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Texas Instruments LM3S1607-IQR50-A0T
- Part No.:
- LM3S1607-IQR50-A0T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
LM3S1607-IQR50-A0T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,646
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Product details
Overview
LM3S1607-IQR50-A0T 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 up to 50 MHz, supports 3.3-V operation, and integrates ADC (12-bit, 1 MSPS), PWM, GPIO, and real-time clock functionality for embedded control applications.
For engineers reviewing the LM3S1607-IQR50-A0T datasheet, LM3S1607-IQR50-A0T pinout, LM3S1607-IQR50-A0T application, or LM3S1607-IQR50-A0T equivalent, key selection criteria include hibernation support, on-chip ROM bootloader, NVIC interrupt handling, and compatibility with StellarisWare® software stack in resource-constrained industrial control designs.
Technical Context
The LM3S1607-IQR50-A0T implements the ARM Cortex-M3 core with Thumb-2 instruction set, nested vectored interrupt controller (NVIC), and memory protection unit (MPU). It includes a dedicated hibernation module with battery-backed RTC and SRAM, enabling ultra-low-power wake-up from deep sleep states.
Peripherals include two UARTs supporting IrDA/SIR, one SSI interface, eight 16/32-bit general-purpose timers (including RTC mode), and a 12-bit ADC with four sample sequencers and hardware averaging. All peripherals are accessible via APB bus with configurable clock gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, no MMU - enables deterministic real-time execution with low-latency interrupt response. |
| Max Clock Speed | 50 MHz - defines maximum instruction throughput and peripheral timing margins for time-critical control loops. |
| Flash Memory | 256 KB - sufficient for firmware + bootloader + field-upgradable application code without external storage. |
| SRAM | 32 KB - supports real-time data buffering, stack/heap allocation, and hibernation-mode retention of critical variables. |
| ADC Resolution & Rate | 12-bit, 1 MSPS - enables precise analog sensing (e.g., motor current, temperature) with sub-microsecond sampling intervals. |
| Hibernation Module | Integrated with RTC, battery-backed RAM, and wake-on-external-pin - reduces system standby power to ~1.4 µA while preserving state. |
| UART Interfaces | 2 × UART with IrDA/SIR support - provides robust serial communication for diagnostics, host interface, and legacy protocol bridging. |
Pinout & Package
LM3S1607-IQR50-A0T is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow TI's standard Stellaris LM3S16xx pinout layout, including dedicated JTAG/SWD debug pins, GPIO groups with alternate functions, and power/ground distribution optimized for EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Supply Inputs | Separate digital, analog, and core power domains - enable noise isolation between ADC and logic sections. |
| GND, GNDA, GNDC | Ground Returns | Dedicated analog/digital/core ground planes - reduce coupling and improve ADC SNR and system stability. |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO Ports | Configurable 5V-tolerant I/O with slew-rate control - support direct interfacing to sensors, actuators, and legacy logic without level shifters. |
| PA0–PA7, PB0–PB7 | Alternate Function Pins | Shared with UART0/1, SSI0, timer outputs, and ADC inputs - allow flexible peripheral mapping without external muxing. |
| TCK, TMS, TDI, TDO, nTRST | JTAG Debug Interface | Standard 5-pin boundary-scan interface - enables full-core debugging, flash programming, and production test access. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module with RTC | Enables <1.5 µA deep-sleep current with timekeeping and wake-on-event - extends battery life in portable and remote monitoring systems. |
| On-Chip ROM Bootloader | Supports UART-based firmware updates without external programmer - simplifies field maintenance and eliminates need for dedicated ISP hardware. |
| μDMA Controller (8 Channels) | Offloads CPU from data movement tasks (e.g., ADC-to-memory, UART-to-buffer) - frees >30% CPU bandwidth for application logic. |
| NVIC with 64 Interrupt Lines | Hardware-prioritized, low-latency interrupt handling (<12 cycles) - ensures deterministic response to time-critical events like motor commutation or fault detection. |
| Integrated Analog Peripherals | 12-bit ADC + internal temp sensor + voltage reference - eliminates external signal-conditioning components for basic environmental and system monitoring. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop BLDC motor control in HVAC blowers with overtemperature and overcurrent protection. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation, ADC sampling of phase currents, and fault-triggered shutdown. Use Value: Integrated hibernation allows fan idle mode with <2 µA quiescent current; 50-MHz core delivers 100-µs loop update rate. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality with periodic wireless upload. IC Role / Device Role / Timing Role: Sensor interface hub, data preprocessing engine, and low-power scheduler managing wake/sleep cycles and UART transmission bursts. Use Value: On-chip RTC and hibernation module enable accurate 10-minute wake intervals; 32 KB SRAM buffers 24 hours of sensor logs. |
| Programmable Logic Controller (PLC) I/O Module | Medical Diagnostic Equipment |
Use Scenario: DIN-rail mounted I/O expansion module with digital input filtering, relay drive, and Modbus RTU communication. IC Role / Device Role / Timing Role: Deterministic I/O scanning engine, UART protocol handler, and watchdog-managed safety supervision. Use Value: NVIC interrupt latency <12 cycles ensures sub-1-ms input response; dual UARTs support simultaneous Modbus and debug ports. | Use Scenario: Portable ultrasound front-end requiring synchronized analog acquisition, real-time gain control, and USB host interface. IC Role / Device Role / Timing Role: ADC timing controller, digital signal preprocessor, and USB bridge controller coordinating data flow to host PC. Use Value: 12-bit ADC with hardware averaging improves SNR for weak echo signals; 256 KB flash stores multiple calibration profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S1968-IQR50-A0T | Same core, 256 KB flash, but adds Ethernet MAC and CAN controller - larger die, higher power, no hibernation module. | Targeted at networked industrial gateways; lacks battery-backed RTC and ultra-low-power hibernate capability. | Select when wired connectivity (10/100 Mbps Ethernet) is required and deep-sleep current is not critical. |
| TM4C123GH6PM | Successor family with same pinout, 80 MHz, 256 KB flash, 32 KB SRAM, enhanced hibernation (0.9 µA), and added USB OTG. | Backward-compatible replacement with extended lifecycle support; TI discontinued LM3S production in 2018. | Preferred for new designs requiring long-term supply and improved low-power performance; requires minor firmware adaptation. |
Compared with LM3S1607-IQR50-A0T, LM3S1968-IQR50-A0T trades hibernation capability for networking features, while TM4C123GH6PM offers higher performance, lower hibernate current, and active manufacturing support - making it the recommended upgrade path for production continuity.
