Texas Instruments MSP430G2102IPW20R

Overview

MSP430G2102IPW20R from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in 20-pin TSSOP package, 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. It operates from 1.8 V to 3.6 V and supports capacitive-touch I/O on up to 8 pins - ideal for battery-powered sensor nodes and simple control systems requiring fast wake-up (<1 µs) and five power-saving modes.

For engineers reviewing the MSP430G2102IPW20R datasheet, MSP430G2102IPW20R pinout, MSP430G2102IPW20R application, or MSP430G2102IPW20R equivalent, key selection criteria include its 1 kB Flash size, absence of ADC10 (distinguishing it from G2x32 series), USI-based serial communication capability, and compatibility with TI's MSP430x2xx Family User's Guide (SLAU144) for peripheral configuration and low-power mode implementation.

Technical Context

The MSP430G2102IPW20R implements a 16-bit RISC CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, internal LF oscillator, and external crystal support (32 kHz), delivering MCLK, SMCLK, and ACLK to peripherals including Timer_A and USI.

Power management is centered on six operating modes: Active Mode (220 µA @ 1 MHz, 2.2 V) and five low-power modes (LPM0–LPM4), with standby current as low as 0.5 µA and off-mode (RAM retention) at 0.1 µA. Brownout detection and programmable pullup/pulldown resistors on all I/O pins enable robust operation in noisy or variable-supply environments.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (PW20), 0.65 mm pitch, body size 6.5 mm × 4.4 mm, JEDEC MO-153 compliant. Thermal pad not present; standard surface-mount reflow profile applies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2102IPW20R, the G2202 offers scalable memory headroom while preserving ultra-low-power behavior, whereas the G2112 introduces analog capability at the cost of added layout complexity and marginal current increase - both retain identical TSSOP-20 footprint and Spy-Bi-Wire debug compatibility.

Availability

MSP430G2102IPW20R is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial HMI panels, smart meter tamper detection, and portable medical monitors requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MSP430G2102IPW20R 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 specializing in analog, embedded processing, and connectivity technologies, with decades of investment in ultra-low-power MCU innovation.

The MSP430G2xx series was designed specifically for cost-sensitive, battery-operated applications demanding nanowatt-level power management, rapid wake-up, and integrated mixed-signal peripherals - targeting sensor, metering, and portable equipment markets.

FAQ

Does MSP430G2102IPW20R include an analog-to-digital converter (ADC)?

No, MSP430G2102IPW20R does not include the ADC10 module. This is confirmed by device family documentation (SLAS723H), Table 1, and functional block diagrams - ADC10 is exclusive to MSP430G2x32 variants (e.g., G2132). All ADC-related pin functions (A0–A7, VREF, ADC10CLK) on MSP430G2102IPW20R are non-functional and must be treated as general-purpose I/O or left unused.

What is the maximum clock frequency supported by MSP430G2102IPW20R?

MSP430G2102IPW20R supports internal DCO frequencies up to 16 MHz, calibrated at four points (1/8/12/16 MHz) and stored in information memory segment A. The device achieves stable operation at 16 MHz within its 1.8–3.6 V supply range, with timing specifications validated per SLAS723H Section 6.2 (DCO Characteristics).

Can MSP430G2102IPW20R be programmed using standard JTAG?

MSP430G2102IPW20R uses Spy-Bi-Wire (SBW), a 2-wire subset of JTAG, not full 4-wire JTAG. Programming requires TI MSP-FET, MSP430 LaunchPad debuggers, or compatible SBW adapters. Pins RST/NMI/SBWTDIO (16) and TEST/SBWTCK (17) are dedicated for SBW; standard JTAG TDI/TDO/TMS/TCK signals are not exposed.

Is MSP430G2102IPW20R pin-compatible with other devices in the G2xx family?

Yes, MSP430G2102IPW20R shares identical 20-pin TSSOP (PW20) pinout with all G2xx devices in that package option (e.g., G2112, G2202, G2302, G2402, G2132, etc.), including matching power, I/O, reset, and debug pin locations. However, functional differences (e.g., ADC presence, Flash size) mean firmware and schematic design must align with the specific variant's capabilities.

What development tools are officially supported for MSP430G2102IPW20R?

Texas Instruments officially supports MSP430G2102IPW20R with Code Composer Studio (CCS) IDE, MSP430ware peripheral driver library, and MSP-FET debugger. Hardware evaluation is enabled via MSP-EXP430G2 LaunchPad (Rev 1.5+), which supports G2xx TSSOP devices through the included ZIF socket and SBW interface - no adapter required.