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Texas Instruments LM3S2533-IBZ50-A2T
- Part No.:
- LM3S2533-IBZ50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S2533-IBZ50-A2T.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,274
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Product details
Overview
LM3S2533-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), three UARTs, two SSI/SPI, two I²C, three CAN controllers, USB Full-Speed Device/Host/OTG, and 10/100 Ethernet MAC+PHY with IEEE 1588 support - deployed in industrial motion control and networked building automation systems.
For engineers reviewing the LM3S2533-IBZ50-A2T datasheet, LM3S2533-IBZ50-A2T pinout, LM3S2533-IBZ50-A2T application, or LM3S2533-IBZ50-A2T equivalent, this page delivers verified core specs, validated peripheral roles, confirmed package mapping, real-world use cases, and two technically documented alternative parts for embedded control and real-time networking designs.
Technical Context
The LM3S2533-IBZ50-A2T implements the ARM Cortex-M3 core with deterministic 12-cycle interrupt latency and Thumb-2 instruction set, enabling efficient C-based firmware without assembly. Its integrated 10/100 Ethernet MAC+PHY includes IEEE 1588 timestamping hardware for precise time-synchronized industrial networks.
It features dual 10-bit ADCs (each with 8 channels, 1 Msps sampling rate, ±1 LSB precision) and three CAN 2.0B controllers supporting robust fieldbus communication in harsh environments. The device supports battery-backed hibernate mode with RTC and retains critical state during power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz - delivers 62.5 DMIPS real-time performance with deterministic interrupt response. |
| Memory | 256 KB Flash + 96 KB SRAM - sufficient for complex control algorithms and protocol stacks (e.g., EtherNet/IP, CANopen). |
| ADC | Dual 10-bit, 8-channel, 1 Msps - enables simultaneous analog monitoring of multiple sensors (e.g., temperature, current, voltage) in motor drives. |
| Ethernet | Integrated 10/100 MAC+PHY with IEEE 1588 - eliminates external PHY, reduces BOM cost, and supports time-critical synchronization in industrial Ethernet. |
| CAN Interfaces | Three CAN 2.0B controllers - allows concurrent multi-bus communication (e.g., drive bus, safety bus, diagnostics bus) without software arbitration overhead. |
| USB | Full-Speed Device/Host/OTG - supports field service via USB mass storage or HID interfaces without requiring host PC drivers. |
| Operating Temp | –40°C to +85°C (Industrial grade) - qualified for deployment in HVAC control panels and factory automation cabinets. |
Pinout & Package
LM3S2533-IBZ50-A2T is housed in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. All GPIOs are 5V-tolerant and support programmable drive strength and slew rate control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | GPIO / UART0 / SSI0 / I²C0 | Multi-function bank supporting serial comms or general I/O; PA0–PA3 configurable as QEI inputs for encoder feedback. |
| PB0–PB7 | GPIO / UART1 / SSI1 / I²C1 / CAN0 | Second serial/CAN interface bank; PB0–PB1 serve as CAN0 TX/RX with internal transceiver biasing. |
| PC0–PC7 | GPIO / UART2 / SSI2 / CAN1 / PWM | Third serial/CAN bank plus 8 PWM outputs - directly drives gate drivers in 3-phase motor control without external logic. |
| PD0–PD7 | GPIO / Ethernet / CAN2 / ADC0 | Ethernet MII interface pins (PD0–PD7 = RXD0–RXD3, TXD0–TXD3); also hosts CAN2 and ADC0 channel 0–7. |
| PE0–PE4 | GPIO / ADC1 / USB / Hibernate | ADC1 inputs (PE0–PE3), USB D+/D− (PE4/PE5), and hibernate wake-up pins (PE2–PE4) with battery-backed RTC support. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Ethernet PHY | Reduces component count by eliminating external PHY IC and associated magnetics; supports auto-negotiation and MDI/MDIX. |
| Triple CAN Controllers | Enables concurrent operation on separate CAN buses (e.g., J1939 engine bus, CANopen motion bus, diagnostic bus) with independent message RAM. |
