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Texas Instruments LM3S1601-IBZ50-A2T
- Part No.:
- LM3S1601-IBZ50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S1601-IBZ50-A2T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S1601-IBZ50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated hibernation module, 4 UARTs, 2 SSI, 2 I²C, and 8-channel 10-bit ADC. It operates at 50 MHz and supports industrial temperature range (–40°C to +85°C) in 100-pin LQFP package. Used in motor control, industrial automation, and embedded HMI systems.
For engineers reviewing the LM3S1601-IBZ50-A2T datasheet, LM3S1601-IBZ50-A2T pinout, LM3S1601-IBZ50-A2T application, or LM3S1601-IBZ50-A2T equivalent, key selection criteria include hibernation-capable real-time clock support, integrated analog comparators, GPIO alternate function mapping for peripheral sharing, and Cortex-M3 debug interface compatibility with JTAG/SWD.
Technical Context
The LM3S1601-IBZ50-A2T implements ARM Cortex-M3 core with Thumb-2 instruction set, NVIC supporting up to 48 interrupts, and SysTick timer. It integrates a hibernation module with battery-backed RTC, 2KB hibernation memory, and wake-on-RTC-match capability.
Peripherals include four UARTs with IrDA/SIR support, two SSI controllers compatible with SPI/Microwire, two I²C masters/slaves with 400 kHz fast-mode support, and eight 10-bit ADC channels with programmable sample sequencers and hardware trigger inputs.
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/program via SWD/JTAG |
| SRAM | 32 KB on-chip SRAM, zero-wait-state access at full CPU speed |
| Hibernation Module | Includes RTC, 2 KB battery-backed RAM, and wake-on-RTC-match or external pin |
| ADC | 8-channel 10-bit SAR ADC with 1 MSPS sample rate and hardware-triggered sequencing |
| Operating Temp | –40°C to +85°C ambient, qualified for industrial applications per TI specification |
| Package | 100-pin LQFP (14 mm × 14 mm), 0.5 mm pitch, RoHS-compliant |
Pinout & Package
LM3S1601-IBZ50-A2T is housed in a 100-pin LQFP package (package code "BZ") with exposed thermal pad. Pin assignments follow TI's standard Stellaris LM3S16xx pinout layout, supporting multiplexed peripheral functions across GPIO banks A–G.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core Power Supply | 3.3 V nominal supply for digital logic and peripherals; requires local 0.1 µF decoupling |
| GND | Ground Reference | Digital ground plane connection; multiple pins provided for low-impedance return path |
| PD0/U0RX | UART0 Receive | Primary serial input for UART0; also configurable as GPIO or T0CCP0 (timer capture) |
| PD1/U0TX | UART0 Transmit | Primary serial output for UART0; also configurable as GPIO or T0CCP1 (timer capture) |
| PC6/I2C1SCL | I²C1 Clock Line | Open-drain clock output for I²C1 bus; internal pull-up not enabled by default |
| PC7/I2C1SDA | I²C1 Data Line | Open-drain bidirectional data line for I²C1; requires external 4.7 kΩ pull-up |
| PH0/SSI0CLK | SSI0 Clock Output | Master clock output for SSI0; supports programmable polarity and phase per SPI mode |
| PH1/SSI0FSS | SSI0 Frame Select | Active-low chip select for SSI0; can be driven by hardware or software control |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Mode with RTC | Reduces system power to ~1.5 µA while maintaining timekeeping and wake capability via RTC match or external interrupt |
| Integrated Analog Comparators | Two rail-to-rail comparators with selectable internal reference (1.65 V or 2.5 V) and interrupt generation on edge or level |
| Peripheral Multiplexing | Each GPIO pin supports up to 8 alternate functions; controlled via GPIOPCTL register without remapping hardware |
| JTAG/SWD Debug Interface | Full SWD and JTAG support with boundary scan, real-time trace via TPIU, and non-intrusive debugging during operation |
| GPIO Commit Control | Prevents accidental reconfiguration of critical pins (e.g., reset, boot pins) after initialization via dedicated commit register |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with position feedback, current sensing, and field-oriented control. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, managing PWM generation via GPIO-timed outputs, and sampling ADC channels at 100 ksps. Use Value: Integrated 10-bit ADC with hardware-triggered sequencing enables synchronized current/voltage sampling; hibernation mode allows ultra-low-power standby between operational cycles. | Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and CO₂ with periodic wireless upload. IC Role / Device Role / Timing Role: System orchestrator managing sensor interfaces (I²C, analog), RTC-based wakeup scheduling, and UART-based data transmission. Use Value: Hibernation module draws only 1.5 µA while preserving RTC and 2 KB RAM; dual I²C interfaces allow concurrent sensor communication without bus arbitration overhead. |
| Human-Machine Interface (HMI) | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Touch-enabled panel with LED indicators, button inputs, and serial communication to host controller. IC Role / Device Role / Timing Role: Real-time UI processor handling touch debounce, LED PWM dimming, and UART/SSI communication to display or host MCU. Use Value: Eight GPIO banks with configurable slew rate and drive strength simplify direct LED/button interfacing; 4 UARTs enable simultaneous debug, host, and peripheral links. | Use Scenario: DIN-rail mounted I/O expansion module with digital input filtering, relay control, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol engine and I/O manager implementing Modbus RTU framing, CRC calculation, and isolated digital input sampling. Use Value: Hardware CRC generator accelerates Modbus frame validation; GPIO interrupt debouncing and configurable input filters reduce firmware overhead for noisy industrial inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S1968-IBZ50-A2T | Same core and package, but adds Ethernet MAC, USB device, and 12-bit ADC (vs. 10-bit) | Required for networked devices or higher-resolution analog acquisition | Select when Ethernet or enhanced ADC resolution is mandatory; otherwise LM3S1601-IBZ50-A2T offers lower cost and smaller footprint |
| Tiva C TM4C123GH6PM | Newer generation with 80 MHz Cortex-M4F, FPU, 256 KB flash, 32 KB SRAM, same pinout family but not pin-compatible | Needed for floating-point math, DSP, or extended peripheral sets (e.g., CAN, USB OTG) | Choose TM4C123GH6PM for new designs requiring performance headroom or advanced peripherals; LM3S1601-IBZ50-A2T remains valid for legacy or cost-sensitive industrial use |
Compared with LM3S1968-IBZ50-A2T and TM4C123GH6PM, the LM3S1601-IBZ50-A2T delivers optimal balance of hibernation efficiency, industrial I/O integration, and deterministic real-time response-without over-provisioning Ethernet or FPU resources that increase BOM cost and power draw.
