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Texas Instruments LM3S1435-IBZ50-A2
- Part No.:
- LM3S1435-IBZ50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S1435-IBZ50-A2.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,221
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Product details
Overview
LM3S1435-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, 2 I²C, 3 CAN controllers, USB Full-Speed Device/Host/OTG, and 10/100 Ethernet MAC+PHY with IEEE 1588 support. Designed for real-time industrial control applications including factory automation and networked HVAC systems.
For engineers reviewing the LM3S1435-IBZ50-A2 datasheet, LM3S1435-IBZ50-A2 pinout, LM3S1435-IBZ50-A2 application, or LM3S1435-IBZ50-A2 equivalent, key selection criteria include its integrated Ethernet PHY, deterministic Cortex-M3 interrupt latency (12 cycles), 5V-tolerant GPIOs, hardware motion control peripherals (QEI, PWM, dead-band generator), and ROM-based Stellaris Peripheral Driver Library support.
Technical Context
The LM3S1435-IBZ50-A2 implements the ARM Cortex-M3 core with Thumb-2 instruction set, delivering 1.25 DMIPS/MHz performance and deterministic 12-cycle interrupt response. Its system architecture includes a 32-channel DMA controller, NVIC, SWD/JTAG debug interface, and precision oscillator with hibernate RTC support.
Peripherals are tightly coupled to the core via AHB/APB buses: dual 10-bit ADCs share sample rate up to 1 Msps, three CAN controllers support ISO 11898-1 compliance, and the integrated 10/100 Ethernet MAC+PHY includes IEEE 1588 timestamping hardware for time-sensitive networking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3, 50 MHz - enables real-time deterministic execution with 1.25 DMIPS/MHz efficiency |
| Memory | 256 KB Flash + 96 KB SRAM - supports complex control algorithms and protocol stacks without external memory |
| ADC | Dual 10-bit, 8-channel, 1 Msps - allows simultaneous sampling of multiple analog sensors in motor control or energy monitoring |
| Ethernet | Integrated 10/100 MAC + PHY with IEEE 1588 - eliminates external PHY component and enables precise time synchronization for industrial Ethernet |
| Serial Interfaces | 3 UART, 2 SSI/SPI, 2 I²C, 3 CAN, USB FS Device/Host/OTG - provides native connectivity for fieldbus, human interface, and firmware update channels |
| GPIO | Up to 48 5V-tolerant pins with programmable drive/slew - simplifies level-shifting in mixed-voltage industrial environments |
| Power Management | Three sleep modes with clock gating, hibernate RTC, brown-out reset - extends battery life in portable or remote monitoring devices |
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, VDDUSB | Power supply inputs | Dedicated domains for digital logic, analog subsystem, and USB PHY - reduce noise coupling in mixed-signal operation |
| GND, GNDA, GNDUSB | Ground returns | Separate analog/digital/USB ground planes - preserve ADC accuracy and USB signal integrity |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE4 | General-purpose I/O | All 5V-tolerant, configurable as GPIO, UART, SSI, I²C, CAN, or timer functions - enable flexible peripheral mapping without external logic |
| USB0VBUS, USB0ID, USB0P, USB0N | USB interface signals | Full-speed differential pair with integrated transceiver - supports device/host/OTG operation without external PHY |
| EMAC0RX+, EMAC0RX−, EMAC0TX+, EMAC0TX−, EMAC0CRS, EMAC0COL | Ethernet physical layer | Integrated 10/100 PHY with MII/RMII support - eliminates external Ethernet PHY and reduces BOM count by ≥5 components |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based Stellaris Peripheral Driver Library | Reduces flash usage by offloading driver code to on-chip ROM - frees ≥16 KB Flash for application logic in resource-constrained designs |
| IEEE 1588 Precision Time Protocol Hardware | Hardware timestamping engine for Ethernet frames - achieves sub-microsecond clock synchronization without software overhead |
| Dual Independent 10-bit ADCs | Simultaneous sampling across two 8-channel ADCs - enables synchronized current/voltage measurement in motor control phase sensing |
| 3 CAN Controllers | Independent CAN 2.0A/B compliant modules - supports multi-bus automotive or industrial networks (e.g., J1939 + CANopen + proprietary) |
| Quadrature Encoder Interface (QEI) | Dedicated hardware for position/speed decoding - relieves CPU load during high-resolution encoder counting (up to 16-bit resolution) |
Applications
| Factory Automation Controller | Networked HVAC Gateway |
|---|---|
Use Scenario: Real-time PLC-like control of conveyor belts, solenoid valves, and sensor arrays in discrete manufacturing lines. IC Role / Device Role / Timing Role: Central deterministic controller executing motion profiles, reading analog process variables, and managing EtherNet/IP communication. Use Value: Integrated Ethernet PHY and IEEE 1588 enable precise cycle timing (<100 µs jitter) for synchronized I/O updates across distributed nodes. | Use Scenario: Edge gateway aggregating temperature, humidity, and CO₂ data from building sensors and forwarding to cloud via Ethernet/WiFi bridge. IC Role / Device Role / Timing Role: Protocol translation hub running Modbus TCP over Ethernet and local I²C/SPI sensor interfaces. Use Value: Dual ADCs sample 16+ analog sensors simultaneously; USB OTG allows field technician firmware updates via thumb drive. |
| Industrial Motor Drive Interface | Energy Monitoring Node |
Use Scenario: Closed-loop control of BLDC motors using hall-effect feedback and PWM-driven gate drivers in pump/compressor systems. IC Role / Device Role / Timing Role: Motion control co-processor handling QEI decoding, PWM generation with dead-band insertion, and current sensing ADC acquisition. Use Value: Hardware QEI and PWM timers operate independently of CPU - guarantee 500 ns timing resolution for commutation timing critical to motor efficiency. | Use Scenario: DIN-rail mounted meter measuring voltage, current, and power factor across three-phase industrial loads. IC Role / Device Role / Timing Role: High-accuracy data acquisition unit with synchronized sampling across voltage/current channels and CAN-based reporting. Use Value: Dual 10-bit ADCs achieve 0.1% full-scale accuracy at 1 Msps - meets IEC 61000-4-30 Class A requirements for harmonic analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S1968-IQC50-A2 | Same Cortex-M3 core, 50 MHz, but 256 KB Flash + 64 KB SRAM; adds hibernate module and battery-backed RTC | Better suited for battery-powered remote monitoring where low-power hibernate mode is required | Select LM3S1968-IQC50-A2 when >10-year battery life in hibernate mode is mandatory |
| LM3S8962-IQC50-A2 | Identical memory (256 KB Flash/96 KB SRAM) and peripheral set, but in 100-pin LQFP package with expanded GPIO (52 pins) and additional SSI/I²C instances | Preferred for designs requiring >48 GPIOs or dual independent SPI buses (e.g., display + SD card) | Select LM3S8962-IQC50-A2 when board layout requires more I/O flexibility or additional serial interfaces |
Compared with LM3S1435-IBZ50-A2, LM3S1968-IQC50-A2 trades SRAM capacity (64 KB vs. 96 KB) for hibernate functionality, while LM3S8962-IQC50-A2 retains identical memory/performance but expands I/O count and package size - making LM3S1435-IBZ50-A2 optimal for space-constrained industrial controllers needing maximum SRAM and integrated Ethernet PHY in minimal footprint.