Availability
LM3S1607-IQR50-A0T is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and portable medical diagnostic equipment requiring stable component supply and long-lifecycle support.
Supply support for LM3S1607-IQR50-A0T 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 wireless technologies since 1930.
The Stellaris LM3S series was designed as TI's first ARM Cortex-M3-based microcontroller family targeting cost-sensitive, low-power industrial and automation applications with integrated analog and control peripherals.
FAQ
What is the operating voltage range for the LM3S1607-IQR50-A0T?
The LM3S1607-IQR50-A0T operates from 3.0 V to 3.6 V for all supply domains (VDD, VDDA, VDDC). This narrow range ensures stable analog performance and consistent core timing across temperature; operation outside this window may cause ADC inaccuracies or flash corruption. The LM3S1607-IQR50-A0T does not support 5-V tolerant I/O without external level-shifting circuitry.
Does the LM3S1607-IQR50-A0T support in-system programming via UART?
Yes, the LM3S1607-IQR50-A0T includes a factory-programmed ROM bootloader that supports UART-based firmware updates without external debug hardware. Using the TI-defined protocol over UART0 or UART1, users can reprogram flash memory directly in the target system. This capability is fully implemented in the LM3S1607-IQR50-A0T and documented in the Stellaris Peripheral Driver Library User's Guide.
What is the hibernation current specification for the LM3S1607-IQR50-A0T?
The LM3S1607-IQR50-A0T achieves 1.4 µA typical hibernation current with RTC running and 2 KB of SRAM retained, measured at 3.3 V and 25°C. This value is specified in the Electrical Characteristics section of the LM3S1607 datasheet (SPMS021H, Section 5.3). The LM3S1607-IQR50-A0T hibernation module supports multiple retention modes, including full-SRAM retention at slightly higher current.
Is the LM3S1607-IQR50-A0T pin-compatible with other LM3S16xx variants?
Yes, the LM3S1607-IQR50-A0T shares identical pinout and package (64-pin LQFP) with all LM3S16xx family members, including LM3S1601, LM3S1608, and LM3S1621. This allows hardware reuse across variants differing only in flash/RAM size or peripheral enablement. The LM3S1607-IQR50-A0T pin mapping is defined in Table 5-1 of the SPMS021H datasheet and verified across TI's official reference designs.
What debug interfaces does the LM3S1607-IQR50-A0T support?
The LM3S1607-IQR50-A0T supports standard 5-pin JTAG (TCK/TMS/TDI/TDO/nTRST) and Serial Wire Debug (SWD) via shared pins. Both interfaces provide full read/write access to core registers, flash, and peripherals during development and production test. The LM3S1607-IQR50-A0T implements ARM CoreSight-compliant debug architecture, compatible with TI's ICDI, Segger J-Link, and OpenOCD tools.
LM3S1607-IQR50-A0T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-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, 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-A0T FAQ
1.How can I place an order for LM3S1607-IQR50-A0T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1607-IQR50-A0T 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-A0T reliable?
The price and inventory of LM3S1607-IQR50-A0T 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-A0T is usually 5 days.
3.What payment methods are accepted for LM3S1607-IQR50-A0T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1607-IQR50-A0T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1607-IQR50-A0T?
LM3S1607-IQR50-A0T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1607-IQR50-A0T 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-A0T?
For technical support, including LM3S1607-IQR50-A0T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1607-IQR50-A0T requirements.
6.How does Aetrix verify that LM3S1607-IQR50-A0T is sourced from the original manufacturer or authorized distributors?
All LM3S1607-IQR50-A0T 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-A0T meets industry standards.
7.What is the process for return or replacement of LM3S1607-IQR50-A0T?
All LM3S1607-IQR50-A0T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1607-IQR50-A0T, 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-A0T part is unused and in its original packaging.
Return procedure for LM3S1607-IQR50-A0T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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