Manufacturer Part Number

MSP430F2131IDWR

Description

Low-power 16-bit microcontroller from Texas Instruments, part of the MSP430F2xx family. It integrates 8KB flash program memory and 256 bytes RAM in a 20-pin SOIC surface-mount package. It operates up to 16MHz, supports slope ADC, and provides hardware features like Brown-out Reset, Power-On Reset (POR), Pulse Width Modulation (PWM), and Watchdog Timer (WDT). Works for general-purpose embedded control, low power data acquisition, and sensor interface applications.

Specifications

16-bit MSP430 CPU core, running at up to 16MHz. 8KB flash program memory, 256 bytes RAM. Operates with a voltage supply from 1.8V to 3.6V. Provides 16 general-purpose I/O pins. Internal oscillator. Temperature range from -40°C to +85°C. Surface-mount, 20-SOIC package (7.5mm width). RoHS 3 compliant, REACH unaffected. Moisture Sensitivity Level 1 (unlimited). ECCN: EAR99; HTS code: 8542.31.0001. No on-chip EEPROM.

Device Structure

Single-core 16-bit MSP430 CPU. Memory architecture includes 8KB flash and 256B SRAM. On-chip peripherals for system management (Brown-out Detect/Reset, POR), timing/control (PWM, WDT), and data conversion (slope ADC). Internal oscillator circuit. All I/O pins digitally configurable, some multiplexed depending on function. Packaged in a 20-pin surface-mount SOIC.

Performance Characteristics

Typical operating speed is 16MHz at up to 3.6V. Very low active and standby power consumption, suitable for battery-operated systems. Fast wake-up from low-power modes. Stable operation across full industrial temperature range. Reliable in high-volume, long-life applications.

Application Environments

Ideal for low-power embedded applications such as industrial control panels, data loggers, sensor interfaces, portable instruments, and home automation devices. Suits battery-powered products requiring high performance with minimal energy use. Useful in applications prioritizing long-term reliability and regulatory compliance (RoHS, REACH).

Selection Guidelines

Choose this microcontroller for moderate code storage needs (8KB), small to medium embedded systems, and where low power is crucial. Match the number of I/O pins (16) to your system’s requirements. Assess voltage compatibility (1.8V to 3.6V) with your hardware platform. Consider package type for space or mounting constraints—this model fits designs supporting surface-mount SOICs.

Usage Considerations

Follow ESD and moisture guidelines during assembly (MSL 1, unlimited floor life). Observe supply voltage limits to prevent device damage or malfunction. Review TI’s design guides for crystal/oscillator selection if using external clock sources. Flash programming endurance is limited; plan firmware update cycles accordingly. Pay attention to pin multiplexing when configuring peripherals and I/O. Use suitable PCB layout for analog and digital domains to minimize noise.

Potential Equivalent/Replacement Models

Various alternatives exist within the MSP430F2xx series, such as MSP430F2132 (larger memory), MSP430F2131IPWR (same silicon, different package), or MSP430F2013 (lower memory/feature set). Check for pin compatibility and memory requirements before substitution. Other 16-bit MCU families from TI (like MSP430G2xx) may provide similar features in different packages or cost profiles. Alternative vendors offer functional equivalents (Microchip PIC16, Atmel AVR), but code and board changes are likely required. For exact drop-in alternatives or further recommendations, contact the Ariat-Tech sales team with your detailed requirements.

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