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Texas Instruments LM3S808-IQN50-C2T
- Part No.:
- LM3S808-IQN50-C2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S808-IQN50-C2T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,572
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Product details
Overview
LM3S808-IQN50-C2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 64 KB flash, 24 KB SRAM, integrated ADC (10-bit, 8-channel), dual UARTs, I²C, SSI, PWM timers, and analog comparator - designed for real-time industrial control and motor drive applications.
For engineers reviewing the LM3S808-IQN50-C2T datasheet, LM3S808-IQN50-C2T pinout, LM3S808-IQN50-C2T application, or LM3S808-IQN50-C2T equivalent, key selection criteria include its 50 MHz operation, QFP-100 package, integrated motor control peripherals, and support for deterministic real-time execution in resource-constrained embedded systems.
Technical Context
The LM3S808-IQN50-C2T implements the ARM Cortex-M3 core with Thumb-2 instruction set, NVIC with 32 interrupt lines, and SysTick timer - enabling low-latency interrupt response and deterministic task scheduling. It integrates dedicated motor control peripherals including PWM generators with dead-band insertion and fault protection inputs.
Its analog subsystem includes an 8-channel, 10-bit ADC with hardware averaging and sequencer-based sampling, plus a dual analog comparator with internal reference - supporting closed-loop feedback in motion control and sensor monitoring without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, supports Thumb-2 for code density and performance efficiency |
| Max Clock Speed | 50 MHz - enables real-time control loop execution within sub-10 µs timing budgets |
| Flash Memory | 64 KB - sufficient for firmware with bootloader, communication stacks, and control algorithms |
| SRAM | 24 KB - accommodates runtime variables, stack, heap, and sensor data buffers |
| ADC | 10-bit, 8-channel, up to 1 MSPS - supports simultaneous sampling of multiple motor phase currents or voltage rails |
| PWM Timers | 6 × 16-bit timers with PWM, capture/compare, and quadrature encoder input - directly drives 3-phase inverter gate drivers |
| Communication | 2 × UART, 1 × I²C, 1 × SSI - enables serial diagnostics, sensor interfacing, and SPI-based peripheral expansion |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including factory automation and HVAC controllers |
Pinout & Package
LM3S808-IQN50-C2T is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermally enhanced for industrial PCB layouts requiring reliable thermal dissipation under continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated domains for digital logic, analog circuitry, and core voltage ensure noise isolation for ADC and comparator accuracy |
| GND, GNDA, GNDC | Ground returns | Separate analog/digital/core ground pins minimize coupling noise and preserve signal integrity in mixed-signal operation |
| PA0–PA7, PB0–PB7, etc. | GPIO with alternate functions | Each port supports UART, SSI, I²C, PWM, ADC input, or comparator input - enabling flexible peripheral mapping without external logic |
| PH0–PH1 | Crystal oscillator inputs | Supports 4–25 MHz crystal for precise system clock generation; internal PLL enables 50 MHz core frequency |
| nRST | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external watchdog or power-monitoring ICs |
| TCK, TMS, TDI, TDO | JTAG debug interface | Full boundary-scan and SWD-compatible debugging - essential for firmware validation in safety-critical control loops |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Control Peripherals | 6 × 16-bit PWM timers with configurable dead-band, fault shutdown, and synchronous update - eliminates need for external motor gate driver logic |
| Hardware-Accelerated ADC Sequencing | 4 independent sample sequencers with trigger sources (PWM, timer, software) - enables synchronized current/voltage sampling across motor phases |
| Dual Analog Comparators | Each with programmable hysteresis and selectable internal reference - supports overcurrent detection and fast trip response (< 1 µs propagation) |
| Memory Protection Unit (MPU) | Configurable region-based access control for flash, SRAM, and peripherals - enforces software partitioning in multi-task RTOS environments |
| Wake-on-Interrupt Sleep Modes | Three low-power sleep states (Sleep, Deep-Sleep, Hibernate) with selective peripheral wake capability - extends battery life in portable industrial tools |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed and torque control of BLDC motors in conveyor systems and pumps. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithm with synchronized PWM and ADC sampling. Use Value: On-chip PWM timers with dead-band and fault inputs eliminate external logic, reducing BOM count and PCB area by >30% versus discrete solutions. | Use Scenario: Battery-powered environmental sensor hub measuring temperature, humidity, and air quality. IC Role / Device Role / Timing Role: Low-power host controller managing I²C sensors, ADC readings, and UART telemetry transmission. Use Value: Hibernate mode with RTC wake and GPIO-triggered interrupts achieves <2 µA standby current, extending 2-AA battery life to >2 years. |
| Programmable Logic Controller (PLC) I/O Module | Heating/Ventilation Control Unit |
Use Scenario: DIN-rail mounted I/O expansion module with digital input filtering and analog input conditioning. IC Role / Device Role / Timing Role: Deterministic scan engine processing 16-channel digital inputs and 4-channel analog inputs at 10 ms cycle time. Use Value: Integrated 10-bit ADC with hardware averaging reduces external anti-aliasing filter complexity and improves measurement repeatability by ±0.5 LSB. | Use Scenario: Residential HVAC control board regulating compressor, fan, and valve actuation based on thermostat feedback. IC Role / Device Role / Timing Role: Central controller executing PID loops, managing user interface, and communicating via UART to display panel. Use Value: Dual UARTs enable simultaneous local HMI communication and remote diagnostics via RS-485, eliminating need for external level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S811-IQN50-C2T | Same core and package, but with 128 KB flash and no analog comparator | Better suited for larger firmware images; lacks hardware overcurrent protection path | Select when firmware size exceeds 64 KB and comparator-based fault detection is not required |
| TM4C123GH6PM | Successor family with 80 MHz Cortex-M4F, FPU, USB, and enhanced ADC (12-bit, 2 MSPS) | Enables floating-point math and higher-resolution sensing; requires PCB redesign due to 64-pin TQFP package | Choose for new designs needing higher performance, USB connectivity, or future-proofing beyond LM3S lifecycle |
Compared with LM3S808-IQN50-C2T, LM3S811-IQN50-C2T offers more flash but removes analog comparator functionality critical for fast fault response, while TM4C123GH6PM delivers significantly higher compute throughput and precision but mandates layout changes and toolchain migration.
