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Texas Instruments LM3S2533-IBZ50-A2
- Part No.:
- LM3S2533-IBZ50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S2533-IBZ50-A2.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,720
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Product details
Overview
LM3S2533-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, 3 CAN controllers, USB Full-Speed Device/Host/OTG, and 10/100 Ethernet MAC+PHY with IEEE 1588 support-designed for real-time industrial motion control and networked building automation systems.
For engineers reviewing the LM3S2533-IBZ50-A2 datasheet, LM3S2533-IBZ50-A2 pinout, LM3S2533-IBZ50-A2 application, or LM3S2533-IBZ50-A2 equivalent, key selection criteria include deterministic 12-cycle interrupt latency, 5V-tolerant GPIOs with programmable drive strength, hardware quadrature encoder inputs, dead-band PWM generation, and ROM-based Stellaris Peripheral Driver Library support for rapid C-based firmware development.
Technical Context
The LM3S2533-IBZ50-A2 implements the ARM Cortex-M3 core with Thumb-2 instruction set, delivering 1.25 DMIPS/MHz performance and deterministic interrupt response (12 cycles standard, 6 with tail-chaining). It features a precision oscillator, two watchdog timers, and system-level peripherals including systick timer, NVIC, and SWD/JTAG debug interface.
Its analog subsystem includes two independent 10-bit ADCs each with 8 input channels and 1 Msps sampling rate, plus three analog comparators and an internal temperature sensor. Motion control capability is enabled by two quadrature encoder inputs, eight PWM outputs with dead-band generator, and dedicated CCP timers supporting advanced motor commutation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max - enables deterministic real-time task scheduling and efficient C/C++ execution without assembly glue code. |
| Memory | 256 KB Flash + 96 KB SRAM - supports complex control algorithms and protocol stacks (e.g., TCP/IP, CANopen) with room for field-upgradable firmware. |
| ADC | Dual 10-bit, 8-channel, 1 Msps - allows simultaneous sampling of multiple sensor inputs (e.g., current, voltage, temperature) in motor drives. |
| Communication | 3×UART, 2×SSI/SPI, 3×CAN, USB FS Device/Host/OTG, 10/100 Ethernet MAC+PHY - enables multi-protocol connectivity in industrial gateways and networked controllers. |
| Motion Control | 2×QEI inputs, 8×PWM outputs with dead-band, 4×32-bit timers - provides hardware-accelerated position/speed feedback and precise gate-drive timing for BLDC/PMSM inverters. |
| I/O | Up to 40 GPIOs, all 5V-tolerant, interrupt-capable, with programmable slew rate and drive strength - simplifies interface to legacy 5V logic and reduces external level-shifting components. |
| Debug | JTAG/SWD interface with SWO trace - supports non-intrusive real-time debugging and performance profiling in safety-critical embedded applications. |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply rails | VDD (digital core), VDDA (analog), VDDC (USB PHY) - require separate decoupling for noise-sensitive mixed-signal operation. |
| GND, GNDA, GNDC | Ground references | Isolated ground domains prevent analog measurement corruption from digital switching noise. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE4 | GPIO banks | 5V-tolerant bidirectional I/O with configurable pull-up/down, slew rate, and drive strength - usable as general-purpose signals or peripheral function pins. |
| U0RX/U0TX, U1RX/U1TX, U2RX/U2TX | UART serial interfaces | Three independent full-duplex UARTs - support RS-232/RS-485 transceivers, Modbus RTU, or debug console output. |
| SSI0CLK/SS0FSS/SSI0RX/SSI0TX, SSI1CLK/SSI1FSS/SSI1RX/SSI1TX | Synchronous serial interfaces | Two independent SPI/SSI ports - connect to sensors, displays, or external memory with flexible clock polarity/phase configuration. |
| CAN0RX/CAN0TX, CAN1RX/CAN1TX, CAN2RX/CAN2TX | CAN bus transceiver interfaces | Three isolated CAN controllers - enable multi-bus automotive or industrial networking (e.g., J1939, CANopen master/slave nodes). |
| USB0VBUS/USB0ID/USB0DP/USB0DM | USB Full-Speed physical layer | Integrated USB PHY with VBUS detection and ID pin - supports device, host, or OTG roles without external transceiver. |
| EMAC0MDIO/EMAC0MDC/EMAC0RX0/EMAC0RX1/EMAC0TX0/EMAC0TX1/EMAC0CRS/EMAC0COL | Ethernet MAC+PHY interface | 10/100 Ethernet with IEEE 1588 timestamping - enables hard real-time industrial Ethernet protocols (e.g., EtherCAT slave, PROFINET IRT). |