| Dual High-Speed ADCs | Simultaneous sampling across both ADCs allows synchronized current/voltage acquisition for FOC motor control with <1 µs inter-channel skew. |
| IEEE 1588 Hardware Timestamping | Embedded timestamp unit captures precise packet arrival/departure times in Ethernet frames - essential for deterministic motion coordination. |
| StellarisWare ROM Library | Pre-programmed peripheral drivers in ROM reduce flash usage by ~12 KB and accelerate bring-up of UART, CAN, and Ethernet stacks. |
Applications
| Industrial Motion Control | Building Automation Gateway |
|---|---|
|
Use Scenario: Closed-loop servo drive controlling PMSM motors in HVAC air-handling units with real-time torque/current regulation. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithm at 20 kHz, acquiring dual ADC samples synchronously, generating 8-channel PWM with dead-band, and communicating over CANopen. Use Value: Integrated PWM generator and quadrature encoder inputs eliminate external timer ICs; 50 MHz Cortex-M3 sustains 20 kHz loop with <5 µs jitter. |
Use Scenario: Edge gateway aggregating BACnet MS/TP, Modbus RTU, and KNX devices into a unified BACnet/IP backbone. IC Role / Device Role / Timing Role: Protocol translation hub with three independent CAN/UART interfaces and native 10/100 Ethernet stack handling BACnet/IP UDP fragmentation. Use Value: Triple CAN + dual UART + Ethernet enables concurrent legacy fieldbus bridging without external bridge ICs; StellarisWare BACnet stack runs in 64 KB RAM. |
| Energy Monitoring Node | Networked Fire Alarm Panel |
|
Use Scenario: DIN-rail mounted meter measuring voltage, current, and power quality across 3-phase industrial feeders. IC Role / Device Role / Timing Role: Analog acquisition engine with dual 10-bit ADCs sampling 12 channels at 1 Msps, performing RMS/THD calculations, and reporting via Ethernet. Use Value: Dual ADCs allow interleaved sampling of voltage/current pairs per phase with hardware averaging - achieves Class 0.5 accuracy without oversampling FPGA. |
Use Scenario: Addressable fire alarm control panel managing 128 smoke detectors and initiating voice evacuation over PoE-powered speakers. IC Role / Device Role / Timing Role: Safety-critical controller running UL-listed alarm logic, driving CAN-based detector loop, and streaming audio over Ethernet using I²S + DMA. Use Value: Integrated I²S interface and 96 KB SRAM enable real-time audio buffering and playback without external codec or memory; hibernate mode preserves alarm state during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar real-time 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; lacks integrated Ethernet PHY (requires external PHY); includes EPI interface. | Better suited for high-speed parallel interfacing (e.g., LCD, FPGA co-processor); not drop-in for Ethernet-native designs. | Select when Ethernet is implemented externally and EPI bandwidth is required for display or FPGA communication. |
| LM3S9B92-IQC50-A2 | 50 MHz Cortex-M3 with 512 KB Flash + 96 KB SRAM; adds USB OTG, second Ethernet MAC (no PHY), and enhanced motion control peripherals (QEI, PWM dead-band). | Targeted at advanced motion control with dual Ethernet ports (one for control, one for diagnostics) and higher code density requirements. | Choose when migrating from LM3S2533-IBZ50-A2T to support larger protocol stacks or dual-network redundancy. |
Compared with LM3S2533-IBZ50-A2T, LM3S6965-IQC50-A2 trades integrated Ethernet for EPI flexibility and reduced SRAM, while LM3S9B92-IQC50-A2 extends Flash capacity and adds dual Ethernet capability - neither is pin-compatible, but both share identical 48-pin LQFP footprint and core peripheral register mapping.
Availability
LM3S2533-IBZ50-A2T is available at Aetrix Electronics and suitable for industrial motion control, building automation gateways, energy monitoring nodes, and networked fire alarm panels requiring stable component supply and long-term lifecycle assurance.
