs | 6-channel, 16-bit resolution with configurable dead time and fault shutdown - directly drives gate drivers in motor inverters |
Pinout & Package
LM3S6432-EBZ50-A2 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per TI SPMS130J datasheet Rev E.
| 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 ADC and PLL stability |
| PA0–PA7, PB0–PB7, etc. | GPIO banks A–G | Multi-function pins supporting UART, SSI, I²C, PWM, and ADC inputs - configurable per peripheral mapping |
| RMII0/1 | Ethernet MII/RMII interface | Dedicated 12-pin RMII group (TXD0/1, RXD0/1, REFCLK, CRS_DV, TXEN, RXER) for direct PHY connection |
| USB0VBUS, USB0ID | USB OTG interface | Supports device/host mode detection and VBUS sensing - requires external USB transceiver |
| XTAL, XTAL32 | Clock inputs | Primary 8–25 MHz crystal input for system clock; optional 32.768 kHz crystal for RTC |
Key Features
| Feature | Design Value |
|---|---|
| Ethernet MAC with MII/RMII | Reduces BOM count by integrating MAC logic - only external PHY and magnetics needed for full Ethernet connectivity |
| Hardware-accelerated PWM with fault protection | Enables safe, synchronized 3-phase motor drive with automatic shutdown on overcurrent or thermal fault signals |
| Programmable internal voltage reference for comparators | Eliminates need for external reference ICs - supports adaptive threshold detection in sensor interfaces |
| Integrated memory protection unit (MPU) | Allows runtime partitioning of flash/SRAM to isolate firmware, stack, and peripheral drivers - improves system robustness |
| Multiple low-power sleep modes with wake-on-peripheral | Supports <10 µA deep-sleep current with wake-up via GPIO, UART, or timer - extends battery life in remote nodes |
Applications
| Industrial Motor Control | Networked Sensor Node |
|---|---|
Use Scenario: Closed-loop control of BLDC or stepper motors in factory automation equipment with local HMI and remote diagnostics. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, managing gate driver PWM, reading current/voltage sensors via ADC, and communicating over Ethernet. Use Value: Integrated PWM with dead-band control and Ethernet MAC reduce component count and PCB area while enabling real-time motion coordination across networked PLCs. | Use Scenario: Environmental monitoring node deploying temperature, humidity, and vibration sensors in distributed industrial settings. IC Role / Device Role / Timing Role: Data aggregator and edge processor that samples sensors, applies filtering, packages data, and transmits via Ethernet to SCADA systems. Use Value: On-chip 256 KB flash stores firmware and protocol stacks (LwIP); 32 KB SRAM buffers multiple Ethernet frames and sensor history without external memory. |
| Building Automation Gateway | Energy Metering Interface |
Use Scenario: Protocol translation gateway connecting Modbus RTU field devices to BACnet/IP or SNMP-based building management systems. IC Role / Device Role / Timing Role: Dual-role processor running Modbus master/slave and TCP/IP stack simultaneously with deterministic UART-to-Ethernet bridging. Use Value: Two UARTs + I²C + Ethernet allow concurrent serial fieldbus communication and IP network reporting - no external bridge IC required. | Use Scenario: Smart electricity meter with pulse counting, voltage/current measurement, and remote firmware update capability. IC Role / Device Role / Timing Role: System-on-chip performing metrology calculations (via ADC), tamper detection (comparators), secure boot, and encrypted Ethernet updates. Use Value: Internal analog comparators detect line voltage sags/swells; hardware CRC and MPU support secure firmware validation and memory integrity checks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-IBZ50-A2 | Same core, 256 KB flash, but adds USB OTG controller and removes Ethernet MAC | Better suited for USB-hosted human interface devices; lacks native Ethernet for wired infrastructure | Select when USB connectivity outweighs Ethernet needs and PHY components are undesirable |
| TM4C123GH6PM | Successor family with same pinout, 256 KB flash, 32 KB SRAM, enhanced Ethernet MAC, and FPU option | Supports higher-level protocols (e.g., IPv6, TLS) and floating-point math for advanced control algorithms | Choose for new designs requiring extended lifecycle, enhanced security features, or future-proof protocol support |
Compared with LM3S6432-EBZ50-A2, LM3S6965-IBZ50-A2 trades Ethernet for USB OTG - ideal for portable or HID-centric systems - while TM4C123GH6PM offers architectural upgrades including FPU, improved Ethernet, and longer manufacturer support, making it preferable for long-lifecycle industrial deployments.
