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Texas Instruments LM3S1435-IBZ50-A2T
- Part No.:
- LM3S1435-IBZ50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S1435-IBZ50-A2T.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
LM3S1435-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), 3 UARTs, 2 SSI/SPI, 2 I²C, 3 CAN controllers, USB Full-Speed device/host/OTG, and 8 PWM outputs. It targets real-time embedded control in HVAC, factory automation, and motor control systems.
For engineers reviewing the LM3S1435-IBZ50-A2T datasheet, LM3S1435-IBZ50-A2T pinout, LM3S1435-IBZ50-A2T application, or LM3S1435-IBZ50-A2T equivalent, key selection criteria include its 50 MHz Cortex-M3 core, integrated CAN/USB/Ethernet-capable peripherals, 5V-tolerant GPIOs, deterministic interrupt latency (12 cycles), and hibernate mode support for low-power operation.
Technical Context
The LM3S1435-IBZ50-A2T implements the ARM Cortex-M3 v7M architecture with Thumb-2 instruction set, delivering 1.25 DMIPS/MHz performance and single-cycle multiply/hardware divide. Its NVIC supports tail-chaining interrupts for deterministic 6-cycle response in chained scenarios.
It features a precision internal oscillator, two independent 10-bit ADCs each with 8 input channels and 1 Msps sampling rate, and dedicated motion-control hardware including quadrature encoder inputs, dead-band generator, and 8 PWM outputs with configurable slew rate and drive strength on all GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3, 50 MHz - delivers deterministic real-time control with 1.25 DMIPS/MHz and sub-12-cycle interrupt latency |
| Memory | 256 KB Flash + 96 KB SRAM - sufficient for complex control algorithms and protocol stacks (e.g., CANopen, USB HID) |
| ADC | 2 × 10-bit, 8-channel, 1 Msps - enables simultaneous analog sensing (e.g., motor current + temperature + voltage) |
| Communication | 3 UART, 2 SSI/SPI, 2 I²C, 3 CAN, USB FS Device/Host/OTG - supports multi-protocol industrial connectivity without external transceivers |
| Timers & PWM | 4 × 32-bit timer/PWM/CCP modules + 8 dedicated PWM outputs - provides hardware-accelerated motor control and precise timing |
| I/O | Up to 36 GPIOs, 5V-tolerant, programmable drive/slew - simplifies interface to legacy 5V logic and sensors without level shifters |
| Power Management | Hibernate mode with battery-backed RTC - enables ultra-low-power wake-on-event operation for remote monitoring nodes |
Pinout & Package
LM3S1435-IBZ50-A2T is housed in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS143 (LM3S1435 Datasheet Rev A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate analog/digital/core rails enable noise isolation for ADC accuracy and stable core operation |
| GND, GNDA, GNDC | Ground returns | Dedicated analog/digital/core ground planes minimize coupling and improve signal integrity |
| PD0–PD7, PE0–PE7, PF0–PF4, PG0–PG7, PH0–PH7 | GPIO banks | All pins support interrupt generation, 5V tolerance, and configurable drive strength/slew rate |
| PA0–PA7, PB0–PB7 | Peripheral multiplexed I/O | Shared with UART0/1/2, SSI0/1, I²C0/1, CAN0/1/2, USB, PWM, CCP, QEI - enables flexible peripheral mapping |
| OSC0, OSC1 | Crystal oscillator inputs | Supports 1–8 MHz crystal for precise system clock; internal PLL generates 50 MHz core clock |
| nRST | Active-low reset input | Asynchronous reset with built-in brown-out detection (BOD) ensures reliable startup under varying supply conditions |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 Core | Delivers 50 MHz deterministic real-time execution with 12-cycle interrupt latency and hardware divide/multiply - eliminates need for assembly optimization in control loops |
| Dual 10-bit ADCs | Each supports 8 channels at 1 Msps with ±1 LSB accuracy - enables concurrent high-speed analog acquisition for closed-loop motor control |
