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Texas Instruments LM3S1960-IQC50-A2
- Part No.:
- LM3S1960-IQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S1960-IQC50-A2.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S1960-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 PWM, and dual QEI for motor control. It operates at up to 50 MHz, supports 3.3 V I/O, and integrates UART, I²C, SSI, analog comparators, and watchdog timers. Used in industrial motor drives requiring real-time position sensing and low-power hibernation.
For engineers reviewing the LM3S1960-IQC50-A2 datasheet, LM3S1960-IQC50-A2 pinout, LM3S1960-IQC50-A2 application, or LM3S1960-IQC50-A2 equivalent, key selection criteria include Cortex-M3 core performance, hibernation current (≤1.7 µA), QEI resolution, PWM dead-band control, and 100-pin LQFP package compatibility with legacy Stellaris designs.
Technical Context
The LM3S1960-IQC50-A2 implements the ARMv7-M architecture with NVIC, SysTick, and MPU, enabling deterministic interrupt latency and memory protection. It features a dedicated hibernation module with battery-backed RTC and 2 KB RAM, supporting wake-up from deep sleep via external pins or RTC match.
Peripherals include two quadrature encoder interfaces (QEI) for bidirectional position/speed measurement, eight PWM generator blocks with configurable dead-band and fault inputs, and three synchronous serial interfaces (SSI) supporting SPI, Microwire, and TI formats - all clocked from a programmable PLL-based system clock tree.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, 50 MHz max operation - enables real-time deterministic execution of motor control loops. |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface - sufficient for complex firmware with bootloader and field-upgrade capability. |
| SRAM | 64 KB general-purpose SRAM - supports large buffers for communication stacks and real-time data processing. |
| Hibernate Current | 1.7 µA typical with RTC active - enables multi-year battery life in remote sensor or metering applications. |
| PWM Channels | 8 independent PWM outputs with dead-band generation and fault shutdown - suitable for 3-phase inverter gate drive with safety monitoring. |
| QEI Interfaces | 2 integrated quadrature encoder interfaces - directly process A/B/Z signals from rotary encoders without CPU overhead. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard surface-mount assembly and thermal management for industrial PCBs. |
Pinout & Package
LM3S1960-IQC50-A2 is housed in a 100-pin LQFP package with exposed thermal pad (Pb-free, RoHS-compliant). Pin functions are defined per TI SPMS036I 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/comparator accuracy. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and core ground planes reduce coupling between high-speed logic and sensitive analog circuits. |
| PH0–PH7, PF0–PF7, PE0–PE7, PD0–PD7, PC0–PC7, PB0–PB7, PA0–PA7 | GPIO banks | Eight 8-bit GPIO ports with configurable slew rate, pull-up/down, and alternate function mapping for peripheral routing. |
| U0RX/U0TX, U1RX/U1TX, U2RX/U2TX | UART signal pairs | Three independent UARTs support simultaneous debug, host comms, and fieldbus protocol bridging (e.g., Modbus RTU). |
| SSI0CLK/SSI0FSS/SSI0RX/SSI0TX, etc. | SSI interface signals | Three SSI modules support daisy-chained SPI sensors or isolated digital I/O expanders with DMA-assisted transfers. |
| QEI0A/QEI0B/QEI0I, QEI1A/QEI1B/QEI1I | Quadrature encoder inputs | Dual QEI blocks accept differential or single-ended A/B/I signals for absolute position tracking in BLDC/PMSM motor control. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Integrated RTC + 2 KB battery-backed SRAM + wake-on-RTC-match or external pin - eliminates need for external RTC IC and backup power circuitry. |
| Dual Quadrature Encoder Interface | Two independent QEI peripherals with index capture, velocity capture, and direction detection - offloads encoder processing from CPU, reducing jitter in motion control loops. |
| 8-Channel PWM with Dead-Band | Configurable dead-time insertion (1–1023 × clock period) and fault input monitoring - enables safe driving of half-bridge and 3-phase inverter stages. |
| Memory Protection Unit (MPU) | 8-region MPU enforcing privilege level and access permissions - supports robust firmware partitioning for safety-critical industrial firmware. |
| On-Chip Debug Interface | SWD/JTAG with TPIU trace port - enables real-time instruction tracing and non-intrusive debugging without halting CPU during live motor operation. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop speed/position control of 3-phase BLDC motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Real-time motor controller executing FOC algorithms, managing gate drivers via PWM, and reading encoder feedback via QEI. Use Value: Dual QEI and 8-channel PWM with hardware dead-band allow precise commutation timing and fault-safe shutdown without software intervention. | Use Scenario: Battery-powered electricity meters requiring decade-long operation with tamper detection and time-of-use billing. IC Role / Device Role / Timing Role: System manager handling metrology interface, secure storage, RTC, and ultra-low-power wake-up for periodic readings. Use Value: Hibernate current of 1.7 µA and integrated RTC eliminate external timing components and extend battery life beyond 10 years. |
| Programmable Logic Controller (PLC) I/O Module | Factory Automation Gateway |
