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Texas Instruments LM3S8530-EQC50-A2T
- Part No.:
- LM3S8530-EQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S8530-EQC50-A2T.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,123
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Product details
Overview
LM3S8530-EQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN, Ethernet MAC, UART, I²C, SSI, PWM, and ADC peripherals, operating at 50 MHz for real-time industrial control applications.
For engineers reviewing the LM3S8530-EQC50-A2T datasheet, LM3S8530-EQC50-A2T pinout, LM3S8530-EQC50-A2T application, or LM3S8530-EQC50-A2T equivalent, key selection criteria include its 100-pin LQFP package, 50 MHz CPU clock, integrated 10/100 Ethernet MAC, dual CAN 2.0B controllers, and support for deterministic real-time motor control and networked embedded systems.
Technical Context
The LM3S8530-EQC50-A2T implements the ARM Cortex-M3 core with NVIC, SysTick, MPU, and Thumb-2 instruction set, enabling deterministic interrupt latency and memory protection in safety-critical environments. It integrates a full 10/100 Ethernet MAC (no external PHY required) and two independent CAN 2.0B controllers with message objects and bit-rate configuration registers.
Peripherals include four 16/32-bit general-purpose timers with RTC and PWM modes, eight UARTs, two I²C modules supporting standard/fast mode, two SSI interfaces compatible with SPI/Microwire, and a 10-bit 1-MSPS ADC with 16-channel analog input multiplexing - all directly memory-mapped and accessible via APB bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, supports Thumb-2 instructions and hardware divide for efficient real-time firmware execution. |
| Max Clock Speed | 50 MHz - enables deterministic 20 ns instruction cycle time for time-critical control loops in motor drives and PLCs. |
| Flash Memory | 256 KB - sufficient for bootloader, protocol stacks (TCP/IP, CANopen), and application firmware with field-upgrade capability. |
| SRAM | 64 KB - supports real-time data buffering, Ethernet packet queues, and CAN message object storage without external RAM. |
| Ethernet Interface | Integrated 10/100 MAC with MII interface - eliminates need for external MAC chip; requires external PHY for physical layer connection. |
| CAN Controllers | Dual CAN 2.0B modules, each with 32 message objects and programmable bit timing - supports redundant or multi-bus automotive/industrial networks. |
| ADC | 10-bit, 1-MSPS, 16-channel SAR ADC with hardware sequencer - suitable for analog sensor acquisition in closed-loop feedback systems. |
Pinout & Package
LM3S8530-EQC50-A2T is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS166I datasheet Section 15 (Pin Diagram) and Section 16.1 (100-Pin LQFP Signal Tables).
| 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. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling between signal domains. |
| PA0–PA7, PB0–PB7, etc. | GPIO with alternate functions | Each port supports up to 8 peripheral functions (e.g., UART0TX on PA0, CAN0RX on PB4) - configurable via GPIO AFSEL register. |
| RMII_RX0, RMII_RX1, RMII_CRS_DV | Ethernet MAC receive interface | Direct RMII signals for 50-MHz synchronous Ethernet data capture - no glue logic needed for PHY interfacing. |
| CAN0RX, CAN0TX, CAN1RX, CAN1TX | CAN transceiver interface pins | Dedicated differential pair pins per CAN controller - require external high-speed transceivers (e.g., SN65HVD230) for bus termination and level shifting. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 10/100 Ethernet MAC | Reduces BOM count by eliminating discrete MAC IC; supports IEEE 802.3 CSMA/CD and MII/RMII PHY interfaces. |
| Dual CAN 2.0B controllers | Enables concurrent operation on separate buses - e.g., one for motion control, one for diagnostics - with independent message filtering and FIFO management. |
| Hardware CRC generator | Accelerates checksum calculation for Ethernet frames and CAN messages - offloads CPU and ensures deterministic timing for protocol compliance. |
| Memory Protection Unit (MPU) | Configurable region-based access control prevents unauthorized code/data access - critical for certified industrial firmware partitions and secure boot. |
| Wake-on-LAN and CAN wake-up | Allows low-power sleep states (Sleep/Deep-Sleep) with selective peripheral wake events - extends battery life in remote monitoring nodes. |
Applications
| Industrial PLC Controller | Automotive Diagnostic Tool |
|---|---|
Use Scenario: Compact programmable logic controller executing ladder logic and communicating over EtherNet/IP and CANopen networks in factory automation. IC Role / Device Role / Timing Role: Central MCU managing I/O scanning, protocol stack execution (TCP/IP + CANopen), and real-time task scheduling with sub-100 µs jitter. Use Value: Integrated Ethernet MAC and dual CAN eliminate external interface ICs; 50 MHz Cortex-M3 delivers sufficient MIPS for concurrent protocol processing and control loop execution. | Use Scenario: Handheld OBD-II scanner connecting to vehicle ECUs via high-speed CAN and displaying diagnostic trouble codes on an LCD. IC Role / Device Role / Timing Role: Host processor running CAN ISO 15765-2 transport layer, interpreting UDS services, and driving USB/HID interface to PC. Use Value: Dual CAN controllers allow simultaneous communication with powertrain and body control modules; 256 KB flash stores multiple ECU-specific diagnostic routines. |
| Networked Motor Drive | Building Automation Gateway |