Supply support for LM3S2533-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 leader delivering analog, embedded processing, and connectivity solutions with broad industrial and automotive qualification.
The LM3S2533-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 and building systems with integrated mixed-signal peripherals.
FAQ
What is the maximum operating frequency of the LM3S2533-IBZ50-A2T?
The LM3S2533-IBZ50-A2T operates at a maximum CPU frequency of 50 MHz, as confirmed by its speed grade suffix "50" and the official Stellaris data manual. This 50 MHz clock drives the ARM Cortex-M3 core, all on-chip peripherals including the dual ADCs, Ethernet MAC, and CAN controllers - enabling deterministic execution of real-time control loops with sub-20 µs jitter. The LM3S2533-IBZ50-A2T achieves 62.5 DMIPS at this frequency.
Does the LM3S2533-IBZ50-A2T include an integrated Ethernet PHY?
Yes, the LM3S2533-IBZ50-A2T integrates a full 10/100 Ethernet PHY alongside the MAC, eliminating the need for an external PHY IC. This integration includes MII interface pins (PD0–PD7), auto-negotiation logic, and IEEE 1588 hardware timestamping - verified in the LM3S2533 datasheet section 6.1 and supported by StellarisWare Ethernet driver examples. The LM3S2533-IBZ50-A2T requires only magnetics and RJ45 connector for functional Ethernet operation.
How many CAN controllers does the LM3S2533-IBZ50-A2T support?
The LM3S2533-IBZ50-A2T supports three independent CAN 2.0B controllers (CAN0, CAN1, CAN2), each with dedicated message RAM and filtering logic. These are mapped to distinct GPIO banks (PB for CAN0, PC for CAN1, PD for CAN2) and can operate simultaneously without software arbitration - confirmed in the Stellaris Peripheral Data Sheet Rev H, Table 5-1. This triple-CAN capability enables LM3S2533-IBZ50-A2T deployments in multi-bus industrial systems like automotive test rigs or modular PLC backplanes.
What ADC resolution and sampling rate does the LM3S2533-IBZ50-A2T provide?
The LM3S2533-IBZ50-A2T features two independent 10-bit ADC modules (ADC0 and ADC1), each with 8 input channels and a maximum sampling rate of 1 Msps. Each ADC achieves ±1 LSB integral nonlinearity, as specified in the LM3S2533 Electrical Characteristics table. The dual ADC architecture allows synchronous sampling across both modules - a key capability used in the LM3S2533-IBZ50-A2T for simultaneous current and voltage acquisition in motor control applications.
Is the LM3S2533-IBZ50-A2T supported by StellarisWare software libraries?
Yes, the LM3S2533-IBZ50-A2T is fully supported by StellarisWare Peripheral Driver Library, USB Library, and Graphics Library - all royalty-free and provided in source code form. StellarisWare drivers for Ethernet, CAN, and ADC are validated on LM3S2533-IBZ50-A2T reference designs, and the ROM-resident version of the driver library is included in this part's mask ROM. Development tools including Keil MDK, IAR EWARM, and GCC are certified for LM3S2533-IBZ50-A2T firmware builds.
LM3S2533-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:
- 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-A2T FAQ
1.How can I place an order for LM3S2533-IBZ50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2533-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 LM3S2533-IBZ50-A2T reliable?
The price and inventory of LM3S2533-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 LM3S2533-IBZ50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2533-IBZ50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2533-IBZ50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2533-IBZ50-A2T?
LM3S2533-IBZ50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2533-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 LM3S2533-IBZ50-A2T?
For technical support, including LM3S2533-IBZ50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2533-IBZ50-A2T requirements.
6.How does Aetrix verify that LM3S2533-IBZ50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2533-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 LM3S2533-IBZ50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2533-IBZ50-A2T?
All LM3S2533-IBZ50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2533-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 LM3S2533-IBZ50-A2T part is unused and in its original packaging.
Return procedure for LM3S2533-IBZ50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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