My Inquiry
My Account
Texas Instruments LM3S2948-EQC50-A2T
- Part No.:
- LM3S2948-EQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2948-EQC50-A2T.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,589
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM3S2948-EQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0B controller, 12-bit ADC (up to 1 MSPS), and hibernation module supporting RTC and battery-backed memory. It operates at 50 MHz and targets motor control and industrial automation systems requiring real-time deterministic response.
For engineers reviewing the LM3S2948-EQC50-A2T datasheet, LM3S2948-EQC50-A2T pinout, LM3S2948-EQC50-A2T application, or LM3S2948-EQC50-A2T equivalent, key selection criteria include CAN interface support, hibernation power management, analog acquisition performance, and Cortex-M3 interrupt latency in embedded control loops.
Technical Context
The LM3S2948-EQC50-A2T implements the ARMv7-M architecture with nested vectored interrupt controller (NVIC), memory protection unit (MPU), and SysTick timer. It integrates dual CAN 2.0B controllers with message objects and FIFO buffering for automotive and industrial bus communication.
Its analog subsystem includes an 8-channel, 12-bit ADC with hardware averaging and sample sequencers, while the hibernation module provides RTC, battery-backed RAM, and wake-on-external-interrupt capability-enabling ultra-low-power operation down to 1.8 µA in hibernate mode with RTC active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max - delivers deterministic real-time execution with <12-cycle interrupt latency. |
| Flash Memory | 256 KB - sufficient for complex motor control algorithms with bootloader and firmware update space. |
| SRAM | 64 KB - supports large control loop buffers, CAN message queues, and real-time data logging. |
| ADC | 12-bit, 1 MSPS, 8-channel - enables high-fidelity current/voltage sensing in servo drives and power converters. |
| CAN Interface | Dual CAN 2.0B controllers - allows simultaneous communication on two independent CAN buses for system redundancy or multi-node topology. |
| Hibernate Current | 1.8 µA with RTC running - enables battery-powered remote I/O nodes with years of operational life. |
| Package | 100-pin LQFP (EQC) - standard surface-mount footprint compatible with industrial PCB assembly processes. |
Pinout & Package
LM3S2948-EQC50-A2T is housed in a 100-pin LQFP (Leadless Quad Flat Package) with 0.5 mm pitch, JEDEC MO-220 compliant, and thermal pad exposed on underside for enhanced heat dissipation in motor drive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital, analog, and core rails enable noise isolation for precision ADC operation. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and core ground planes minimize coupling between switching and sensitive analog circuits. |
| CAN0RX / CAN0TX | CAN 0 differential transceiver interface | Direct connection to external CAN transceiver (e.g., SN65HVD230) without level-shifting or buffering. |
| CAN1RX / CAN1TX | CAN 1 differential transceiver interface | Independent second CAN channel supports dual-bus architectures like J1939 + diagnostics or redundant fieldbus. |
| SSI0CLK / SSI0FSS / SSI0RX / SSI0TX | Synchronous Serial Interface 0 | Full-duplex SPI-compatible interface for connecting encoders, digital potentiometers, or sensor arrays. |
| UART0RX / UART0TX | Asynchronous serial interface | Configurable for RS-232/RS-485 via external level shifter; supports bootloader and debug console. |
| ADC0_IN0–ADC0_IN7 | Analog input channels | Single-ended or differential inputs with programmable gain stage; routed through dedicated analog routing matrix. |
| HIB_RTCCLK | Hibernation module clock input | Accepts external 32.768 kHz crystal for precise RTC timing during low-power hibernate mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN 2.0B controllers | Each with 32 message objects and configurable FIFO - eliminates need for external CAN protocol processors in distributed control systems. |
| Hibernation module with RTC | Retains timekeeping and 2 KB battery-backed SRAM at 1.8 µA - enables time-stamped event logging in energy-constrained edge devices. |
| Hardware-accelerated ADC averaging | Up to 64-sample hardware averaging per conversion - reduces software overhead and improves SNR for noisy industrial environments. |
| Nested Vectored Interrupt Controller (NVIC) | 8-level priority, 43 interrupt sources - ensures sub-microsecond response to critical events like overcurrent fault or encoder index pulse. |
| Memory Protection Unit (MPU) | 8 regions with configurable access permissions - enforces separation between application code, bootloader, and peripheral drivers in safety-critical firmware. |
Applications
| Industrial Motor Control | Automotive Body Control Module |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithm, PWM generation, current sensing, and CAN-based command interface. Use Value: Integrated dual CAN and 12-bit ADC eliminate external interface ICs; hibernation mode enables standby operation with wake-on-CAN for reduced system power. | Use Scenario: Centralized control of door locks, lighting, window lifts, and seat position memory in passenger vehicles. IC Role / Device Role / Timing Role: CAN network node managing local actuator control, status reporting, and diagnostic messaging per UDS standards. Use Value: Dual CAN interfaces allow simultaneous connection to powertrain and body networks; RTC supports timed lock/unlock and battery drain monitoring. |
