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Texas Instruments LM3S1607-IQR50-A0
- Part No.:
- LM3S1607-IQR50-A0
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
LM3S1607-IQR50-A0.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S1607-IQR50-A0 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated hibernation module, 8-channel μDMA, and dual UARTs. It operates at 50 MHz, supports 3.3 V operation, and integrates ADC (10-bit, 1 MSPS), PWM, and GPIO with interrupt capability - deployed in industrial motor control and embedded sensor nodes.
For engineers reviewing the LM3S1607-IQR50-A0 datasheet, LM3S1607-IQR50-A0 pinout, LM3S1607-IQR50-A0 application, or LM3S1607-IQR50-A0 equivalent, key selection criteria include hibernation-enabled low-power operation, on-chip ROM-based StellarisWare® driver library support, and QFP-100 package compatibility for space-constrained industrial PCBs.
Technical Context
The LM3S1607-IQR50-A0 implements the ARM Cortex-M3 core with Thumb-2 instruction set, NVIC with 48 configurable interrupts, and SysTick timer. It features a dedicated hibernation module with RTC, battery-backed memory, and wake-up from deep-sleep using external pins or RTC match.
Peripherals include two UARTs (one with IrDA SIR), one SSI, two GPTMs (each supporting 16/32-bit modes and PWM), a 12-channel 10-bit ADC with hardware averaging, and GPIO with commit control and edge-detect interrupts - all accessible via APB bus with configurable clock gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs Thumb-2 instructions at up to 50 MHz |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface and erase/write protection |
| SRAM | 32 KB single-cycle static RAM, zero-wait-state access at full speed |
| ADC | 12-channel 10-bit SAR ADC, 1 MSPS sampling rate, hardware averaging up to 64 samples |
| Hibernation Module | Dedicated low-power domain with RTC, battery-backed 256-byte RAM, and wake-on-RTC-match or external pin |
| Package | 100-pin LQFP (14 mm × 14 mm), RoHS-compliant, lead-free finish |
| Operating Voltage | 3.0 V to 3.6 V supply range; internal regulator enables stable core voltage during brownout |
| Temperature Range | –40°C to +105°C industrial grade rating per A0 revision |
Pinout & Package
LM3S1607-IQR50-A0 is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermal pad exposed on underside for enhanced heat dissipation in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate analog (VDDA), digital (VDD), and core (VDDC) rails enable noise isolation for ADC and CPU domains |
| GND, GNDA, GNDC | Ground returns | Dedicated analog ground (GNDA) and core ground (GNDC) reduce coupling between sensitive and switching circuits |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | GPIO ports | Multi-function pins with programmable drive strength, slew rate, pull-up/down, and edge-triggered interrupt capability |
| U0RX/U0TX, U1RX/U1TX | UART I/O | Dual asynchronous serial interfaces; U0 supports IrDA SIR encoding, both support FIFO and DMA |
| SSI0CLK/SS0FSS/SSI0RX/SSI0TX | Synchronous serial interface | Full-duplex SPI-compatible port with programmable bit rate, frame format, and DMA support |
| ADC0CH0–ADC0CH11 | Analog input channels | 12 dedicated ADC input pins mapped to internal 10-bit SAR converter with selectable sample sequencers |
| HIBRST, HIBACK, HIBRTCA | Hibernation control | Direct interface to hibernation module: reset assertion, acknowledge handshake, and RTC alarm output |
| JTAG TCK/TMS/TDI/TDO/nTRST | Debug interface | Standard 5-pin JTAG port supporting boundary scan, flash programming, and real-time debug via SWD-compatible TPIU |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Mode Power Consumption | 1.7 µA typical with RTC running and 256-byte RAM retained - enables multi-year battery life in remote sensors |
| On-Chip ROM Firmware | StellarisWare® peripheral driver library preloaded in ROM, reducing flash usage and boot time |
| μDMA Controller | 8-channel micro-DMA with scatter-gather support, enabling zero-CPU-overhead peripheral-to-memory transfers |
| ADC Hardware Averaging | Configurable 2–64 sample averaging per conversion sequence, improving effective resolution without software overhead |
| GPIO Commit Control | Write-once configuration lock for critical I/O settings, preventing accidental reconfiguration during runtime |
| Integrated Watchdog & NMI | Dedicated watchdog timer with windowed mode and non-maskable interrupt input for fail-safe system recovery |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop BLDC motor control in HVAC blowers with real-time current sensing and commutation timing. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithms, managing PWM generation, ADC sampling, and fault response within 1 µs latency budget. Use Value: Integrated 50 MHz Cortex-M3, dual GPTMs with PWM capture, and 12-channel ADC enable deterministic timing and sensor fusion without external co-processors. | Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and air quality data every 15 minutes. IC Role / Device Role / Timing Role: System-on-chip host managing sensor I²C reads, data preprocessing, hibernation scheduling, and wireless wakeup trigger. Use Value: Hibernation module draws only 1.7 µA while retaining RTC and 256-byte RAM - extends CR2032 battery life beyond 5 years. |
| Programmable Logic Controller (PLC) | Medical Diagnostic Equipment |
Use Scenario: DIN-rail mounted PLC I/O module handling discrete input scanning, relay actuation, and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time I/O processor interfacing with opto-isolated inputs/outputs and managing dual UARTs for fieldbus and debug traffic. Use Value: Dual UARTs (one with IrDA SIR), 48 NVIC interrupts, and GPIO edge-detect capability support deterministic 1 ms I/O scan cycles with minimal jitter. | Use Scenario: Portable ultrasound front-end requiring low-noise analog acquisition, precise timing, and fail-safe power management. IC Role / Device Role / Timing Role: Embedded controller coordinating ADC sampling, beamforming logic, and battery health monitoring under strict safety constraints. Use Value: Separate VDDA/GNDA rails, 10-bit ADC with hardware averaging, and NMI-assisted watchdog ensure signal integrity and safe shutdown on fault detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S1968-IQR50-A0 | Same package and core; adds Ethernet MAC, USB device, and 64 KB SRAM - no hibernation module | Better suited for networked gateways; lacks ultra-low-power hibernation capability | Select LM3S1968-IQR50-A0 only when Ethernet or USB host/device is required and hibernation is unnecessary |
| Tiva C TM4C123GH6PM | Successor family; same Cortex-M4F core, 80 MHz, 256 KB flash, 32 KB SRAM, but no hibernation module - uses newer ROM bootloader | Higher performance and floating-point support; requires PCB redesign due to 64-pin LQFP vs. 100-pin | TM4C123GH6PM offers upgrade path for compute-intensive tasks but cannot replace LM3S1607-IQR50-A0 in hibernation-critical designs |
Compared with LM3S1968-IQR50-A0 and TM4C123GH6PM, the LM3S1607-IQR50-A0 uniquely delivers sub-2 µA hibernation with RTC and battery-backed RAM in a 100-pin LQFP - making it irreplaceable for long-life, intermittent-sensing applications where power budget is constrained below 5 µA average.
