Texas Instruments MSP430G2102IPW14

Overview

MSP430G2102IPW14 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in 14-pin TSSOP packaging, featuring 1 kB Flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and Spy-Bi-Wire debug interface - designed for battery-powered sensor nodes and simple control applications requiring sub-1 µs wake-up and <0.1 µA off-mode current.

For engineers reviewing the MSP430G2102IPW14 datasheet, MSP430G2102IPW14 pinout, MSP430G2102IPW14 application, or MSP430G2102IPW14 equivalent, key selection criteria include its 1.8–3.6 V supply range, 16 MHz DCO clock capability, integrated brownout detection, capacitive-touch I/O support, and compatibility with TI's MSP430x2xx Family User's Guide (SLAU144).

Technical Context

The MSP430G2102IPW14 implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU cycle. Its basic clock module integrates a digitally controlled oscillator (DCO), internal low-frequency oscillator (VLO), and external crystal support (32 kHz), enabling dynamic clock source selection between ACLK, SMCLK, and MCLK.

It supports five software-selectable low-power modes (LPM0–LPM4), with LPM4 drawing only 0.1 µA while retaining RAM. The USI module provides hardware-level SPI and I²C protocol handling without CPU intervention, and the Spy-Bi-Wire interface enables in-system programming and debugging using two pins.

Key Specifications

Pinout & Package

Package: 14-pin TSSOP (PW14), 5.0 mm × 6.4 mm body, 0.65 mm pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.

Compared with MSP430G2202IPW14, the MSP430G2102IPW14 trades Flash capacity for lower cost and smaller die size; compared with MSP430G2112IPW14, it omits the ADC10 module to reduce complexity and power in purely digital control roles.

Availability

MSP430G2102IPW14 is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial remote monitors, and portable medical devices requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.

Supply support for MSP430G2102IPW14 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, reliability, and system integration.

The MSP430G2xx family targets ultra-low-power embedded applications - designed specifically for extended battery life in portable measurement, sensing, and simple control systems where active time is brief and standby dominates.

FAQ

What is the maximum operating frequency of the MSP430G2102IPW14?

The MSP430G2102IPW14 supports a maximum system clock frequency of 16 MHz via its digitally controlled oscillator (DCO), calibrated at factory and stored in information memory segment A. This frequency is achievable across the full 1.8–3.6 V supply range and ambient temperatures from –40°C to 85°C, as verified in the SLAS723H datasheet revision May 2013. The DCO stabilizes in less than 1 µs, enabling rapid transitions from low-power modes.

Does the MSP430G2102IPW14 include an analog-to-digital converter (ADC)?

No, the MSP430G2102IPW14 does not include the ADC10 module. It belongs to the MSP430G2x02 series, which excludes the 10-bit ADC found in the MSP430G2x32 series. Table 1 in the SLAS723H datasheet explicitly lists "–" under the ADC10 Channel column for all G2x02 devices including MSP430G2102IPW14. Analog sensing must be implemented externally or with a variant like MSP430G2112IPW14.

Which debug interface does the MSP430G2102IPW14 support?

The MSP430G2102IPW14 supports the Spy-Bi-Wire (SBW) interface using pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This 2-wire subset of JTAG enables full in-system programming, flash erasure, and real-time debugging without requiring a 4-pin JTAG header. SBW is enabled by default after reset and requires no external pull resistors beyond standard RST line conditioning.

How many I/O pins does the MSP430G2102IPW14 provide?

The MSP430G2102IPW14 provides eight programmable digital I/O pins: P1.0 through P1.7 (Pins 2–9), plus P2.6 and P2.7 (Pins 13–12), totaling ten usable I/O terminals. However, Pins 12 (XOUT/P2.7) and 13 (XIN/P2.6) are dual-function - serving as crystal oscillator inputs when used for LF clocking, or as general-purpose I/O otherwise. All P1.x pins support capacitive-touch oscillator enable.

What low-power modes are available on the MSP430G2102IPW14?

The MSP430G2102IPW14 supports five software-configurable low-power modes: LPM0 through LPM4. LPM4 achieves the lowest power state at 0.1 µA with RAM retention and all clocks disabled. LPM3 maintains ACLK active for real-time clock functions at 0.5 µA. Each mode disables specific clocks (MCLK, SMCLK, ACLK) and subsystems (DCO, crystal oscillator) to optimize energy use based on application timing requirements.