Availability
LM3S6432-EBZ50-A2 is available at Aetrix Electronics and suitable for industrial motor control, networked sensor nodes, building automation gateways, and energy metering interfaces requiring stable component supply and long-term availability assurance.
Supply support for LM3S6432-EBZ50-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 with emphasis on reliability, longevity, and industrial-grade performance.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications requiring integrated peripherals - especially Ethernet, motor control, and mixed-signal interfacing - before the TM4C migration.
FAQ
What is the operating temperature range for LM3S6432-EBZ50-A2?
The LM3S6432-EBZ50-A2 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per Texas Instruments' production data sheet SPMS130J and supports deployment in harsh environments such as factory floors, outdoor metering enclosures, and HVAC control panels where ambient conditions exceed commercial limits. The LM3S6432-EBZ50-A2 maintains full specification compliance across this range without derating.
Does LM3S6432-EBZ50-A2 include an integrated Ethernet PHY?
No, the LM3S6432-EBZ50-A2 integrates only the Ethernet MAC layer and supports MII/RMII physical interfaces. An external PHY IC (e.g., DP83848) and Ethernet magnetics are required for full 10/100 Mbps operation. The LM3S6432-EBZ50-A2 does not contain a PHY transceiver; its RMII interface drives differential signals to the external PHY, which handles line driving, signal encoding, and auto-negotiation.
What debug interface does LM3S6432-EBZ50-A2 support?
The LM3S6432-EBZ50-A2 supports JTAG and SWD (Serial Wire Debug) interfaces for programming and real-time debugging. Its Cortex-M3 core includes an Embedded Trace Macrocell (ETM) and SWO (Single Wire Output) trace port, enabling instruction tracing and variable watch without halting execution. TI's ICDI-based debuggers (e.g., Tiva C Series LaunchPad) and third-party tools like Segger J-Link fully support LM3S6432-EBZ50-A2 via standard ARM CMSIS-DAP protocols.
Can LM3S6432-EBZ50-A2 run the LwIP TCP/IP stack?
Yes, the LM3S6432-EBZ50-A2 has sufficient resources to run the lightweight LwIP TCP/IP stack in no-copy mode. With 32 KB of SRAM and integrated Ethernet MAC, it supports multiple concurrent sockets, DHCP, DNS, and HTTP server functionality - demonstrated in TI's official StellarisWare™ examples. The LM3S6432-EBZ50-A2's 50 MHz clock ensures adequate throughput for 10 Mbps Ethernet applications without requiring external memory.
Is LM3S6432-EBZ50-A2 pin-compatible with any newer TI microcontrollers?
The LM3S6432-EBZ50-A2 is not pin-compatible with newer TM4C devices despite shared footprint families - the TM4C123GH6PM uses identical 100-pin LQFP packaging but differs in power sequencing, reset behavior, and peripheral register mapping. While migration paths exist, board-level changes (e.g., decoupling, reset circuit, and clock configuration) are required. TI documents the LM3S6432-EBZ50-A2 as legacy; no drop-in replacements are offered.
LM3S6432-EBZ50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 6000
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- Ethernet, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 43
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S6432-EBZ50-A2 FAQ
1.How can I place an order for LM3S6432-EBZ50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S6432-EBZ50-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 LM3S6432-EBZ50-A2 reliable?
The price and inventory of LM3S6432-EBZ50-A2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S6432-EBZ50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S6432-EBZ50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S6432-EBZ50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S6432-EBZ50-A2?
LM3S6432-EBZ50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S6432-EBZ50-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 LM3S6432-EBZ50-A2?
For technical support, including LM3S6432-EBZ50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S6432-EBZ50-A2 requirements.
6.How does Aetrix verify that LM3S6432-EBZ50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S6432-EBZ50-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 LM3S6432-EBZ50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S6432-EBZ50-A2?
All LM3S6432-EBZ50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S6432-EBZ50-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 LM3S6432-EBZ50-A2 part is unused and in its original packaging.
Return procedure for LM3S6432-EBZ50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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