Availability
LM3S1607-IQR50-A0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, programmable logic controllers, and medical diagnostic equipment requiring stable component supply across extended product lifecycles.
Supply support for LM3S1607-IQR50-A0 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, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets since 1930.
The Stellaris LM3S series was designed as TI's first ARM-based microcontroller family targeting cost-sensitive, low-power industrial and embedded applications - emphasizing integration, firmware-ready peripherals, and robust qualification for extended temperature operation.
FAQ
What is the maximum operating frequency of the LM3S1607-IQR50-A0?
The LM3S1607-IQR50-A0 operates at a maximum system clock frequency of 50 MHz. This is achieved using the internal PLL with an external crystal or oscillator input, and the core maintains zero-wait-state execution from flash at this speed. The LM3S1607-IQR50-A0 datasheet specifies timing parameters validated up to 50 MHz across the full industrial temperature range (–40°C to +105°C).
Does the LM3S1607-IQR50-A0 support hibernation mode with RTC functionality?
Yes, the LM3S1607-IQR50-A0 includes a dedicated hibernation module that supports RTC operation while drawing only 1.7 µA typical current. It retains 256 bytes of battery-backed RAM and allows wake-up via RTC alarm or external pin assertion. This functionality is fully implemented in silicon and documented in Section 6 of the LM3S1607-IQR50-A0 datasheet.
What development tools are officially supported for the LM3S1607-IQR50-A0?
Texas Instruments officially supports Keil MDK-ARM, IAR Embedded Workbench, and TI's Code Composer Studio v5.x for the LM3S1607-IQR50-A0. All toolchains integrate with the on-chip ROM-based StellarisWare® driver library and support JTAG/SWD debugging via standard TI XDS100v2 or Segger J-Link adapters. The LM3S1607-IQR50-A0 evaluation board (EK-LM3S1607) is also fully compatible.
Is the LM3S1607-IQR50-A0 pin-compatible with other LM3S devices in the same package?
No - the LM3S1607-IQR50-A0 is not pin-compatible with other LM3S devices in the 100-pin LQFP package. While physical footprint matches, peripheral mappings (e.g., ADC channel assignments, UART pin locations, SSI signals) differ significantly across the LM3S family. Pin compatibility must be verified per device using the specific LM3S1607-IQR50-A0 pin diagram in Section 1.3 of its datasheet.
What is the flash endurance and data retention specification for the LM3S1607-IQR50-A0?
The LM3S1607-IQR50-A0 flash memory is rated for a minimum of 100,000 erase/write cycles and guarantees data retention for 20 years at 85°C or indefinitely at lower temperatures. These specifications are defined in the "Flash Memory" section (Section 7.2.3) of the LM3S1607-IQR50-A0 production datasheet and apply to all 256 KB of on-chip flash.
LM3S1607-IQR50-A0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not 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, DMA, POR, PWM, WDT
- Number of I/O:
- 33
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1607-IQR50-A0 FAQ
1.How can I place an order for LM3S1607-IQR50-A0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1607-IQR50-A0 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 LM3S1607-IQR50-A0 reliable?
The price and inventory of LM3S1607-IQR50-A0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S1607-IQR50-A0 is usually 5 days.
3.What payment methods are accepted for LM3S1607-IQR50-A0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1607-IQR50-A0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1607-IQR50-A0?
LM3S1607-IQR50-A0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1607-IQR50-A0 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 LM3S1607-IQR50-A0?
For technical support, including LM3S1607-IQR50-A0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1607-IQR50-A0 requirements.
6.How does Aetrix verify that LM3S1607-IQR50-A0 is sourced from the original manufacturer or authorized distributors?
All LM3S1607-IQR50-A0 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 LM3S1607-IQR50-A0 meets industry standards.
7.What is the process for return or replacement of LM3S1607-IQR50-A0?
All LM3S1607-IQR50-A0 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1607-IQR50-A0, 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 LM3S1607-IQR50-A0 part is unused and in its original packaging.
Return procedure for LM3S1607-IQR50-A0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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