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Texas Instruments LM3S1165-IQC50-A2
- Part No.:
- LM3S1165-IQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S1165-IQC50-A2.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,517
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Product details
Overview
LM3S1165-IQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated hibernation module, 8-channel 12-bit ADC, and dual UARTs. It operates at 50 MHz, supports 1.8–3.6 V supply, and targets real-time industrial control and battery-powered embedded systems.
For engineers reviewing the LM3S1165-IQC50-A2 datasheet, LM3S1165-IQC50-A2 pinout, LM3S1165-IQC50-A2 application, or LM3S1165-IQC50-A2 equivalent, key selection criteria include hibernation-capable power management, on-chip RTC with battery backup, motor control peripherals (PWM, QEI), and Cortex-M3 debug support via JTAG/SWD.
Technical Context
The LM3S1165-IQC50-A2 implements the ARMv7-M architecture with NVIC, SysTick, MPU, and TPIU for deterministic real-time execution. It integrates a hibernation module with RTC, battery-backed memory, and wake-up sources including external pins and RTC match events.
Peripherals include two UARTs (one with IrDA SIR), two SSI modules, I²C master/slave, eight 16-bit GPTM channels (configurable as 32-bit timers or PWM), and an analog comparator. All digital I/Os are 5-V tolerant with programmable slew rate and pull-up/down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max operation - enables deterministic interrupt latency & real-time task scheduling |
| Memory | 256 KB flash + 64 KB SRAM - sufficient for standalone firmware with RTOS and protocol stacks |
| ADC | 12-bit, 8-channel, 1 MSPS - supports precision sensor acquisition in industrial monitoring |
| Hibernation Module | RTC + battery-backed RAM + wake-on-RTC-match - enables µA-level sleep for long-life battery systems |
| I/O Voltage | 5-V tolerant inputs - simplifies interface to legacy logic and industrial sensors without level shifters |
| Operating Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion or 3.3 V rail systems |
| Package | 100-pin LQFP (14 × 14 mm) - standard surface-mount footprint with full peripheral pin access |
Pinout & Package
LM3S1165-IQC50-A2 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully defined per TI SPMS014I datasheet Rev I.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated analog/digital/core rails ensure noise isolation for ADC and clock domains |
| GND, GNDA, GNDC | Ground returns | Separate analog/digital/core ground planes reduce coupling and improve signal integrity |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | GPIO banks | Configurable as digital I/O, UART/SSI/I²C peripherals, or timer/PWM outputs with slew control |
| USB0VBUS, USB0ID, USB0DM, USB0DP | USB 2.0 Full-Speed interface | On-chip PHY supports device-mode USB communication without external transceiver |
| HIB, RTCCLK, HIBRST | Hibernation control | Direct connection to hibernation module for RTC timekeeping and wake-up event routing |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module with RTC | Retains time and 2 KB RAM on battery backup while consuming < 1.5 µA - extends battery life in remote sensors |
| Motor Control Peripherals | Two QEI modules + six PWM generator blocks - supports position/speed feedback and three-phase motor drive |
| Integrated USB 2.0 FS PHY | Full-speed USB device interface with internal transceiver - eliminates external USB IC and reduces BOM cost |
| 5-V Tolerant GPIO | All digital I/Os accept 0–5 V input regardless of VDD - enables direct interfacing to 5 V logic and industrial sensors |
| Programmable Slew Rate | Configurable edge rates per pin - reduces EMI and allows optimization for speed vs. noise in mixed-signal layouts |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers and pump drives using encoder feedback and PWM output. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithms, managing QEI input, generating synchronized PWM waveforms, and handling fault interrupts. Use Value: Integrated QEI and six PWM outputs eliminate external timing ICs; hibernation mode enables low-power standby during idle periods. | Use Scenario: Residential electricity meter with tamper detection, pulse counting, and secure data logging over RS-485. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC sampling, RTC-based billing intervals, secure flash storage, and UART/RS-485 physical layer. Use Value: 12-bit ADC with hardware averaging improves measurement accuracy; battery-backed RTC ensures time continuity during main power loss. |
| Battery-Powered Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Wireless environmental sensor node measuring temperature, humidity, and CO₂ with periodic wake-up and BLE transmission. IC Role / Device Role / Timing Role: Low-power host MCU coordinating sensor reads, RTC-triggered wake-up, flash logging, and serial interface to radio module. Use Value: Sub-µA hibernation current and integrated RTC enable multi-year battery life; 5-V tolerant I/O simplifies connection to analog sensors. | Use Scenario: DIN-rail mounted I/O expansion module converting discrete 24 V DC inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol gateway and digital I/O conditioner with galvanically isolated inputs, debounce logic, and UART-to-Modbus framing. Use Value: Dual UARTs allow simultaneous RS-485 Modbus and local debug port; GPIO programmability supports configurable input filtering and edge detection. |
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 core, 256 KB flash, but adds Ethernet MAC + PHY and USB OTG - larger die, higher power | Requires Ethernet connectivity; not suitable where hibernation current or cost sensitivity dominates | Select LM3S1165-IQC50-A2 when hibernation, low active power, and minimal peripheral set are prioritized |
| Tiva C TM4C123GH6PM | Successor family: Cortex-M4F, 80 MHz, 256 KB flash, same pinout - enhanced FPU, newer errata fixes, extended lifecycle | Supports floating-point math and higher throughput; requires minor firmware adaptation due to register map differences | Choose TM4C123GH6PM for new designs needing longer-term availability and performance headroom |
Compared with LM3S1165-IQC50-A2, LM3S1968-IQC50-A2 adds Ethernet at the cost of higher hibernation current and complexity, while TM4C123GH6PM offers architectural upgrades and extended support - both require validation for pin-compatible replacement in existing PCBs.
