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Texas Instruments LM3S808-IQN50-C2
- Part No.:
- LM3S808-IQN50-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S808-IQN50-C2.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,381
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Product details
Overview
LM3S808-IQN50-C2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 64 KB flash, 24 KB SRAM, integrated ADC (10-bit, 1 MSPS), dual UARTs, I²C, SSI, and PWM-capable timers. It operates at up to 50 MHz and supports industrial temperature range (–40°C to +85°C) in a 100-pin LQFP package. It targets motor control and embedded automation systems requiring real-time responsiveness and analog integration.
For engineers reviewing the LM3S808-IQN50-C2 datasheet, LM3S808-IQN50-C2 pinout, LM3S808-IQN50-C2 application, or LM3S808-IQN50-C2 equivalent, key selection criteria include its 50 MHz CPU clock, on-chip 10-bit ADC with hardware averaging, dual UART support with FIFOs, integrated analog comparator, and industrial-grade thermal rating - all verified in TI's SPMS149I production datasheet.
Technical Context
The LM3S808-IQN50-C2 implements the ARM Cortex-M3 core with nested vectored interrupt controller (NVIC), SysTick timer, and memory protection unit (MPU). It integrates dedicated motor control peripherals including PWM generators with dead-band insertion and quadrature encoder interface logic.
Its analog subsystem includes a single 10-bit, 1 MSPS ADC with four sample sequencers and hardware averaging, plus two analog comparators with internal voltage reference. Serial connectivity comprises two UARTs, one I²C master/slave, and one SSI (SPI-compatible) interface - all independently clocked and interrupt-capable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, supports Thumb-2 instruction set for code density and real-time determinism |
| Max Clock Speed | 50 MHz - enables deterministic execution of control loops with sub-10 µs ISR latency |
| Flash Memory | 64 KB - sufficient for bootloader + application firmware with field-upgrade capability |
| SRAM | 24 KB - supports real-time data buffering, stack allocation, and DMA descriptors |
| ADC Resolution & Rate | 10-bit, 1 MSPS - captures fast analog transients (e.g., current sensing in motor drives) |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without external thermal derating |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard surface-mount reflow and test fixtures |
Pinout & Package
LM3S808-IQN50-C2 is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with exposed thermal pad, JEDEC MS-026AC compliant. Pinout supports full GPIO multiplexing, dedicated JTAG/SWD debug, and peripheral-specific signal routing (e.g., PWM outputs on Port B/C, ADC inputs on Port E).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital core (VDDC), analog (VDDA), and I/O (VDD) rails - require separate 3.3 V filtering per datasheet Section 18.1.2 |
| GND, GNDA, GNDC | Ground returns | Analog ground (GNDA) must be isolated from digital ground except at single-point star connection |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO pins | Configurable as digital I/O, UART/SSI/I²C functions, or ADC inputs - e.g., PE0–PE3 map to ADC0 channels 0–3 |
| PA0–PA7, PB0–PB7 | PWM outputs | Eight PWM generator outputs (PWM0–PWM7) with configurable dead-band and fault shutdown |
| PC0–PC7 | UART0/UART1 signals | UART0 uses PC4/PC5; UART1 uses PC6/PC7 - both support 16-byte FIFO and auto-baud detection |
| JTAG/SWD pins | Debug interface | TCK/TMS/TDO/TDI/SWCLK/SWDIO - enable full-speed debugging and flash programming via TI XDS100v3 or compatible |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Analog Comparator | Two rail-to-rail comparators with programmable hysteresis and interrupt output - enables overvoltage/undervoltage monitoring without external components |
| Hardware ADC Averaging | Up to 64-sample hardware averaging per conversion - reduces noise in current/voltage sensing without CPU overhead |
| Dual UART with FIFO | Each UART has 16-deep TX/RX FIFO and modem control signals - supports robust host communication and RS-485 half-duplex mode |
| PWM Generator with Dead-Band | Three independent PWM modules generating complementary outputs with adjustable dead-time - essential for three-phase motor gate drive safety |
| Quadrature Encoder Interface | Dedicated QEI module on Port D - directly decodes rotary encoder position/speed with 32-bit counter and index capture |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed/torque control of BLDC motors in HVAC blowers and conveyor drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms, PWM generation, and ADC sampling of phase currents. Use Value: 50 MHz Cortex-M3 core and hardware PWM dead-band ensure precise timing alignment between current sampling and gate switching - minimizing torque ripple. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and pressure data. IC Role / Device Role / Timing Role: Low-power system controller managing sensor polling, ADC conversion, and UART/SSI data aggregation. Use Value: Integrated 10-bit ADC with hardware averaging delivers stable readings under varying supply conditions; sleep modes reduce active current to <100 µA. |
| Programmable Logic Controller (PLC) I/O Module | Industrial Human-Machine Interface (HMI) |
