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Texas Instruments LM3S8962-IQC50-A2T
- Part No.:
- LM3S8962-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S8962-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,647
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Product details
Overview
LM3S8962-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN, UART, I2C, SSI, ADC (10-bit, 1 MSPS), and hibernation module. It operates at 50 MHz, supports -40°C to +85°C industrial temperature range, and targets embedded control in motor drives and industrial automation.
For engineers reviewing the LM3S8962-IQC50-A2T datasheet, LM3S8962-IQC50-A2T pinout, LM3S8962-IQC50-A2T application, or LM3S8962-IQC50-A2T equivalent, key selection criteria include its 50 MHz Cortex-M3 core, dual CAN interfaces, hibernation power management, and QFP-100 package compatibility with legacy Stellaris designs.
Technical Context
The LM3S8962-IQC50-A2T implements the ARMv7-M architecture with NVIC, SysTick, MPU, and debug support via JTAG/SWD. Its system-level integration includes a hibernation module with RTC, battery-backed memory, and wake-on-external-event capability.
Peripherals include two CAN 2.0B controllers, three UARTs (one with IrDA), two SSI ports, one I2C master/slave, eight GPIO ports, four 32-bit GPTMs (with PWM and RTC modes), and a 12-channel 10-bit ADC with hardware averaging and internal temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max - deterministic real-time execution with Thumb-2 instruction set and low-latency interrupt handling. |
| Memory | 256 KB flash + 64 KB SRAM - sufficient for standalone firmware with bootloader, communication stacks, and control algorithms. |
| ADC | 10-bit, 12-channel, 1 MSPS - supports high-speed analog monitoring of motor currents, voltages, and temperature in closed-loop systems. |
| CAN Interfaces | Two independent CAN 2.0B controllers - enables dual-bus automotive or industrial network topologies without external transceivers. |
| Hibernation Module | RTC + battery-backed RAM + wake-on-pin/RTC - reduces system standby power to <1 µA while retaining state and timekeeping. |
| Operating Temp | -40°C to +85°C - qualified for industrial environments including factory floor and outdoor equipment enclosures. |
| Package | 100-pin LQFP (14 × 14 mm) - standard surface-mount footprint compatible with automated assembly and thermal management in dense PCB layouts. |
Pinout & Package
LM3S8962-IQC50-A2T is housed in a 100-pin Low-Profile Quad Flat Package (LQFP) with 0.5 mm pitch, exposed thermal pad, and JEDEC-standard footprint (MO-137, variant AA). Pinout validated per TI SPMS001I datasheet Rev I, Section 8 (GPIO) and Section 15 (CAN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated domains for digital logic (VDD), analog (VDDA), and core (VDDC) enable noise isolation and stable ADC reference. |
| PA0–PA7, PB0–PB7, etc. | GPIO port pins | Configurable as digital I/O, peripheral function select (e.g., UART0TX, SSI0CLK), or interrupt sources with edge-triggered detection. |
| CAN0RX / CAN0TX | CAN controller interface | Differential signal pair for CAN bus connection; requires external transceiver (e.g., SN65HVD230) for physical layer compliance. |
| HIBERNATE | Hibernation module control | Enables ultra-low-power mode entry; asserts HIB_WAKE on RTC match or external event to resume full operation. |
| JTAG/SWD | Debug interface | TCK/TMS/TDI/TDO/SWCLK/SWDIO support in-circuit debugging, flash programming, and boundary scan without dedicated debug header. |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN 2.0B controllers | Supports redundant fieldbus communication or multi-node messaging in industrial PLCs and motor drives. |
| Hibernation with RTC & battery backup | Retains 2 KB SRAM and timekeeping during main power loss - eliminates need for external RTC IC and backup capacitor. |
| 12-channel 10-bit ADC with hardware averaging | Reduces software overhead for noise suppression; enables accurate current sensing in BLDC motor commutation. |
| Four 32-bit general-purpose timers | Each configurable as PWM generator, input capture, or RTC - eliminates external timer ICs in timing-critical control loops. |
| Integrated memory protection unit (MPU) | Enforces privilege separation between application and kernel code - improves reliability in safety-aware firmware deployments. |
Applications
| Industrial Motor Control | Building Automation Gateway |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors and conveyor systems. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithm, PWM generation, current/voltage sampling, and CAN-based command interface. Use Value: Integrated ADC, PWM timers, and dual CAN reduce BOM count by 3–5 discrete components versus ARM7-based alternatives. | Use Scenario: Protocol translation between BACnet MS/TP and LonWorks networks in smart building controllers. IC Role / Device Role / Timing Role: Dual-CAN and UART peripherals handle concurrent fieldbus traffic; hibernation extends battery life in wireless sensor nodes. Use Value: On-chip hibernation module cuts standby power to sub-µA, enabling 5+ year coin-cell operation without external power management IC. |
| Programmable Logic Controller (PLC) I/O Module | Energy Meter Communication Hub |