| Q0PHASE0/Q0PHASE1, Q1PHASE0/Q1PHASE1 | Quadrature encoder inputs | Dedicated hardware QEI capture - directly measures rotary encoder position/speed without CPU intervention, reducing jitter in closed-loop control. |
| PWM0–PWM7 | Pulse-width modulation outputs | Eight PWM outputs with configurable dead-band insertion - generate complementary gate-drive signals for 3-phase inverter bridges with shoot-through protection. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based Stellaris Peripheral Driver Library | Pre-integrated driver suite in read-only memory - eliminates flash usage overhead and guarantees consistent peripheral initialization across firmware versions. |
| Deterministic interrupt latency | Fixed 12-cycle response (6 with tail-chaining) - ensures predictable worst-case timing for safety-critical control loops (e.g., motor overcurrent shutdown). |
| Hardware motion control block | QEI + PWM + dead-band generator + CCP timers - offloads position feedback processing and gate timing from CPU, freeing cycles for higher-layer algorithms. |
| IEEE 1588-capable Ethernet MAC+PHY | Hardware timestamping on RX/TX frames - enables sub-microsecond time synchronization for distributed control systems and synchronized data acquisition. |
| 5V-tolerant GPIO with programmable drive | Configurable 2/4/8 mA drive strength and slew rate - directly interfaces to industrial sensors, relays, and optocouplers without external buffers. |
Applications
| Industrial Motor Drive | Building Automation Gateway |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors and fan arrays. IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithm, capturing encoder feedback via QEI, generating gated PWM with dead-band, and communicating status over CAN. Use Value: Hardware QEI and PWM blocks reduce CPU load by >40% versus software-based timing, enabling 20 kHz PWM carrier frequency with 1 µs jitter tolerance. | Use Scenario: Protocol translation between BACnet MS/TP (RS-485) and BACnet/IP (Ethernet) in smart building controllers. IC Role / Device Role / Timing Role: Dual-protocol gateway MCU managing concurrent CAN, UART, and Ethernet stacks while running real-time scheduler for sensor polling and alarm handling. Use Value: Integrated 10/100 Ethernet MAC+PHY with IEEE 1588 support enables precise time-stamped event logging and synchronized actuator commands across distributed HVAC zones. |
| Factory Automation PLC Node | Medical Infusion Pump Controller |
Use Scenario: Compact remote I/O module collecting analog sensor data and driving solenoid valves in packaging machinery. IC Role / Device Role / Timing Role: Deterministic real-time controller acquiring 8-channel ADC samples at 100 kSPS, executing PID loops, and updating digital outputs with <10 µs jitter. Use Value: Dual 10-bit ADCs with 1 Msps aggregate throughput allow oversampling and noise rejection for high-accuracy pressure/flow measurements in harsh EMI environments. | Use Scenario: Safety-critical drug delivery system requiring redundant flow monitoring and motor control with fault logging. IC Role / Device Role / Timing Role: Primary controller managing stepper motor positioning, pressure sensing, occlusion detection, and USB-connected diagnostic logging. Use Value: ROM-based Stellaris Peripheral Driver Library ensures certified, repeatable peripheral behavior across production batches-critical for FDA-regulated firmware validation. |
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 Cortex-M3 core, 50 MHz, but 256 KB Flash + 64 KB SRAM; adds 10/100 Ethernet MAC only (no integrated PHY); no USB OTG support. | Lacks integrated Ethernet PHY and USB OTG - requires external PHY chip and limits host-side peripheral attachment. | Select when Ethernet connectivity is required but PHY integration is unnecessary, and USB host functionality is not needed. |
| LM3S8962-IQC50-A2 | Same package and speed; 256 KB Flash + 96 KB SRAM; adds IEEE 1588 Ethernet MAC+PHY and USB OTG - identical analog/motion peripherals. | Functionally superset with identical pinout and memory map - supports same firmware with enhanced IEEE 1588 timestamping resolution. | Choose for new designs needing tighter time synchronization (e.g., distributed motion control networks) where LM3S2533-IBZ50-A2's IEEE 1588 capability is insufficient. |
Compared with LM3S6965-IQC50-A2, LM3S2533-IBZ50-A2 offers integrated Ethernet PHY and USB OTG for reduced BOM cost and smaller PCB area; compared with LM3S8962-IQC50-A2, it provides identical core functionality at lower unit cost where ultra-precise IEEE 1588 timing is not required.
