Texas Instruments MSP430FR2100IPW16R

Overview

MSP430FR2100IPW16R from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller in 16-pin TSSOP (PW16) package, featuring 1KB program FRAM, 512-byte RAM, 12 I/Os, and integrated eUSCI_A for UART/SPI/IrDA. It operates from 1.8 V to 3.6 V and delivers 120 µA/MHz active current, targeting battery-powered sensing applications such as smoke detectors and door sensors.

For engineers reviewing the MSP430FR2100IPW16R datasheet, MSP430FR2100IPW16R pinout, MSP430FR2100IPW16R application, or MSP430FR2100IPW16R equivalent, key selection criteria include its LPM3.5 RTC operation at 1 µA, 16-MHz DCO with ±1% accuracy, capacitive touch I/O capability on all pins, and absence of ADC (confirmed per device comparison table).

Technical Context

The MSP430FR2100IPW16R implements a 16-bit RISC CPU with constant generator and 16-bit registers, enabling high code efficiency. Its clock system integrates a 16-MHz digitally controlled oscillator (DCO) with FLL, 32-kHz REFO, 10-kHz VLO, and external LFXT support - all programmable via CS module with MCLK/SMCLK prescalers.

Power management includes six low-power modes (LPM0–LPM4.5), with LPM3.5 sustaining RTC counter and 32-byte backup memory at 1 µA using 32.768-kHz crystal, and LPM4.5 achieving 34 nA shutdown current without SVS. All 12 GPIOs support capacitive touch and can wake from any LPM.

Key Specifications

Pinout & Package

TSSOP-16 (PW16) package, 5.0 mm × 4.4 mm body size, surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430FR2100IPW16R, MSP430FR2110IPW16R adds ADC capability without changing package or power profile, while MSP430FR2000IPW16R reduces memory to cut cost - both retain identical LPM performance, FRAM reliability, and capacitive touch I/O.

Availability

MSP430FR2100IPW16R is available at Aetrix Electronics and suitable for smoke detectors, door/window sensors, lighting controls, and personal care electronics requiring stable component supply and long-term manufacturability.

Supply support for MSP430FR2100IPW16R 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and system integration.

The MSP430FR21xx family targets ultra-low-power sensing applications, combining FRAM memory, intelligent peripherals, and deep-sleep modes to extend battery life in portable and maintenance-free devices.

FAQ

Does MSP430FR2100IPW16R include an analog-to-digital converter (ADC)?

No, the MSP430FR2100IPW16R does not include an ADC. Per the official device comparison table (Table 6-1) and functional block diagram note, ADC channels are omitted from this variant - unlike MSP430FR2110 and MSP430FR2111. However, the enhanced comparator (eCOMP0) with 6-bit DAC reference remains fully functional for analog threshold detection.

What is the maximum operating frequency of MSP430FR2100IPW16R?

The MSP430FR2100IPW16R supports up to 16 MHz system clock via its digitally controlled oscillator (DCO) with frequency-locked loop (FLL). The DCO achieves ±1% accuracy at room temperature using the on-chip 32-kHz reference oscillator (REFO), enabling precise timing without external crystals for many applications.

Can MSP430FR2100IPW16R operate from a single 1.8-V supply?

Yes, MSP430FR2100IPW16R operates across 1.8 V to 3.6 V. However, the minimum functional supply voltage is constrained by SVS (supply-voltage supervisor) thresholds - below ~1.9 V, brown-out reset may activate depending on SVS level configuration. For guaranteed 1.8-V operation, SVS must be disabled or configured appropriately per Section 8.12.1.1.

How many I/O pins support capacitive touch sensing on MSP430FR2100IPW16R?

All 12 general-purpose I/O pins on MSP430FR2100IPW16R support capacitive touch sensing. This capability is inherent to the port architecture and does not require additional hardware - enabling robust, low-cost human-interface designs such as proximity-activated switches in door/window sensors or lighting controls.

Is MSP430FR2100IPW16R pin-compatible with other devices in the FR21xx family?

Yes, MSP430FR2100IPW16R shares identical pinout and package (TSSOP-16) with MSP430FR2110IPW16R and MSP430FR2111IPW16R. This allows direct PCB reuse across variants - upgrading to ADC-enabled versions requires only firmware changes and optional external analog circuitry.