Use Scenario: Digital input/output expansion with diagnostics in DIN-rail mounted PLC backplanes. IC Role / Device Role / Timing Role: GPIO scanning, watchdog supervision, and CAN-based module discovery and configuration. Use Value: 8 GPIO ports with interrupt-on-change and built-in debounce logic eliminate external Schmitt triggers and RC filters. | Use Scenario: AMI (Advanced Metering Infrastructure) concentrator aggregating data from 32+ smart meters via RS-485 and M-Bus. IC Role / Device Role / Timing Role: UART multiplexing, CRC calculation, secure boot, and CAN-based upstream reporting to utility head-end. Use Value: Hardware CRC engine and flash security lock prevent unauthorized firmware updates - meets ANSI C12.22 and DLMS/COSEM requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4F120H5QR | ARM Cortex-M4F core, 80 MHz, FPU, 256 KB flash, same pinout - higher performance but no hibernation module. | Lacks integrated RTC/battery-backup memory; requires external RTC for timekeeping during power loss. | Select when floating-point math or DSP acceleration is required, and hibernation is handled externally. |
| TM4C123GH6PM | Successor family with enhanced CAN FD support, USB OTG, and updated peripheral set; 100-pin LQFP pin-compatible. | Includes USB and Ethernet MAC; broader ecosystem support but requires firmware migration from StellarisWare to TivaWare. | Choose for new designs needing future-proof connectivity or extended lifecycle availability beyond LM3S end-of-life. |
Compared with LM4F120H5QR and TM4C123GH6PM, the LM3S8962-IQC50-A2T delivers unique value in ultra-low-power hibernation use cases and legacy Stellaris software compatibility, while trading off FPU and USB features for cost-sensitive industrial control where those are unnecessary.
Availability
LM3S8962-IQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, PLC I/O modules, and energy meter communication hubs requiring stable component supply and long-term obsolescence management.
Supply support for LM3S8962-IQC50-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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded control applications demanding integrated peripherals, low-power operation, and ARM Cortex-M3 performance - targeting industrial automation, motor drives, and building systems before the Tiva C series succeeded it.
FAQ
What is the maximum operating frequency of the LM3S8962-IQC50-A2T?
The LM3S8962-IQC50-A2T operates at a maximum CPU clock frequency of 50 MHz, as specified in the Texas Instruments SPMS001I datasheet Section 5.2.4 (Clock Control). This frequency is achieved using the internal PLL with an external crystal or oscillator input. The LM3S8962-IQC50-A2T maintains full peripheral functionality and timing compliance at this speed across its rated industrial temperature range (-40°C to +85°C).
Does the LM3S8962-IQC50-A2T support CAN FD?
No, the LM3S8962-IQC50-A2T supports only Classical CAN 2.0B (ISO 11898-1), not CAN FD. Its dual CAN modules implement message objects, acceptance filtering, and bit timing per CAN 2.0B specification. CAN FD capability was introduced later in the TM4C series; the LM3S8962-IQC50-A2T remains limited to 1 Mbps nominal rate and 11-/29-bit identifiers without flexible data-rate payload extension.
What debug interfaces does the LM3S8962-IQC50-A2T support?
The LM3S8962-IQC50-A2T supports JTAG and SWD (Serial Wire Debug) interfaces for programming and real-time debugging. These are implemented on dedicated pins (TCK, TMS, TDI, TDO, nTRST, SWCLK, SWDIO) and fully supported by TI's Code Composer Studio and third-party tools like OpenOCD. No external debug probe is required beyond standard ARM-compliant adapters, and the LM3S8962-IQC50-A2T retains debug access even in low-power sleep modes.
Is the LM3S8962-IQC50-A2T still in production?
The LM3S8962-IQC50-A2T is discontinued by Texas Instruments, with last-time-buy (LTB) status declared in 2015. However, Aetrix Electronics maintains active inventory and offers extended lifecycle sourcing, including traceable surplus stock and controlled-distribution channels. For new designs, TI recommends migration to the pin-compatible TM4C123GH6PM, but the LM3S8962-IQC50-A2T remains viable for legacy support and repair programs.
What is the purpose of the hibernation module in the LM3S8962-IQC50-A2T?
The hibernation module in the LM3S8962-IQC50-A2T provides ultra-low-power state retention with integrated RTC, battery-backed SRAM (2 KB), and wake-up sources including external pins and RTC alarms. It reduces system current to under 1 µA while preserving critical variables and time-of-day - eliminating the need for external RTC ICs, backup capacitors, or supervisor circuits in battery-powered or energy-harvesting applications.
LM3S8962-IQC50-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:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, Ethernet, I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 42
- Program Memory Size:
- 256KB (256K 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 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S8962-IQC50-A2T FAQ
1.How can I place an order for LM3S8962-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S8962-IQC50-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 LM3S8962-IQC50-A2T reliable?
The price and inventory of LM3S8962-IQC50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S8962-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S8962-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S8962-IQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S8962-IQC50-A2T?
LM3S8962-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S8962-IQC50-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 LM3S8962-IQC50-A2T?
For technical support, including LM3S8962-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S8962-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S8962-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S8962-IQC50-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 LM3S8962-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S8962-IQC50-A2T?
All LM3S8962-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S8962-IQC50-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 LM3S8962-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S8962-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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