Texas Instruments LM3S8530-IBZ50-A2

Overview

LM3S8530-IBZ50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0A/B controller, 10/100 Ethernet MAC, and dual UARTs. It operates at up to 50 MHz, supports industrial temperature range (–40°C to +85°C), and targets embedded control in networked motor drives and industrial automation systems.

For engineers reviewing the LM3S8530-IBZ50-A2 datasheet, LM3S8530-IBZ50-A2 pinout, LM3S8530-IBZ50-A2 application, or LM3S8530-IBZ50-A2 equivalent, key selection criteria include its integrated Ethernet MAC with MII interface, dual CAN channels, deterministic real-time interrupt latency, and support for StellarisWare® peripheral driver library.

Technical Context

The LM3S8530-IBZ50-A2 implements the ARMv7-M architecture with NVIC supporting 64 interrupt lines, 8 priority levels, and sub-prioritization. Its system clock derives from an internal precision oscillator or external crystal, with PLL enabling stable 50 MHz operation.

It integrates a full 10/100 Ethernet MAC compliant with IEEE 802.3, supporting MII physical interface and internal PHY-less operation, plus two independent CAN 2.0B controllers with 32 message objects each and programmable bit timing-enabling concurrent industrial fieldbus and IP-based communication.

Key Specifications

Pinout & Package

LM3S8530-IBZ50-A2 is housed in a 100-pin LQFP (PZ) package with 0.5 mm pitch, 14 × 14 mm body size, and exposed thermal pad. Pin assignments follow TI's standardized Stellaris LQFP layout with dedicated power/ground distribution and noise-isolated analog/digital sections.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LM3S8530-IBZ50-A2, LM3S9B92-IBZ50-A2 trades Ethernet for USB and higher memory, while TM4C123GH6PM offers architectural upgrades and continuity but requires PHY-level redesign-making LM3S8530-IBZ50-A2 optimal for legacy-compatible Ethernet/CAN gateways.

Availability

LM3S8530-IBZ50-A2 is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, programmable logic controllers, and energy metering nodes requiring stable component supply and long-lifecycle assurance.

Supply support for LM3S8530-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and wireless technologies with over 90 years of innovation in industrial and automotive electronics.

The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications requiring integrated connectivity-especially where Ethernet and CAN coexistence simplifies industrial network edge node design.

FAQ

What is the maximum operating frequency of the LM3S8530-IBZ50-A2?

The LM3S8530-IBZ50-A2 operates at a maximum frequency of 50 MHz, achieved via internal PLL multiplication of the system clock source. This speed is fully supported across the industrial temperature range (–40°C to +85°C) and enables sub-microsecond interrupt response times critical for real-time motor control loops. The LM3S8530-IBZ50-A2 datasheet specifies timing parameters under worst-case voltage and temperature conditions to guarantee deterministic behavior.

Does the LM3S8530-IBZ50-A2 include an integrated Ethernet PHY?

No, the LM3S8530-IBZ50-A2 integrates only the Ethernet MAC layer compliant with IEEE 802.3, not a physical layer (PHY). It requires an external 10/100BASE-TX PHY connected via the MII interface (RMII_RXD[1:0], RMII_TXD[1:0], etc.). This separation allows design flexibility in selecting PHYs with specific features like ESD protection, low-power modes, or fiber interface options. The LM3S8530-IBZ50-A2 pinout and reference schematics document required PHY interface signals and timing constraints.

How many CAN controllers does the LM3S8530-IBZ50-A2 support?

The LM3S8530-IBZ50-A2 supports two independent CAN 2.0B controllers (CAN0 and CAN1), each with 32 message objects, programmable bit timing, and full mailbox-based transmit/receive buffering. This enables simultaneous operation on two separate CAN buses-for example, one for device control (CANopen) and another for diagnostics or firmware updates. The LM3S8530-IBZ50-A2 datasheet confirms dual-CAN functionality in Section 13 and provides register-level configuration details for both modules.

Is the LM3S8530-IBZ50-A2 pin-compatible with other Stellaris LM3S devices?

The LM3S8530-IBZ50-A2 uses a 100-pin LQFP (PZ) package shared with several other LM3S devices, but pin compatibility is not guaranteed across the entire family. Signal mapping varies significantly-especially for Ethernet, CAN, and peripheral alternate functions-as documented in Section 15 (Pin Diagram) and Section 16.1 (100-Pin LQFP Signal Tables) of the LM3S8530-IBZ50-A2 datasheet. Always verify pin function allocation against the specific LM3S8530-IBZ50-A2 signal tables before board reuse.

What development tools are officially supported for the LM3S8530-IBZ50-A2?

Texas Instruments officially supports Keil MDK-ARM, IAR Embedded Workbench for ARM, and TI's Code Composer Studio v5.x for LM3S8530-IBZ50-A2 firmware development. All tools integrate with the StellarisWare® peripheral driver library and support SWD/JTAG debugging via the LM3S8530-IBZ50-A2's debug interface. TI also provides evaluation kits like the EK-LM3S8530 that include hardware schematics, bootloaders, and example projects validated for the LM3S8530-IBZ50-A2 silicon revision.