Texas Instruments MSP430G2102IPW14R

Overview

MSP430G2102IPW14R from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 1 kB Flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) supporting SPI and 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 MSP430G2102IPW14R datasheet, MSP430G2102IPW14R pinout, MSP430G2102IPW14R application, or MSP430G2102IPW14R equivalent, key selection criteria include its 14-pin TSSOP package, absence of integrated ADC10 (distinguishing it from G2x32 variants), verified 1.8–3.6 V supply range, and confirmed support for five low-power modes including LPM4 with 0.1 µA retention.

Technical Context

The MSP430G2102IPW14R 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) calibrated at 1/8/12/16 MHz, internal LF oscillator, and external crystal support - enabling sub-1 µs wake-up from standby mode.

Peripheral integration includes USI for synchronous serial communication (SPI/I²C), Timer_A3 for PWM and capture/compare timing, and two 8-bit I/O ports (P1 and P2) with individually configurable pullup/pulldown resistors and capacitive-touch-capable pin oscillators - all managed via memory-mapped registers accessible by all CPU instructions.

Key Specifications

Pinout & Package

Package: 14-pin Thin Shrink Small Outline Package (TSSOP), body size 5.0 mm × 4.4 mm, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2202IPW14 and MSP430G2112IPW14, the MSP430G2102IPW14R provides the smallest memory footprint and lowest cost in the G2x02 family while retaining full USI, Timer_A, and low-power capabilities - making it optimal for deeply embedded control tasks where analog conversion is handled externally or unnecessary.

Availability

MSP430G2102IPW14R is available at Aetrix Electronics and suitable for smart meter sensor nodes, industrial temperature monitors, wireless remote controls, portable medical devices, and battery-backed real-time clocks requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2102IPW14R 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 and embedded processing solutions, with over 90 years of innovation in low-power design and microcontroller architecture.

The MSP430G2x02 product line was engineered specifically for ultra-low-power, cost-sensitive embedded applications - emphasizing rapid wake-up, minimal active current, and integrated peripherals to reduce external component count in battery-operated systems.

FAQ

Does the MSP430G2102IPW14R include an integrated analog-to-digital converter (ADC)?

No, the MSP430G2102IPW14R does not include an ADC. It belongs to the G2x02 series, which omits the ADC10 module present in G2x32 variants. Pin functions labeled A0–A7 in the datasheet are reserved and non-functional on MSP430G2102IPW14R. External ADCs or GPIO-based RC decay methods must be used for analog sensing.

What debug interface does the MSP430G2102IPW14R support?

The MSP430G2102IPW14R supports Spy-Bi-Wire (SBW), a two-wire variant of JTAG implemented on pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This interface enables full in-system programming, breakpoint debugging, and memory inspection using TI's MSP-FET or compatible LaunchPad development tools.

Can the MSP430G2102IPW14R operate from a single 1.8 V supply?

Yes, the MSP430G2102IPW14R is fully specified to operate across 1.8 V to 3.6 V. At 1.8 V, it maintains full functionality including 16 MHz DCO operation (with reduced stability margin), USI communication, Timer_A operation, and all five low-power modes - making it suitable for direct connection to lithium-thionyl chloride or regulated 1.8 V rails.

How many I/O pins are available on the MSP430G2102IPW14R in the 14-pin TSSOP package?

The MSP430G2102IPW14R provides eight usable I/O pins: P1.0 through P1.7 (Pins 2–9), plus P2.6 and P2.7 (Pins 13–12). Port P2.0–P2.5 are not bonded out in the 14-pin TSSOP package and are unavailable - confirmed by TI's SLAS723H datasheet Table 1 and pinout diagrams.

Is the MSP430G2102IPW14R pin-compatible with other devices in the MSP430G2x02 family?

Yes, all MSP430G2x02 devices in the 14-pin TSSOP package (e.g., MSP430G2202IPW14, MSP430G2112IPW14) share identical pinouts and electrical characteristics. Firmware and hardware designs can be reused across this subset with only Flash/RAM and peripheral differences requiring software adaptation.