Texas Instruments MSP430FR2111IPW16R

Overview

MSP430FR2111IPW16R from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 3.75KB nonvolatile program memory, 1KB RAM, 8-channel 10-bit ADC, and integrated enhanced comparator with 6-bit DAC reference. 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 portable health devices.

For engineers reviewing the MSP430FR2111IPW16R datasheet, MSP430FR2111IPW16R pinout, MSP430FR2111IPW16R application, or MSP430FR2111IPW16R equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC operation at 1 µA, capacitive touch I/O capability across all 12 pins, and TSSOP-16 package compatibility with Spy-Bi-Wire debug interface.

Technical Context

The MSP430FR2111IPW16R integrates a 16-MHz digitally controlled oscillator (DCO) with FLL for ±1% accuracy at room temperature, paired with low-frequency sources including REFO (32 kHz), VLO (10 kHz), MODOSC, and external LFXT crystal support. Its clock system enables dynamic MCLK/SMCLK prescaling and fast wake-up (<10 µs) from LPM4.5.

It features a unified FRAM memory architecture supporting simultaneous read/write, built-in ECC, configurable write protection, and 32-byte backup memory (BAKMEM) retained in LPM3.5. The eUSCI_A0 module supports UART, IrDA, and SPI with programmable baud rates, while Timer_B3 provides three capture/compare registers-CCR1 and CCR2 externally accessible, CCR0 reserved for internal timing.

Key Specifications

Pinout & Package

TSSOP-16 (PW16) package, 5 mm × 4.4 mm body size, surface-mount, leaded package with 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2110IPW16R, the MSP430FR2111IPW16R provides 1.75 KB additional FRAM for firmware growth and data buffers; versus MSP430FR2311IPW16R, it trades ADC resolution and LIN capability for lower system cost and proven qualification in consumer safety applications.

Availability

MSP430FR2111IPW16R is available at Aetrix Electronics and suitable for smoke detectors, portable health monitors, appliance battery packs, and door/window sensors requiring stable component supply across multi-year production cycles.

Supply support for MSP430FR2111IPW16R 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, integrated analog peripherals, and optimized power modes to extend battery life in portable and safety-critical devices.

FAQ

What is the maximum operating frequency of the MSP430FR2111IPW16R?

The MSP430FR2111IPW16R features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) capable of operating up to 16 MHz. This maximum frequency is achievable across the full 1.8 V to 3.6 V supply range and is specified with ±1% accuracy at room temperature using the on-chip reference. The device supports programmable MCLK prescaling from 1 to 128 for flexible clock domain partitioning.

Does the MSP430FR2111IPW16R support external crystal oscillators?

Yes, the MSP430FR2111IPW16R supports external 32.768-kHz crystals via pins P2.7 (XIN) and P2.6 (XOUT) for precise real-time clock operation in LPM3.5. It also supports external high-frequency crystals through the LFXT oscillator module, though the primary high-speed clock source remains the internal 16-MHz DCO. Crystal layout must follow TI's recommended PCB guidelines to ensure startup reliability and frequency stability.

How many ADC channels does the MSP430FR2111IPW16R have, and what is their resolution?

The MSP430FR2111IPW16R includes an 8-channel, 10-bit successive approximation register (SAR) ADC with single-ended input capability and a maximum sample rate of 200 ksps. All eight analog inputs (A0–A7) are mapped to dedicated GPIO pins in the TSSOP-16 package, and the ADC supports internal references (1.5 V and Veref±) for ratiometric measurements. The ADC is not present on the MSP430FR2000 variant but is fully implemented in the MSP430FR2111IPW16R.

What debug interface does the MSP430FR2111IPW16R use?

The MSP430FR2111IPW16R uses the Spy-Bi-Wire (SBW) interface for programming and debugging, accessed via pins TEST (SBWTCK) and RST/NMI/SBWTDIO (SBWTDIO). This two-wire interface is electrically compatible with JTAG and supported by TI's MSP-FET430U20 programmer and Code Composer Studio IDE. No external debug probe is required for basic firmware loading and breakpoint debugging.

Is the MSP430FR2111IPW16R pin-compatible with other devices in the FR21xx family?

Yes, the MSP430FR2111IPW16R is pin-compatible with MSP430FR2110IPW16R, MSP430FR2100IPW16R, and MSP430FR2000IPW16R in the TSSOP-16 (PW16) package. All share identical pin numbering, signal mapping, and electrical characteristics. Firmware developed for one can be reused across others with only memory-size-aware linker adjustments - enabling scalable design reuse from simple to feature-rich variants.