| Integrated CAN Controllers | Three independent CAN 2.0A/B controllers with message objects and FIFOs - supports multi-node industrial networks without external CAN transceivers |
| USB Full-Speed Interface | On-chip PHY supports device/host/OTG modes with royalty-free Stellaris USB Library - enables field-upgradeable firmware and HID-class peripherals |
| Hibernate Module | Battery-backed RTC with wake-on-GPIO/RTC/external interrupt - reduces standby power to µA range for battery-powered remote sensors |
Applications
| Industrial Motor Control | Building Automation Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC fan drives with real-time current/voltage/temperature feedback. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithm, managing PWM generation, ADC sampling, and CAN bus communication with supervisory PLC. Use Value: Integrated 8 PWM outputs with dead-band generator and dual 1 Msps ADCs eliminate external gate drivers and reduce BOM count by 3 components. | Use Scenario: Protocol translation hub connecting Modbus RTU field devices to BACnet/IP Ethernet backbone in smart buildings. IC Role / Device Role / Timing Role: Real-time bridge MCU handling serial-to-Ethernet conversion, data buffering, and time-synchronized scheduling of sensor polling. Use Value: On-chip 10/100 Ethernet MAC+PHY and three CAN controllers enable native dual-network support without external PHY or transceivers. |
| Medical Infusion Pump | Energy Monitoring Node |
Use Scenario: Safety-critical dosing control with pressure sensing, stepper motor actuation, and USB-based calibration/data export. IC Role / Device Role / Timing Role: Safety-certifiable controller managing motor sequencing, analog sensor fusion, fault detection, and secure USB host-mode firmware updates. Use Value: Deterministic 6-cycle tail-chained interrupt response ensures sub-millisecond reaction to occlusion events; hibernate mode extends battery life between doses. | Use Scenario: DIN-rail mounted power meter logging voltage, current, and harmonic distortion across three phases using CT and PT inputs. IC Role / Device Role / Timing Role: High-precision data acquisition engine synchronizing dual ADCs to sample all 6 analog channels within 1 µs window. Use Value: Dual 10-bit ADCs with 1 Msps throughput and ±1 LSB INL support Class 0.5 energy metering accuracy per IEC 62053-22. |
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 10/100 Ethernet MAC+PHY and IEEE 1588 support | Required for hard real-time Ethernet applications (e.g., EtherCAT slave, IEEE 1588 time synchronization) | Select when native Ethernet connectivity and precise time-stamping are mandatory; otherwise LM3S1435-IBZ50-A2T offers lower cost and identical peripheral set for CAN/USB-centric designs |
| LM3S811-IGZ50-A2 | Lower memory (64 KB Flash, 16 KB SRAM), no CAN, no USB OTG, single 10-bit ADC (8 ch, 500 kSPS) | Suitable for basic control tasks without multi-protocol networking or high-speed analog acquisition | Choose for cost-sensitive, low-complexity applications where CAN/USB/Ethernet and dual high-speed ADCs are unnecessary |
Compared with LM3S1968-IQC50-A2, LM3S1435-IBZ50-A2T omits Ethernet but retains full CAN/USB/ADC capability at lower price; versus LM3S811-IGZ50-A2, it doubles SRAM, adds CAN/USB OTG, and upgrades ADC speed/accuracy - making it optimal for mid-tier industrial control requiring protocol flexibility and analog fidelity.
Availability
LM3S1435-IBZ50-A2T is available at Aetrix Electronics and suitable for HVAC control systems, factory automation nodes, and medical infusion pumps requiring stable component supply and long-term industrial temperature support (–40°C to +85°C).
Supply support for LM3S1435-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 wireless technologies with broad industrial and automotive focus.