Use Scenario: DIN-rail mounted I/O expansion module with digital input filtering and relay output control. IC Role / Device Role / Timing Role: Deterministic GPIO scanning, debounce logic, and watchdog supervision of field I/O states. Use Value: Dedicated GPIO interrupt masking and edge-triggered wake-up allow reliable 10 ms scan cycles - meeting IEC 61131-2 response requirements. | Use Scenario: Touch-enabled panel display with serial command interface to main controller. IC Role / Device Role / Timing Role: Local UI processor handling button debouncing, LED dimming via PWM, and UART command parsing. Use Value: Dual UARTs enable simultaneous host command reception and debug logging; 24 KB SRAM buffers graphics assets and touch event queues. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S811-IQN50-C2 | Same core and package, but includes CAN controller and 128 KB flash - no ADC hardware averaging or QEI module | Better suited for vehicle network gateways; lacks motor control-specific peripherals present in LM3S808-IQN50-C2 | Select LM3S811 only if CAN bus integration is required and ADC averaging/QEI are unnecessary |
| TM4C123GH6PM | Successor family with 80 MHz Cortex-M4F, 256 KB flash, FPU, and enhanced ADC (12-bit, 1 MSPS) - pin-compatible but requires PCB revision due to different power pin layout | Enables floating-point math for advanced control; higher memory supports RTOS and protocol stacks | Choose TM4C123GH6PM for new designs needing performance headroom or FPU; LM3S808-IQN50-C2 remains valid for cost-sensitive legacy replacements |
Compared with LM3S811-IQN50-C2 and TM4C123GH6PM, the LM3S808-IQN50-C2 offers optimal balance of motor control peripherals (QEI, PWM dead-band), analog integration (ADC averaging, comparators), and industrial temperature rating - making it uniquely suitable for cost-constrained embedded motion control where CAN or FPU are not required.
Availability
LM3S808-IQN50-C2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and HMI subsystems requiring stable component supply and long-term lifecycle assurance.
Supply support for LM3S808-IQN50-C2 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 since 1930.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time industrial and motor control applications - emphasizing integrated analog peripherals, deterministic interrupt latency, and industrial-grade reliability without external support components.
FAQ
What is the maximum operating frequency of the LM3S808-IQN50-C2?
The LM3S808-IQN50-C2 operates at a maximum CPU clock frequency of 50 MHz, as specified in Section 17 of the SPMS149I datasheet. This frequency is achieved using the internal PLL with an external crystal or oscillator input, and it defines the upper limit for deterministic instruction execution and peripheral timing - critical for motor control loop deadlines and ADC sampling consistency in the LM3S808-IQN50-C2.
Does the LM3S808-IQN50-C2 support hardware-based ADC averaging?
Yes, the LM3S808-IQN50-C2 supports hardware averaging of up to 64 samples per ADC conversion sequence, as documented in Section 10.3.3 of the datasheet. This feature reduces quantization noise and improves effective resolution without consuming CPU cycles - a key advantage for current sensing and precision analog measurement in the LM3S808-IQN50-C2.
What debug interfaces are supported by the LM3S808-IQN50-C2?
The LM3S808-IQN50-C2 supports both JTAG and SWD (Serial Wire Debug) interfaces, with dedicated pins mapped to TCK/TMS/TDO/TDI and SWCLK/SWDIO. These interfaces enable full-speed debugging, flash programming, and real-time trace via compatible tools such as TI's ICDI-based LaunchPads or third-party J-Link debuggers - all verified in Sections 4 and 2.2 of the LM3S808-IQN50-C2 datasheet.
Is the LM3S808-IQN50-C2 qualified for industrial temperature operation?
Yes, the LM3S808-IQN50-C2 is rated for operation from –40°C to +85°C ambient temperature, as confirmed in Section 17 (Operating Characteristics) of the SPMS149I datasheet. This qualification ensures reliable performance in factory automation, motor drives, and outdoor equipment - a defining specification for the LM3S808-IQN50-C2 in industrial deployments.
What motor control peripherals are integrated into the LM3S808-IQN50-C2?
The LM3S808-IQN50-C2 integrates three PWM generator modules supporting complementary outputs with programmable dead-band, a dedicated quadrature encoder interface (QEI) module, and analog comparators for overcurrent detection. These peripherals are explicitly listed in Section 1.1 and detailed in Chapters 8 and 14 of the datasheet - enabling complete three-phase motor control without external ICs in the LM3S808-IQN50-C2.
LM3S808-IQN50-C2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 800
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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-C2 FAQ
1.How can I place an order for LM3S808-IQN50-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S808-IQN50-C2 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-C2 reliable?
The price and inventory of LM3S808-IQN50-C2 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-C2 is usually 5 days.
3.What payment methods are accepted for LM3S808-IQN50-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S808-IQN50-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S808-IQN50-C2?
LM3S808-IQN50-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S808-IQN50-C2 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-C2?
For technical support, including LM3S808-IQN50-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S808-IQN50-C2 requirements.
6.How does Aetrix verify that LM3S808-IQN50-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S808-IQN50-C2 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-C2 meets industry standards.
7.What is the process for return or replacement of LM3S808-IQN50-C2?
All LM3S808-IQN50-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S808-IQN50-C2, 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-C2 part is unused and in its original packaging.
Return procedure for LM3S808-IQN50-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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