Use Scenario: Brushless DC motor drive with field-oriented control (FOC), position feedback, and Modbus TCP connectivity for HVAC or conveyor systems. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithm at 20 kHz PWM frequency while maintaining Ethernet-based supervisory communication. Use Value: Hardware PWM generators with dead-time insertion and quadrature encoder interface (QEI) support simplify motor control design; Ethernet MAC enables direct integration into BACnet/IP networks. | Use Scenario: Edge gateway aggregating data from BACnet MS/TP, KNX, and DALI lighting devices and forwarding to cloud via Ethernet. IC Role / Device Role / Timing Role: Protocol translation hub with multiple serial interfaces (UART, I²C, SSI), Ethernet uplink, and local flash storage for offline logging. Use Value: Eight UARTs and dual I²C/SSI interfaces support concurrent legacy building bus connections; 64 KB SRAM buffers multi-protocol message traffic without overflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S9B92-IQC50-A2 | Same Cortex-M3 core, 50 MHz, but features 512 KB flash, 96 KB SRAM, and added USB OTG controller - no Ethernet MAC. | Better suited for USB-host applications (e.g., HID device firmware), less optimal where Ethernet connectivity is mandatory. | Select LM3S9B92 only if USB host/device capability outweighs need for integrated Ethernet MAC. |
| TM4C123GH6PM | Successor series with same pin-compatible 100-pin LQFP package, 80 MHz Cortex-M4F core, 256 KB flash, 32 KB SRAM, integrated Ethernet MAC and CAN, plus FPU and enhanced debug. | Offers higher performance and floating-point math for advanced control algorithms, but requires firmware migration from StellarisWare to TivaWare. | Choose TM4C123GH6PM for new designs requiring higher compute throughput or FPU support; LM3S8530-EQC50-A2T remains viable for legacy-compatible cost-sensitive deployments. |
Compared with LM3S9B92-IQC50-A2, LM3S8530-EQC50-A2T provides essential Ethernet MAC functionality at lower memory cost; versus TM4C123GH6PM, it offers proven StellarisWare ecosystem compatibility and simpler migration path for existing Cortex-M3 firmware, though with reduced clock speed and no FPU.
Availability
LM3S8530-EQC50-A2T is available at Aetrix Electronics and suitable for industrial PLCs, automotive diagnostic tools, networked motor drives, and building automation gateways requiring stable component supply across extended production lifecycles.
Supply support for LM3S8530-EQC50-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 wireless technologies with emphasis on industrial, automotive, and communications markets.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications requiring integrated connectivity - especially those needing on-chip Ethernet MAC and CAN without external interface ICs.
FAQ
What is the maximum operating frequency of the LM3S8530-EQC50-A2T?
The LM3S8530-EQC50-A2T operates at a maximum CPU clock frequency of 50 MHz, as confirmed in the Texas Instruments SPMS166I datasheet Section 5.2.4 (Clock Control). This frequency is achieved using the internal PLL with an external crystal or oscillator input, and it defines the instruction execution rate, timer resolution, and peripheral bus timing for the LM3S8530-EQC50-A2T in real-time control applications.
Does the LM3S8530-EQC50-A2T include an integrated Ethernet PHY?
No, the LM3S8530-EQC50-A2T integrates only the Ethernet MAC layer (10/100 Mbps), not the physical layer (PHY). As specified in Section 14.2 of the SPMS166I datasheet, it provides MII and RMII interfaces requiring an external PHY (e.g., DP83848) for copper/fiber media connection. The LM3S8530-EQC50-A2T handles frame assembly, CRC generation, and DMA transfers, but PHY signaling and line driver functions remain external.
How many CAN controllers does the LM3S8530-EQC50-A2T support?
The LM3S8530-EQC50-A2T supports two independent CAN 2.0B controllers, as documented in Section 13 of the SPMS166I datasheet. Each controller has 32 message objects, programmable bit timing, and dedicated RX/TX pins (CAN0RX/CAN0TX and CAN1RX/CAN1TX), enabling concurrent operation on separate CAN buses - a capability confirmed in the functional description and register map for the LM3S8530-EQC50-A2T.
What package type is used for the LM3S8530-EQC50-A2T?
The LM3S8530-EQC50-A2T uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad, as defined in Section 15 (Pin Diagram) and Section 16.1 (100-Pin LQFP Package Pin Tables) of the SPMS166I datasheet. This package is RoHS-compliant and rated for industrial temperature range (–40°C to +105°C), matching the "EQ" prefix in the part number.
Is the LM3S8530-EQC50-A2T pin-compatible with newer Tiva C Series MCUs?
The LM3S8530-EQC50-A2T is not fully pin-compatible with Tiva C Series MCUs such as TM4C123GH6PM, despite sharing the same 100-pin LQFP footprint. While pin count and physical dimensions match, signal assignments differ significantly - e.g., Ethernet RMII pins on LM3S8530 are relocated or repurposed in TM4C123, and certain GPIO alternate functions are reassigned. Migration requires PCB layout revision and firmware adaptation for the LM3S8530-EQC50-A2T replacement.
LM3S8530-EQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 8000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, Ethernet, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 35
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S8530-EQC50-A2T FAQ
1.How can I place an order for LM3S8530-EQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S8530-EQC50-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 LM3S8530-EQC50-A2T reliable?
The price and inventory of LM3S8530-EQC50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S8530-EQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S8530-EQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S8530-EQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S8530-EQC50-A2T?
LM3S8530-EQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S8530-EQC50-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 LM3S8530-EQC50-A2T?
For technical support, including LM3S8530-EQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S8530-EQC50-A2T requirements.
6.How does Aetrix verify that LM3S8530-EQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S8530-EQC50-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 LM3S8530-EQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S8530-EQC50-A2T?
All LM3S8530-EQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S8530-EQC50-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 LM3S8530-EQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S8530-EQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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