Availability
LM3S808-IQN50-C2T is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and HVAC control units requiring stable component supply and long-term production continuity.
Supply support for LM3S808-IQN50-C2T 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 technologies, with decades of experience in industrial and automotive electronics.
The Stellaris LM3S series was engineered specifically for deterministic real-time control in cost-sensitive industrial applications - balancing performance, integration, and power efficiency without external support components.
FAQ
What is the maximum operating frequency of the LM3S808-IQN50-C2T?
The LM3S808-IQN50-C2T operates at a maximum system clock frequency of 50 MHz, achieved via internal PLL multiplication of an external 4–25 MHz crystal or oscillator input. This frequency is fully supported across all operating conditions specified in the datasheet, including the full –40°C to +85°C industrial temperature range. The LM3S808-IQN50-C2T maintains timing compliance at this speed without derating.
Does the LM3S808-IQN50-C2T include an integrated analog-to-digital converter?
Yes, the LM3S808-IQN50-C2T integrates a 10-bit, 8-channel SAR ADC with up to 1 MSPS sampling rate, four independent sample sequencers, hardware averaging (up to 64 samples), and programmable trigger sources including PWM events and timers. This ADC is explicitly documented in the LM3S808 datasheet Section 10 and supports differential input modes for noise-rejecting measurements in the LM3S808-IQN50-C2T.
What debug interface does the LM3S808-IQN50-C2T support?
The LM3S808-IQN50-C2T supports standard JTAG (IEEE 1149.1) via dedicated TCK, TMS, TDI, TDO, and TRST pins, enabling full boundary-scan testing, flash programming, and real-time debugging using TI's ICDI or third-party JTAG adapters. It also supports Serial Wire Debug (SWD) mode through shared JTAG pins, providing reduced pin count debugging without sacrificing functionality in the LM3S808-IQN50-C2T.
Is the LM3S808-IQN50-C2T pin-compatible with other Stellaris LM3S devices?
No, the LM3S808-IQN50-C2T is not pin-compatible with other LM3S devices outside its specific variant group. While it shares the 100-pin LQFP package with some members (e.g., LM3S811), differences in peripheral mapping, power pin allocation, and reset configuration prevent direct substitution. Pin compatibility must be verified per device using the Signal Tables in the LM3S808 datasheet - the LM3S808-IQN50-C2T has unique pin assignments confirmed in Section 16.
What is the flash memory endurance specification for the LM3S808-IQN50-C2T?
The LM3S808-IQN50-C2T flash memory is rated for a minimum of 10,000 erase/write cycles per sector, as specified in Section 18.1.6 of the official Texas Instruments datasheet. Data retention is guaranteed for 20 years at 85°C or indefinitely at lower temperatures. These values apply directly to the LM3S808-IQN50-C2T and are validated during production test per TI's quality standards.
LM3S808-IQN50-C2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 800
- 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, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S808-IQN50-C2T FAQ
1.How can I place an order for LM3S808-IQN50-C2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S808-IQN50-C2T 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 LM3S808-IQN50-C2T reliable?
The price and inventory of LM3S808-IQN50-C2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S808-IQN50-C2T is usually 5 days.
3.What payment methods are accepted for LM3S808-IQN50-C2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S808-IQN50-C2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S808-IQN50-C2T?
LM3S808-IQN50-C2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S808-IQN50-C2T 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 LM3S808-IQN50-C2T?
For technical support, including LM3S808-IQN50-C2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S808-IQN50-C2T requirements.
6.How does Aetrix verify that LM3S808-IQN50-C2T is sourced from the original manufacturer or authorized distributors?
All LM3S808-IQN50-C2T 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 LM3S808-IQN50-C2T meets industry standards.
7.What is the process for return or replacement of LM3S808-IQN50-C2T?
All LM3S808-IQN50-C2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S808-IQN50-C2T, 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 LM3S808-IQN50-C2T part is unused and in its original packaging.
Return procedure for LM3S808-IQN50-C2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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