Availability
LM3S1601-IBZ50-A2T is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and human-machine interface applications requiring stable component supply and long-term lifecycle support.
Supply support for LM3S1601-IBZ50-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as TI's first ARM-based microcontroller family targeting cost-sensitive, real-time industrial applications with integrated analog peripherals and ultra-low-power hibernation capability.
FAQ
What is the maximum operating frequency of the LM3S1601-IBZ50-A2T?
The LM3S1601-IBZ50-A2T 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 all on-chip peripherals-including ADC, UARTs, and timers-are fully functional at this speed without wait states. The LM3S1601-IBZ50-A2T maintains timing compliance across its specified industrial temperature range (–40°C to +85°C).
Does the LM3S1601-IBZ50-A2T support in-circuit debugging?
Yes, the LM3S1601-IBZ50-A2T supports full in-circuit debugging via both JTAG and Serial Wire Debug (SWD) interfaces. It includes an integrated debug access port, NVIC-based exception handling, and Trace Port Interface Unit (TPIU) for real-time instruction trace. Development tools such as TI's Code Composer Studio and third-party IDEs fully support the LM3S1601-IBZ50-A2T through standard CMSIS-DAP or XDS100v3 debug probes.
What power modes does the LM3S1601-IBZ50-A2T support?
The LM3S1601-IBZ50-A2T supports Sleep, Deep-Sleep, and Hibernation modes. In Hibernation mode, it consumes approximately 1.5 µA while retaining RTC operation and 2 KB of battery-backed RAM. Wake-up sources include RTC match events, external GPIO interrupts, and hibernate enable pin assertion. The LM3S1601-IBZ50-A2T exits Hibernation in under 100 µs to resume full operation.
How many UART interfaces does the LM3S1601-IBZ50-A2T include?
The LM3S1601-IBZ50-A2T integrates four independent UART modules (UART0–UART3), each supporting full-duplex asynchronous communication, programmable baud rates, FIFO buffering (16-byte depth), and IrDA/SIR infrared encoding. All UARTs are accessible via GPIO multiplexing and support hardware flow control signals (RTS/CTS) when configured on appropriate pins. This enables concurrent serial communication with multiple peripherals in the LM3S1601-IBZ50-A2T-based system.
Is the LM3S1601-IBZ50-A2T pin-compatible with other Stellaris LM3S devices?
The LM3S1601-IBZ50-A2T shares the same 100-pin LQFP package footprint and basic pinout structure with other LM3S16xx variants (e.g., LM3S1627, LM3S1637), but is not universally pin-compatible across the entire Stellaris family. Peripheral signal assignments differ between models-for example, I²C and SSI locations vary-and GPIO alternate function mappings must be verified per device datasheet. Always consult the LM3S1601-IBZ50-A2T-specific pin tables before board reuse.
LM3S1601-IBZ50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Tape & Reel (TR)
- 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, POR, PWM, WDT
- Number of I/O:
- 60
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1601-IBZ50-A2T FAQ
1.How can I place an order for LM3S1601-IBZ50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1601-IBZ50-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 LM3S1601-IBZ50-A2T reliable?
The price and inventory of LM3S1601-IBZ50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S1601-IBZ50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S1601-IBZ50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1601-IBZ50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1601-IBZ50-A2T?
LM3S1601-IBZ50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1601-IBZ50-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 LM3S1601-IBZ50-A2T?
For technical support, including LM3S1601-IBZ50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1601-IBZ50-A2T requirements.
6.How does Aetrix verify that LM3S1601-IBZ50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S1601-IBZ50-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 LM3S1601-IBZ50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S1601-IBZ50-A2T?
All LM3S1601-IBZ50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1601-IBZ50-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 LM3S1601-IBZ50-A2T part is unused and in its original packaging.
Return procedure for LM3S1601-IBZ50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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