The LM3S1435-IBZ50-A2T belongs to the Stellaris LM3S1000 Series, designed specifically for cost-conscious, high-integration real-time control applications demanding CAN, USB, and high-resolution analog acquisition in compact 48-pin LQFP form factor.
FAQ
What is the maximum operating frequency of the LM3S1435-IBZ50-A2T?
The LM3S1435-IBZ50-A2T operates at a maximum core frequency of 50 MHz, achieved via its internal PLL driven by an external 1–8 MHz crystal or internal precision oscillator. This 50 MHz clock feeds the ARM Cortex-M3 core, timers, and peripherals, enabling deterministic real-time execution with 1.25 DMIPS/MHz performance. The LM3S1435-IBZ50-A2T maintains this speed across its full industrial temperature range (–40°C to +85°C).
Does the LM3S1435-IBZ50-A2T support CAN communication?
Yes, the LM3S1435-IBZ50-A2T integrates three independent CAN 2.0A/B controllers with dedicated message objects, transmit/receive FIFOs, and automatic retransmission. Each controller supports bit rates up to 1 Mbps and includes hardware filtering and error handling. This enables robust multi-node industrial networking without external CAN transceivers - a key capability confirmed in the Stellaris LM3S1435 datasheet and used in applications like factory automation and motor control systems with the LM3S1435-IBZ50-A2T.
What development tools are supported for the LM3S1435-IBZ50-A2T?
The LM3S1435-IBZ50-A2T is fully supported by Texas Instruments' Stellarisware software suite, including the royalty-free Stellaris Peripheral Driver Library, USB Library, and Graphics Library. It compiles with ARM/Keil MDK-ARM, IAR Embedded Workbench, Code Red Red Suite, and GNU GCC toolchains. Debugging uses standard JTAG/SWD interfaces, and programming leverages the pre-loaded serial flash loader or ROM-based boot loader - all documented for the LM3S1435-IBZ50-A2T in TI's official design resources.
Is the LM3S1435-IBZ50-A2T pin-compatible with other Stellaris MCUs?
No, the LM3S1435-IBZ50-A2T is not pin-compatible with other Stellaris MCUs outside its specific 48-pin LQFP variant group. While it shares the same 48-pin LQFP footprint with other LM3S1xxx-series devices like LM3S1968, pin functions differ significantly due to distinct peripheral sets (e.g., LM3S1435-IBZ50-A2T lacks Ethernet PHY pins present on LM3S1968). PCB layout must be verified against the LM3S1435-IBZ50-A2T-specific pinout in SPMS143 datasheet Rev A.
What is the ADC resolution and sampling rate of the LM3S1435-IBZ50-A2T?
The LM3S1435-IBZ50-A2T features two independent 10-bit analog-to-digital converters, each with 8 input channels and a maximum sampling rate of 1 million samples per second (1 Msps). Both ADCs achieve ±1 LSB integral nonlinearity (INL) and support simultaneous sampling triggers. This specification is explicitly stated in the LM3S1435-IBZ50-A2T electrical characteristics table and enables high-fidelity analog acquisition for applications such as motor current sensing and power quality monitoring.
LM3S1435-IBZ50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- 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:
- 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-A2T FAQ
1.How can I place an order for LM3S1435-IBZ50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1435-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 LM3S1435-IBZ50-A2T reliable?
The price and inventory of LM3S1435-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 LM3S1435-IBZ50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S1435-IBZ50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1435-IBZ50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1435-IBZ50-A2T?
LM3S1435-IBZ50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1435-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 LM3S1435-IBZ50-A2T?
For technical support, including LM3S1435-IBZ50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1435-IBZ50-A2T requirements.
6.How does Aetrix verify that LM3S1435-IBZ50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S1435-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 LM3S1435-IBZ50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S1435-IBZ50-A2T?
All LM3S1435-IBZ50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1435-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 LM3S1435-IBZ50-A2T part is unused and in its original packaging.
Return procedure for LM3S1435-IBZ50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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