Availability
LM3S2533-IBZ50-A2 is available at Aetrix Electronics and suitable for industrial motor drives, building automation gateways, and factory automation PLC nodes requiring stable component supply and long-term manufacturing continuity.
Supply support for LM3S2533-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 LM3S2533-IBZ50-A2 belongs to the Stellaris family of ARM Cortex-M3 MCUs, engineered for cost-conscious real-time control applications demanding high integration, deterministic performance, and industrial-grade reliability in motion control and networked systems.
FAQ
What is the maximum operating frequency of the LM3S2533-IBZ50-A2?
The LM3S2533-IBZ50-A2 operates at a maximum CPU frequency of 50 MHz, achieved using the internal precision oscillator or external crystal. This speed is validated across the full industrial temperature range (–40°C to +85°C) and supports deterministic real-time execution of control algorithms with sub-microsecond timing resolution.
Does the LM3S2533-IBZ50-A2 include an integrated Ethernet PHY?
Yes, the LM3S2533-IBZ50-A2 integrates a full 10/100 Ethernet MAC and PHY in a single die, eliminating the need for external PHY components. It supports IEEE 1588 Precision Time Protocol with hardware timestamping on both transmit and receive frames, enabling sub-microsecond synchronization in distributed control networks.
How many analog-to-digital converters does the LM3S2533-IBZ50-A2 have, and what are their specifications?
The LM3S2533-IBZ50-A2 includes two independent 10-bit successive-approximation ADCs, each with 8 input channels and a maximum sampling rate of 1 Msps. Both ADCs support simultaneous sampling, hardware-triggered conversions, and programmable sample-and-hold timing - critical for synchronized current/voltage sensing in motor control applications.
Is the LM3S2533-IBZ50-A2 pin-compatible with other Stellaris MCUs in the 48-pin LQFP package?
No, the LM3S2533-IBZ50-A2 has a unique pinout optimized for its integrated Ethernet PHY and triple CAN interface. While it shares the 48-pin LQFP footprint with other LM3S devices like LM3S6965, signal assignments differ significantly - particularly for EMAC, CAN, and USB functions - requiring PCB redesign for substitution.
What development software support is provided for the LM3S2533-IBZ50-A2?
Texas Instruments provides the royalty-free StellarisWare software suite for the LM3S2533-IBZ50-A2, including the Peripheral Driver Library (available in ROM), USB Library, Graphics Library, and complete example projects. All libraries are written in ANSI C, support ARM/Keil, IAR, and GNU toolchains, and include source code for customization and certification documentation.
LM3S2533-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:
- 48
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 64K 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:
LM3S2533-IBZ50-A2 FAQ
1.How can I place an order for LM3S2533-IBZ50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2533-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 LM3S2533-IBZ50-A2 reliable?
The price and inventory of LM3S2533-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 LM3S2533-IBZ50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2533-IBZ50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2533-IBZ50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2533-IBZ50-A2?
LM3S2533-IBZ50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2533-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 LM3S2533-IBZ50-A2?
For technical support, including LM3S2533-IBZ50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2533-IBZ50-A2 requirements.
6.How does Aetrix verify that LM3S2533-IBZ50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2533-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 LM3S2533-IBZ50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2533-IBZ50-A2?
All LM3S2533-IBZ50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2533-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 LM3S2533-IBZ50-A2 part is unused and in its original packaging.
Return procedure for LM3S2533-IBZ50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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