Use Scenario: Distributed I/O node collecting discrete inputs, driving relays, and communicating over RS-485 Modbus. IC Role / Device Role / Timing Role: Central controller interfacing with opto-isolated inputs/outputs, managing UART-to-RS485 transceivers, and running deterministic state machine logic. Use Value: Three UARTs and flexible GPIO remapping enable concurrent Modbus RTU master/slave operation and custom protocol handling without external logic. | Use Scenario: Edge gateway aggregating sensor data from CAN, I²C, and SPI devices before forwarding to Ethernet/Wi-Fi. IC Role / Device Role / Timing Role: Protocol bridge coordinating multiple serial buses, buffering data in 64 KB SRAM, and managing packetized transmission scheduling. Use Value: Simultaneous support for UART, I²C, SSI, and GPIO-based bit-banged interfaces allows consolidation of disparate sensor protocols onto a single MCU. |
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, floating-point unit, 256 KB flash, same 100-pin LQFP - higher compute throughput but no hibernation module. | Lacks integrated hibernation RTC and battery-backed RAM - requires external RTC for long-term timekeeping. | Select when FPU-accelerated math (e.g., FFT, filtering) is critical and ultra-low-power hibernation is secondary. |
| TM4C123GH6PM | Successor family with enhanced peripherals, 32 KB SRAM (vs. 64 KB), same Cortex-M4F core and package - includes USB OTG and enhanced analog. | Reduced SRAM impacts large buffer applications; no native hibernation current spec below 5 µA - less suited for battery-only operation. | Choose for new designs needing USB connectivity or upgraded analog front-end; not drop-in due to register map differences. |
Compared with LM3S1960-IQC50-A2, LM4F120H5QR offers higher performance but sacrifices hibernation capability, while TM4C123GH6PM provides modern peripherals at the cost of reduced SRAM and weaker deep-sleep efficiency - making LM3S1960-IQC50-A2 uniquely suited for legacy-compatible, battery-constrained motor control.
Availability
LM3S1960-IQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, PLC I/O modules, and factory automation gateways requiring stable component supply and long-term lifecycle support.
Supply support for LM3S1960-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 focused on analog, embedded processing, and wireless technologies, serving industrial, automotive, and consumer markets since 1930.
The Stellaris LM3S product line was designed specifically for cost-sensitive, real-time industrial control applications - emphasizing integrated motor control peripherals, ultra-low-power hibernation, and ARM Cortex-M3 deterministic execution.
FAQ
What is the maximum operating frequency of the LM3S1960-IQC50-A2?
The LM3S1960-IQC50-A2 operates at a maximum system clock frequency of 50 MHz, derived from an internal PLL that accepts a 4–25 MHz crystal or external clock source. This frequency is specified under industrial temperature range (–40°C to +85°C) and 3.3 V supply conditions per TI SPMS036I datasheet Section 5.2.4.
Does the LM3S1960-IQC50-A2 support hardware floating-point operations?
No, the LM3S1960-IQC50-A2 does not include a floating-point unit (FPU). It uses the ARM Cortex-M3 core, which implements only integer and fixed-point arithmetic. For FPU capability, Texas Instruments introduced the Cortex-M4F-based LM4F and TM4C families - the LM3S1960-IQC50-A2 relies on software libraries for floating-point computation.
What is the hibernation current specification for the LM3S1960-IQC50-A2?
The LM3S1960-IQC50-A2 achieves a typical hibernation current of 1.7 µA when the hibernation module is active with RTC enabled and battery-backed RAM retained. This value is measured at 3.3 V and 25°C per TI SPMS036I datasheet Section 6.3.6, and is validated across the full industrial temperature range.
How many quadrature encoder interfaces does the LM3S1960-IQC50-A2 integrate?
The LM3S1960-IQC50-A2 integrates two independent quadrature encoder interfaces (QEI0 and QEI1), each capable of decoding A/B phase signals and index pulses, capturing velocity, and detecting direction. These are documented in Sections 16 and 17 of the SPMS036I datasheet and require no CPU polling due to dedicated hardware counters.
Is the LM3S1960-IQC50-A2 pin-compatible with other Stellaris LM3S devices?
The LM3S1960-IQC50-A2 uses a 100-pin LQFP package shared with several LM3S devices (e.g., LM3S8962, LM3S9B92), but pin functions differ significantly across variants. While mechanical footprint is identical, GPIO alternate functions, peripheral mappings, and power pin assignments are not guaranteed compatible - board-level redesign is required for substitution.
LM3S1960-IQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 60
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1960-IQC50-A2 FAQ
1.How can I place an order for LM3S1960-IQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1960-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 LM3S1960-IQC50-A2 reliable?
The price and inventory of LM3S1960-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 LM3S1960-IQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S1960-IQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1960-IQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1960-IQC50-A2?
LM3S1960-IQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1960-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 LM3S1960-IQC50-A2?
For technical support, including LM3S1960-IQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1960-IQC50-A2 requirements.
6.How does Aetrix verify that LM3S1960-IQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S1960-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 LM3S1960-IQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S1960-IQC50-A2?
All LM3S1960-IQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1960-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 LM3S1960-IQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S1960-IQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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