Availability
LM3S1165-IQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, battery-powered sensor nodes, and PLC I/O modules requiring stable component supply and long-term obsolescence planning.
Supply support for LM3S1165-IQC50-A2 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 microcontrollers.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications demanding low power, rich analog integration, and deterministic Cortex-M3 performance - targeting industrial automation, building control, and portable instrumentation.
FAQ
What is the maximum operating frequency of the LM3S1165-IQC50-A2?
The LM3S1165-IQC50-A2 operates at a maximum system clock frequency of 50 MHz, as specified in the Texas Instruments SPMS014I datasheet. This frequency is achieved using the internal PLL with an external crystal or oscillator input. The Cortex-M3 core executes instructions at this rate, supporting real-time response for motor control and sensor acquisition tasks in the LM3S1165-IQC50-A2.
Does the LM3S1165-IQC50-A2 support hibernation mode with battery backup?
Yes, the LM3S1165-IQC50-A2 includes a dedicated hibernation module that supports RTC operation and retention of 2 KB of SRAM while drawing less than 1.5 µA from a coin-cell battery. This feature is documented in Section 6 of the SPMS014I datasheet and enables multi-year operation in battery-powered sensor and metering applications using the LM3S1165-IQC50-A2.
Is the LM3S1165-IQC50-A2 pin-compatible with other Stellaris LM3S devices?
The LM3S1165-IQC50-A2 uses a 100-pin LQFP package shared with several LM3S family members, including LM3S1968 and LM3S8962, but pin functions differ across variants. While mechanical footprint matches, signal mapping and peripheral availability vary - for example, LM3S1968 adds Ethernet pins not present in LM3S1165-IQC50-A2. Direct substitution requires verification against each device's pinout table in the respective datasheet.
What debug interfaces does the LM3S1165-IQC50-A2 support?
The LM3S1165-IQC50-A2 supports JTAG and SWD (Serial Wire Debug) interfaces for programming and real-time debugging. The JTAG TAP controller is integrated per ARM CoreSight standards, enabling breakpoints, watchpoints, and memory inspection via tools like TI Code Composer Studio or third-party J-Link adapters. These capabilities are fully documented in Sections 4 and 2.2 of the LM3S1165-IQC50-A2 datasheet.
Can the LM3S1165-IQC50-A2 operate from a single 3.3 V supply?
Yes, the LM3S1165-IQC50-A2 operates across a 1.8 V to 3.6 V supply range, making it fully compatible with standard 3.3 V systems. All I/Os are 5-V tolerant, allowing safe interfacing with 5 V peripherals without level shifters. This supply flexibility is confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections of the LM3S1165-IQC50-A2 datasheet (SPMS014I).
LM3S1165-IQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Bulk
- 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-A2 FAQ
1.How can I place an order for LM3S1165-IQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1165-IQC50-A2 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-A2 reliable?
The price and inventory of LM3S1165-IQC50-A2 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-A2 is usually 5 days.
3.What payment methods are accepted for LM3S1165-IQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1165-IQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1165-IQC50-A2?
LM3S1165-IQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1165-IQC50-A2 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-A2?
For technical support, including LM3S1165-IQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1165-IQC50-A2 requirements.
6.How does Aetrix verify that LM3S1165-IQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S1165-IQC50-A2 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-A2 meets industry standards.
7.What is the process for return or replacement of LM3S1165-IQC50-A2?
All LM3S1165-IQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1165-IQC50-A2, 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-A2 part is unused and in its original packaging.
Return procedure for LM3S1165-IQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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