My Inquiry
My Account
Texas Instruments LM3S1150-EQC50-A2T
- Part No.:
- LM3S1150-EQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S1150-EQC50-A2T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,253
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM3S1150-EQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated hibernation module, 4x UARTs, 2x SSI, I²C, PWM, QEI, and analog comparators-designed for industrial motor control and embedded automation systems requiring low-power operation and real-time responsiveness.
For engineers reviewing the LM3S1150-EQC50-A2T datasheet, LM3S1150-EQC50-A2T pinout, LM3S1150-EQC50-A2T application, or LM3S1150-EQC50-A2T equivalent, this page provides verified functional specifications, package mapping to LQFP-100, confirmed peripheral integration (including hibernation RTC and battery-backed memory), and validated alternative options for migration or second sourcing.
Technical Context
The LM3S1150-EQC50-A2T implements the ARM Cortex-M3 core at up to 50 MHz with NVIC, SysTick, MPU, and debug support via JTAG/SWD. It integrates a dedicated hibernation module with battery-backed RTC, 2 KB RAM, and wake-up on external event or time match-enabling ultra-low-power sleep states below 1.5 µA.
Peripherals include four UARTs supporting IrDA/SIR, two SSI controllers compatible with SPI/Microwire, an I²C master/slave interface, six PWM generator blocks with dead-band control, and a quadrature encoder interface with index and phase detection-targeting closed-loop motion control and sensor-integrated edge devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz-enables deterministic real-time execution with hardware divide and single-cycle MAC. |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface and 4 KB erase sectors-supports in-application programming and secure firmware updates. |
| SRAM | 32 KB general-purpose SRAM plus 2 KB hibernation-mode battery-backed RAM-retains critical state during deep-sleep without external backup power. |
| Hibernate Current | 1.4 µA typical with RTC running and 2 KB RAM retained-enables multi-year battery life in remote monitoring nodes. |
| Peripherals | 4× UART, 2× SSI, 1× I²C, 6× PWM outputs, 1× QEI, 2× analog comparators, 1× hibernation module-covers full motor drive I/O stack without external glue logic. |
| Package | LQFP-100, 14 mm × 14 mm, 0.5 mm pitch-compatible with standard surface-mount assembly and industrial PCB thermal management. |
| Operating Temp | –40°C to +105°C-qualified for extended temperature industrial environments including factory floor and outdoor enclosures. |
Pinout & Package
LQFP-100 package with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3. Pinout validated per TI SPMS012I datasheet Rev I, pages 167–170 (GPIO port mappings), 233–234 (hibernation signals), and 389–390 (UART/SSI/I²C assignments).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated digital (VDD), analog (VDDA), and core (VDDC) rails-enable noise isolation between ADC, CPU, and I/O domains. |
| GND, GNDA, GNDC | Ground returns | Separate analog ground (GNDA) and core ground (GNDC) minimize coupling noise into sensitive analog peripherals. |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO pins | Multi-function ports supporting UART, SSI, I²C, PWM, QEI, and comparator inputs-configured via register-based alternate function select (AFSEL). |
| HIBRST, HIBRTC, HIBACK | Hibernation control | Direct interface to hibernation module: reset assertion, RTC clock input, and acknowledge signal-enables autonomous wake-up without CPU intervention. |
| U0RX/U0TX, U1RX/U1TX, etc. | UART I/O | Four independent UART channels with FIFO, IrDA encoding, and modem control-support simultaneous serial diagnostics, host communication, and sensor telemetry. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Integrated RTC with calendar mode, battery-backed 2 KB RAM, and sub-µA wake-up-eliminates need for external RTC IC and backup supercapacitor. |
| Motor Control Peripherals | Six PWM generators with configurable dead-band, fault shutdown, and QEI input-supports three-phase BLDC commutation and position feedback in single-chip motor drives. |
| Analog Integration | Two rail-to-rail analog comparators with programmable reference and interrupt output-enables overvoltage/undervoltage protection and zero-crossing detection without external op-amps. |
| Communication Flexibility | 4× UART (IrDA/SIR), 2× SSI (SPI/Microwire), 1× I²C (master/slave)-allows concurrent connection to displays, sensors, EEPROMs, and host controllers using shared GPIO resources. |
| Debug & Trace | JTAG and SWD interfaces with TPIU trace output-enables real-time instruction tracing and non-intrusive debugging in safety-critical embedded applications. |
Applications
| Industrial Motor Drive | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of 3-phase brushless DC motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, generating PWM gate signals, reading QEI position data, and managing thermal fault shutdown. Use Value: On-chip PWM dead-band generation and QEI interface reduce BOM count by eliminating external timing ICs and discrete logic, while hibernation extends standby battery life beyond 5 years. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality with periodic wireless upload. IC Role / Device Role / Timing Role: System-on-chip managing sensor acquisition, data logging, RTC-triggered wake-up, and UART-based BLE bridge communication. Use Value: 1.4 µA hibernate current with RTC and 2 KB RAM retention enables >10-year operation on CR2032 coin cell-no external RTC or backup capacitor required. |
| Programmable Logic Controller (PLC) | Energy Meter Interface |
Use Scenario: DIN-rail mounted PLC I/O module handling discrete inputs, relay outputs, and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time I/O processor with deterministic interrupt latency, UART-based Modbus slave, and GPIO-controlled opto-isolated inputs/outputs. Use Value: NVIC with 8-bit priority grouping ensures <1 µs worst-case interrupt response-critical for hard real-time scan cycles in industrial automation. | Use Scenario: Tamper-resistant electricity meter with pulse counting, voltage sag detection, and secure firmware update capability. IC Role / Device Role / Timing Role: Metering co-processor performing analog comparator-based voltage monitoring, flash-secured firmware validation, and IR/UART utility interface. Use Value: Dual analog comparators with internal reference enable precise undervoltage lockout and brown-out detection-meeting IEC 62053-21 Class 0.5 accuracy requirements. |
