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Texas Instruments LM3S1165-IQC50-A2T
- Part No.:
- LM3S1165-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S1165-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,072
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Product details
Overview
LM3S1165-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated hibernation module, 8-channel 12-bit ADC, and dual UARTs. It operates at 50 MHz, supports -40°C to +85°C industrial temperature range, and targets motor control and embedded real-time systems requiring low-power hibernation.
For engineers reviewing the LM3S1165-IQC50-A2T datasheet, LM3S1165-IQC50-A2T pinout, LM3S1165-IQC50-A2T application, or LM3S1165-IQC50-A2T equivalent, key selection criteria include hibernation current (1.7 µA), RTC-backed battery operation, integrated analog comparators, PWM timing resolution, and JTAG/SWD debug interface compatibility.
Technical Context
The LM3S1165-IQC50-A2T implements the ARM Cortex-M3 core with Thumb-2 instruction set, NVIC with 64 interrupt lines, and SysTick timer. It integrates a hibernation module with RTC, battery-backed memory, and wake-up on external event or time match.
Peripherals include two UARTs supporting IrDA/SIR, one I²C master/slave, one SSI, eight 16-bit general-purpose timers (with PWM and RTC modes), and an analog subsystem comprising 8-channel 12-bit ADC, two analog comparators, and internal temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, executes Thumb-2 instructions for deterministic real-time response |
| Max Clock Speed | 50 MHz - enables 50 MIPS throughput for motor control loop execution within 20 µs cycle |
| Flash / RAM | 256 KB flash (in-system programmable) + 32 KB SRAM - sufficient for bootloader, RTOS, and application code |
| Hibernate Current | 1.7 µA - allows multi-year battery life in metering or remote sensor applications |
| ADC | 8-channel, 12-bit, 1 MSPS - supports simultaneous sampling of motor phase currents and DC bus voltage |
| Temperature Range | -40°C to +85°C - qualified for industrial motor drives and factory automation environments |
| Package | 100-pin LQFP (14 mm × 14 mm) - standard surface-mount footprint compatible with automated assembly |
Pinout & Package
LM3S1165-IQC50-A2T is housed in a 100-pin LQFP package (JEDEC MO-137AC) with 0.5 mm pitch, exposed thermal pad, and standard pin numbering (pin 1 marked by dot). Pinout validated per TI SPMS014I datasheet Rev I, July 2014.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VDDA / VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails enable noise isolation for ADC and PLL stability |
| GND / GNDA / GNDC | Ground returns | Dedicated analog ground (GNDA) and core ground (GNDC) reduce coupling between signal domains |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | GPIO banks | Configurable as inputs/outputs, with slew-rate control, weak pull-up/down, and interrupt capability per pin |
| U0RX / U0TX / U1RX / U1TX | UART I/O | Dual UART interfaces support full-duplex serial communication with hardware flow control and FIFO buffering |
| SSI0CLK / SSI0FSS / SSI0RX / SSI0TX | SSI interface | Four-wire synchronous serial interface compliant with SPI, Microwire, and TI synchronous protocols |
| I2C0SCL / I2C0SDA | I²C interface | Standard-mode (100 kbps) and fast-mode (400 kbps) I²C master/slave with arbitration and clock stretching |
| ADC0CH0–ADC0CH7 | Analog inputs | Eight dedicated ADC input channels mapped to GPIO pins, supporting single-ended or differential sampling |
| XTAL / XTAL32K | Clock inputs | Primary 1–25 MHz crystal oscillator input and optional 32.768 kHz RTC crystal input for hibernation timing |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Enables ultra-low-power state with RTC, battery-backed RAM (2 KB), and wake-up on alarm or external pin - eliminates need for external RTC chip |
| Motor Control Timers | Eight 16-bit timers configurable as PWM generators with dead-band insertion, fault shutdown, and quadrature encoder input - directly supports BLDC and stepper motor commutation |
| Analog Subsystem | Integrated 12-bit ADC with hardware averaging, two analog comparators with internal reference, and temperature sensor - reduces BOM count in closed-loop sensing |
| Debug Interface | JTAG and SWD support via dedicated TCK/TMS/TDI/TDO/SWCLK/SWDIO pins - enables full-speed debugging without halting real-time operation |
| Memory Protection | MPU with eight regions and configurable access permissions - enforces privilege separation between bootloader, RTOS kernel, and application tasks |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop control of brushless DC motors in HVAC blowers and pump drives using field-oriented control (FOC). IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation with sub-microsecond timing accuracy, and ADC sampling synchronized to PWM edges. Use Value: On-chip hibernation and RTC allow scheduled wake-up for periodic diagnostics without external supervisor IC. | Use Scenario: Electricity meter with tamper detection, load profiling, and time-of-use billing over 10+ year deployment. IC Role / Device Role / Timing Role: System controller managing metrology ADC, LCD driver, IR/RF communication, and secure firmware updates. Use Value: 1.7 µA hibernate current extends lithium primary battery life beyond 12 years; integrated RTC maintains accurate time during power loss. |
| Factory Automation I/O Module | Medical Sensor Hub |
Use Scenario: DIN-rail mounted remote I/O node collecting analog sensor data and controlling solenoids/relays across Modbus RTU network. IC Role / Device Role / Timing Role: Protocol stack processor with dual UARTs (one for RS-485 Modbus, one for debug), GPIO expansion, and watchdog supervision. Use Value: Dual UARTs with hardware FIFOs prevent overrun during burst Modbus polling; hibernation mode reduces standby power in unpowered segments. | Use Scenario: Portable patient monitor aggregating ECG, SpO₂, and temperature signals before wireless transmission. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog front-end conditioning, oversampling, and data compression prior to BLE transmission. Use Value: Integrated 12-bit ADC with hardware averaging improves SNR for low-amplitude biomedical signals; battery-backed RAM preserves last-measurement context during battery swaps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Tiva C TM4C123GH6PM | Successor part with same Cortex-M4F core, 80 MHz, 256 KB flash, but no hibernation module; uses different pinout and lacks battery-backed RAM | Requires external RTC and backup capacitor for timekeeping; better suited for higher-performance compute tasks than ultra-low-power sleep | Select TM4C123GH6PM when floating-point math or USB host capability is required; avoid if hibernation current <2 µA is mandatory |
| STM32F103VCT6 | ARM Cortex-M3 at 72 MHz, 256 KB flash, 48 KB RAM, but no integrated hibernation module or battery-backed memory; different peripheral mix (no hibernation logic, no dedicated comparator references) | Needs external RTC and supervisor IC for battery-backed timekeeping; ADC lacks hardware averaging and differential mode | Choose STM32F103VCT6 for cost-sensitive designs where hibernation is handled externally; verify GPIO remapping for legacy LM3S1165-IQC50-A2T firmware porting |
Compared with TM4C123GH6PM and STM32F103VCT6, the LM3S1165-IQC50-A2T uniquely delivers sub-2 µA hibernation with integrated RTC and battery-backed RAM-critical for battery-powered metering and sensor nodes where external components increase size, cost, and failure risk.