| Smart Energy Metering Gateway | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Data concentrator aggregating AMI meter readings via RS-485 Modbus and forwarding to utility head-end via CAN or Ethernet bridge. IC Role / Device Role / Timing Role: Protocol translation engine with time-synchronized data capture, secure firmware updates, and tamper detection. Use Value: Hibernation mode with battery-backed RTC maintains accurate time stamping during mains outage; 256 KB flash accommodates dual-bank firmware for safe OTA updates. | Use Scenario: Remote digital I/O expansion module for DIN-rail mounted PLCs, supporting discrete input/output, analog input, and fieldbus connectivity. IC Role / Device Role / Timing Role: Fieldbus slave node with deterministic cyclic I/O exchange, local logic processing, and diagnostics. Use Value: Dual CAN supports both main backplane bus and auxiliary diagnostics bus; GPIOs with interrupt capability enable fast edge-triggered input capture for emergency stop signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Successor part with same pinout, 80 MHz Cortex-M4F core, FPU, and enhanced CAN filtering; requires updated toolchain and firmware porting. | Supports floating-point math for advanced motor control; adds USB OTG and enhanced PWM timers not present in LM3S2948. | Select when migrating legacy designs to extended lifecycle support and higher computational throughput. |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, single CAN 2.0B, no hibernation module; different pinout and peripheral register map. | Lacks battery-backed RTC and ultra-low-power hibernate mode; offers larger flash and higher clock speed but less integrated power management. | Select for cost-sensitive applications where hibernation is unnecessary and CAN+USB+Ethernet coexistence is required via external PHYs. |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S2948-EQC50-A2T provides unique dual-CAN + hibernation integration in a mature, production-qualified package-ideal for long-lifecycle industrial deployments where design stability and low-power autonomy are prioritized over raw compute or peripheral expansion.
Availability
LM3S2948-EQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart energy gateways, and programmable logic controller I/O modules requiring stable component supply across extended product lifecycles.
Supply support for LM3S2948-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 decades of experience in industrial, automotive, and communications markets.
The Stellaris LM3S series was designed specifically for deterministic real-time control applications requiring integrated analog, motor control peripherals, and robust communication interfaces-including CAN-targeting factory automation, motor drives, and building systems.
FAQ
What is the maximum operating frequency of the LM3S2948-EQC50-A2T?
The LM3S2948-EQC50-A2T operates at a maximum CPU frequency of 50 MHz, derived from its internal PLL locked to the main oscillator or external crystal. This frequency is fully supported across the full industrial temperature range (–40°C to +105°C) and enables deterministic execution of real-time control tasks such as field-oriented motor control and high-speed ADC sampling.
Does the LM3S2948-EQC50-A2T support CAN FD or only classical CAN?
The LM3S2948-EQC50-A2T supports only Classical CAN 2.0B (ISO 11898-1), not CAN FD. Its dual CAN controllers implement message objects, acceptance filtering, and FIFO buffering per the CAN 2.0B specification, with bit rates up to 1 Mbps. CAN FD functionality requires newer TI families such as the TM4C129x or C2000 Delfino series.
What is the purpose of the hibernation module in the LM3S2948-EQC50-A2T?
The hibernation module in the LM3S2948-EQC50-A2T enables ultra-low-power operation by retaining RTC timekeeping, 2 KB of battery-backed SRAM, and wake-up capability via external interrupts or RTC alarms while consuming only 1.8 µA. It is used in applications like battery-powered remote sensors or energy meters that must maintain time accuracy and state during extended mains outages.
How many analog input channels does the LM3S2948-EQC50-A2T ADC support?
The LM3S2948-EQC50-A2T features a single 12-bit ADC with eight analog input channels (ADC0_IN0 through ADC0_IN7), configurable for single-ended or differential sampling. These channels are routed through a flexible analog multiplexer and support hardware averaging, sequenced sampling, and trigger synchronization with timers or PWM events.
Is the LM3S2948-EQC50-A2T pin-compatible with other Stellaris LM3S devices?
The LM3S2948-EQC50-A2T uses a 100-pin LQFP package shared with several other LM3S devices (e.g., LM3S8962, LM3S9B92), but pin compatibility is not guaranteed across all variants due to differences in peripheral mapping and signal assignment. Engineers must verify pinout alignment using the specific device's datasheet and schematic review before board reuse.
LM3S2948-EQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 52
- 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:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2948-EQC50-A2T FAQ
1.How can I place an order for LM3S2948-EQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2948-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 LM3S2948-EQC50-A2T reliable?
The price and inventory of LM3S2948-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 LM3S2948-EQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2948-EQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2948-EQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2948-EQC50-A2T?
LM3S2948-EQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2948-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 LM3S2948-EQC50-A2T?
For technical support, including LM3S2948-EQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2948-EQC50-A2T requirements.
6.How does Aetrix verify that LM3S2948-EQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2948-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 LM3S2948-EQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2948-EQC50-A2T?
All LM3S2948-EQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2948-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 LM3S2948-EQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S2948-EQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3S2948-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…