Availability
LM3S1435-IBZ50-A2 is available at Aetrix Electronics and suitable for factory automation, networked HVAC systems, and industrial motor control applications requiring stable component supply and long-term industrial temperature support.
Supply support for LM3S1435-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 specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The LM3S1435-IBZ50-A2 belongs to the Stellaris family of ARM Cortex-M3 MCUs, engineered specifically for cost-sensitive real-time control applications demanding integrated Ethernet, CAN, and analog subsystems without external components.
FAQ
What is the maximum operating frequency of the LM3S1435-IBZ50-A2?
The LM3S1435-IBZ50-A2 operates at a maximum frequency of 50 MHz, as confirmed by its part number suffix "50" and the official Stellaris documentation. This speed is sustained across the full industrial temperature range (–40°C to +85°C) with appropriate decoupling and power supply regulation. The Cortex-M3 core delivers 1.25 DMIPS/MHz at this frequency, enabling efficient execution of real-time control loops and protocol stacks within the LM3S1435-IBZ50-A2.
Does the LM3S1435-IBZ50-A2 include an integrated Ethernet PHY?
Yes, the LM3S1435-IBZ50-A2 integrates a full 10/100 Ethernet MAC and PHY in a single die, supporting both MII and RMII interfaces. This eliminates the need for an external PHY chip and associated magnetics in many industrial Ethernet designs. The integrated PHY complies with IEEE 802.3 and includes hardware support for IEEE 1588 Precision Time Protocol, enabling sub-microsecond timestamping directly within the LM3S1435-IBZ50-A2.
What ADC capabilities does the LM3S1435-IBZ50-A2 provide?
The LM3S1435-IBZ50-A2 features two independent 10-bit analog-to-digital converters, each with 8 input channels and a maximum sampling rate of 1 Msps. Both ADCs support hardware-triggered conversions synchronized to timer events or PWM edges - critical for motor current sensing and power quality analysis. The LM3S1435-IBZ50-A2 also includes an internal temperature sensor and ±1 LSB integral nonlinearity specification per ADC channel.
Is the LM3S1435-IBZ50-A2 pin-compatible with other Stellaris MCUs in the same package?
No, the LM3S1435-IBZ50-A2 is not universally pin-compatible with other 48-pin LQFP Stellaris MCUs. While it shares the same package outline and power/ground pin locations, peripheral pin mappings (e.g., CAN, USB, Ethernet signals) differ significantly across the LM3S1xxx, LM3S3xx, and LM3S6xx series. Pin compatibility must be verified per function using the LM3S1435-IBZ50-A2-specific datasheet; direct substitution without layout review may result in lost functionality or electrical conflicts.
What development tools support the LM3S1435-IBZ50-A2?
The LM3S1435-IBZ50-A2 is supported by Texas Instruments' Stellarisware software suite, including the royalty-free Peripheral Driver Library, USB Library, and Graphics Library - all written in C and compatible with Keil MDK-ARM, IAR Embedded Workbench, and GNU GCC toolchains. TI's LMFlash utility and SWD/JTAG debuggers (e.g., XDS100v2) fully support programming and debugging of the LM3S1435-IBZ50-A2, and evaluation kits like the LM3S1968 platform can be adapted for LM3S1435-IBZ50-A2 prototyping via pin-mapping verification.
LM3S1435-IBZ50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- 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:
- I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 46
- 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 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1435-IBZ50-A2 FAQ
1.How can I place an order for LM3S1435-IBZ50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1435-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 LM3S1435-IBZ50-A2 reliable?
The price and inventory of LM3S1435-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 LM3S1435-IBZ50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S1435-IBZ50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1435-IBZ50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1435-IBZ50-A2?
LM3S1435-IBZ50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1435-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 LM3S1435-IBZ50-A2?
For technical support, including LM3S1435-IBZ50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1435-IBZ50-A2 requirements.
6.How does Aetrix verify that LM3S1435-IBZ50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S1435-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 LM3S1435-IBZ50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S1435-IBZ50-A2?
All LM3S1435-IBZ50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1435-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 LM3S1435-IBZ50-A2 part is unused and in its original packaging.
Return procedure for LM3S1435-IBZ50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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