Availability
LM3S1165-IQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, factory automation I/O modules, and portable medical sensor hubs requiring stable component supply and long-term lifecycle support.
Supply support for LM3S1165-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as the first ARM Cortex-M3-based microcontroller family for deterministic real-time control in resource-constrained industrial environments, emphasizing low-power hibernation, integrated analog peripherals, and robust debug infrastructure.
FAQ
What is the maximum operating frequency of the LM3S1165-IQC50-A2T?
The LM3S1165-IQC50-A2T operates at a maximum system clock frequency of 50 MHz, as specified in the Texas Instruments SPMS014I datasheet. This speed is achieved using the internal PLL driven by the main oscillator or an external crystal. The 50 MHz rating applies across the full industrial temperature range (-40°C to +85°C) and ensures deterministic interrupt latency and real-time control loop execution for motor drive applications. The LM3S1165-IQC50-A2T does not support overclocking beyond this rated frequency.
Does the LM3S1165-IQC50-A2T support hibernation with battery backup?
Yes, the LM3S1165-IQC50-A2T includes a dedicated hibernation module that supports battery-backed operation. When powered from a coin-cell or supercapacitor on the VBAT pin, it maintains the 2 KB of battery-backed RAM, RTC counter, and alarm registers while drawing only 1.7 µA. The hibernation module supports wake-up events including RTC match, external GPIO assertion, and low-battery detection. This functionality is fully integrated - no external RTC or supervisor IC is required. The LM3S1165-IQC50-A2T implements this feature per Section 6 of the SPMS014I datasheet.
What debug interfaces are supported by the LM3S1165-IQC50-A2T?
The LM3S1165-IQC50-A2T supports both JTAG and Serial Wire Debug (SWD) interfaces via dedicated pins (TCK, TMS, TDI, TDO, SWCLK, SWDIO). These interfaces enable full-featured debugging including breakpoints, watchpoints, register inspection, and flash programming using standard tools such as TI's ICDI-based debuggers or third-party J-Link adapters. The debug architecture includes an integrated SWO trace port for real-time printf-style output without halting CPU execution. All debug features are documented in Sections 4 and 2.2 of the LM3S1165-IQC50-A2T datasheet.
How many analog-to-digital converter (ADC) channels does the LM3S1165-IQC50-A2T have?
The LM3S1165-IQC50-A2T integrates a single 12-bit successive-approximation ADC with eight input channels (ADC0CH0 through ADC0CH7), each assignable to specific GPIO pins. It supports hardware sample averaging across up to 64 samples to improve effective resolution, differential input mode for noise rejection, and programmable trigger sources including PWM events and timer matches. The ADC achieves 1 MSPS maximum sampling rate and includes an internal temperature sensor channel. These capabilities are defined in Section 11 of the SPMS014I datasheet for the LM3S1165-IQC50-A2T.
Is the LM3S1165-IQC50-A2T pin-compatible with other Stellaris LM3S devices?
No, the LM3S1165-IQC50-A2T is not universally pin-compatible with other LM3S devices. While it shares the 100-pin LQFP package with some variants (e.g., LM3S1968), pin functions differ significantly across the family due to varying peripheral sets and routing constraints. For example, ADC input assignments, UART mappings, and hibernation control pins are not consistent across all LM3S parts. Migration requires verification against the specific device's datasheet and layout review. The LM3S1165-IQC50-A2T pinout is unique to its feature set and must be treated as a distinct footprint.
LM3S1165-IQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- 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:
- 43
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K 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:
LM3S1165-IQC50-A2T FAQ
1.How can I place an order for LM3S1165-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1165-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 LM3S1165-IQC50-A2T reliable?
The price and inventory of LM3S1165-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 LM3S1165-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S1165-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1165-IQC50-A2T transactions.
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4.How is shipping managed for LM3S1165-IQC50-A2T?
LM3S1165-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1165-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 LM3S1165-IQC50-A2T?
For technical support, including LM3S1165-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1165-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S1165-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S1165-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 LM3S1165-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S1165-IQC50-A2T?
All LM3S1165-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1165-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 LM3S1165-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S1165-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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