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, 256 KB flash, but higher 80 MHz max frequency and added FPU; LQFP-64 package vs. LQFP-100. | Requires PCB redesign due to different pin count and layout; supports floating-point math for advanced filtering but lacks hibernation module's 2 KB battery RAM. | Select when migrating legacy LM3S designs to enhanced performance and FPU capability-requires firmware adaptation and board revision. |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, 64 KB SRAM; no integrated hibernation module or battery-backed RAM; different peripheral set (USB, CAN, no QEI). | Supports USB device and CAN bus-suitable for PC-connected or automotive-adjacent applications-but cannot replicate sub-µA hibernate with RTC retention. | Choose for cost-sensitive industrial control where USB/CAN connectivity outweighs ultra-low-power hibernation needs; verify GPIO/peripheral mapping compatibility. |
Compared with LM3S1150-EQC50-A2T, TM4C123GH6PM offers higher clock speed and FPU but requires board redesign and loses hibernation RAM; STM32F103VET6 adds USB/CAN but lacks hibernation and QEI-making LM3S1150-EQC50-A2T uniquely suited for long-life battery-powered motor control and sensor edge nodes.
Availability
LM3S1150-EQC50-A2T is available at Aetrix Electronics and suitable for industrial motor drives, smart sensor nodes, programmable logic controllers, and energy meter interfaces requiring stable component supply and long-term lifecycle support.
Supply support for LM3S1150-EQC50-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 leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial, automotive, and consumer electronics.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time industrial control applications-emphasizing low-power hibernation, motor control peripherals, and robust on-chip integration to reduce system-level BOM and design complexity.
FAQ
What is the maximum operating frequency of the LM3S1150-EQC50-A2T?
The LM3S1150-EQC50-A2T operates at a maximum system clock frequency of 50 MHz, derived from its internal PLL or external crystal oscillator. This frequency is fully supported across all operating temperature ranges (–40°C to +105°C) and supply voltages (2.25 V to 2.75 V), enabling deterministic real-time execution for motor control loops and communication stacks without overclocking risk.
Does the LM3S1150-EQC50-A2T include a hardware debug interface?
Yes, the LM3S1150-EQC50-A2T integrates a full JTAG debug interface compliant with IEEE 1149.1, supporting boundary scan, flash programming, and real-time trace via the TPIU. It also supports Serial Wire Debug (SWD) mode for reduced pin count debugging-both interfaces are accessible through standard TI XDS100v3 or CMSIS-DAP compliant debug probes used with LM3S1150-EQC50-A2T development tools.
What peripheral features make the LM3S1150-EQC50-A2T suitable for motor control?
The LM3S1150-EQC50-A2T includes six PWM generator blocks with programmable dead-band insertion, fault shutdown inputs, and synchronization capabilities-plus a dedicated Quadrature Encoder Interface (QEI) with index and phase decoding. These features allow direct implementation of three-phase BLDC commutation and position feedback without external timers or logic, making LM3S1150-EQC50-A2T ideal for compact, single-chip motor drive designs.
How does the hibernation module in the LM3S1150-EQC50-A2T reduce system power consumption?
The hibernation module in the LM3S1150-EQC50-A2T reduces system power by enabling a deep-sleep state drawing just 1.4 µA while retaining RTC functionality and 2 KB of battery-backed RAM. It supports wake-up on external pin assertion, RTC alarm match, or low-battery detection-allowing LM3S1150-EQC50-A2T to replace external RTC + backup power circuits in battery-operated edge devices.
Is the LM3S1150-EQC50-A2T pin-compatible with other Stellaris LM3S devices?
No, the LM3S1150-EQC50-A2T is not pin-compatible with other LM3S family members such as LM3S811 or LM3S3748 due to differences in peripheral mapping, GPIO assignment, and package size (LQFP-100 vs. LQFP-48/LQFP-64). Pinout validation confirms unique signal routing for hibernation control (HIBRST, HIBRTC), QEI inputs (PH0–PH3), and dual SSI interfaces-requiring dedicated layout for LM3S1150-EQC50-A2T.
LM3S1150-EQC50-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:
- 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:
- 52
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1150-EQC50-A2T FAQ
1.How can I place an order for LM3S1150-EQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1150-EQC50-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 LM3S1150-EQC50-A2T reliable?
The price and inventory of LM3S1150-EQC50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S1150-EQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S1150-EQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1150-EQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1150-EQC50-A2T?
LM3S1150-EQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1150-EQC50-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 LM3S1150-EQC50-A2T?
For technical support, including LM3S1150-EQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1150-EQC50-A2T requirements.
6.How does Aetrix verify that LM3S1150-EQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S1150-EQC50-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 LM3S1150-EQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S1150-EQC50-A2T?
All LM3S1150-EQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1150-EQC50-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 LM3S1150-EQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S1150-EQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3S1150-EQC50-A2T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
