Texas Instruments MSP430G2302IPW14R

Overview

MSP430G2302IPW14R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in a 14-pin TSSOP package, featuring 4 KB Flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and support for up to 16 capacitive-touch I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430G2302IPW14R datasheet, MSP430G2302IPW14R pinout, MSP430G2302IPW14R application, or MSP430G2302IPW14R equivalent, key selection considerations include its 4 KB Flash/256 B RAM configuration, USI-based serial communication capability, absence of integrated ADC10 (distinguishing it from MSP430G2x32 variants), Spy-Bi-Wire debug interface, and 14-pin TSSOP footprint for space-constrained designs.

Technical Context

The MSP430G2302IPW14R implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, constant generators, and 16 general-purpose registers. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at four frequencies (1/8/12/16 MHz), internal low-frequency oscillator (VLO), and external crystal support via XIN/XOUT pins - enabling sub-1-µs wake-up from LPM4.

It features two 8-bit digital I/O ports (P1 and P2), with P1 supporting programmable pullup/pulldown resistors and pin-oscillator enable for capacitive touch. The USI module provides hardware-level SPI and I²C protocol handling without CPU intervention, while the WDT+ can operate as either a watchdog or interval timer with interrupt capability.

Key Specifications

Pinout & Package

Package: 14-pin TSSOP (PW14), 5.00 mm × 4.40 mm body, 0.65 mm lead pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2232IPW14R, the MSP430G2302IPW14R offers double Flash capacity and full Timer_A3 functionality for richer real-time control; versus MSP430G2402IPW14R, it trades 4 KB Flash for lower unit cost while retaining identical low-power behavior and peripheral feature set.

Availability

MSP430G2302IPW14R is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI panels, portable medical monitors, and asset tracking beacons requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MSP430G2302IPW14R 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 MSP430G2xx family was designed for ultra-low-power embedded applications where battery life, small form factor, and rapid development are critical - targeting sensor interfaces, portable instrumentation, and energy-harvesting systems.

FAQ

Does the MSP430G2302IPW14R include an integrated ADC?

No, the MSP430G2302IPW14R does not include the ADC10 module. While its pinout shares labels like A0–A7 and VREF±, these functions are disabled per TI's device differentiation: ADC10 is exclusive to MSP430G2x32 variants (e.g., MSP430G2332). The MSP430G2302IPW14R relies on external ADCs or GPIO-only signal conditioning. This omission reduces die size and cost while maintaining identical low-power operation and peripheral set otherwise.

What is the maximum operating frequency of the MSP430G2302IPW14R?

The MSP430G2302IPW14R supports a maximum system clock (MCLK) frequency of 16 MHz, achieved via its factory-calibrated digitally controlled oscillator (DCO). This frequency is accessible through software configuration of DCOCTL and BCSCTL1 registers. All timing-critical peripherals - including Timer_A, USI, and WDT+ - operate synchronously with MCLK, enabling deterministic real-time response at full speed without external crystal dependency.

Can the MSP430G2302IPW14R be programmed in-system after soldering?

Yes, the MSP430G2302IPW14R supports in-system programming (ISP) via its Spy-Bi-Wire interface using only two pins (RST/NMI/SBWTDIO and TEST/SBWTCK). No external programming voltage is required - standard 1.8–3.6 V supply suffices. TI's MSP-FET and open-source tools like naken_asm enable full flash read/write/erase, security fuse configuration, and debug access directly on the target PCB without removing the device.

How many I/O pins does the MSP430G2302IPW14R provide, and what are their capabilities?

The MSP430G2302IPW14R provides 12 usable digital I/O pins: P1.0–P1.7 (8 pins) and P2.0–P2.5 (6 pins, though P2.6 and P2.7 are multiplexed with XIN/XOUT). All support individually configurable direction, pullup/pulldown resistors (via P1REN/P2REN), interrupt-on-change, and pin-oscillator enable for capacitive touch. Port pins do not support analog input or DAC output, as ADC10 and comparator modules are excluded from this variant.

Is the MSP430G2302IPW14R pin-compatible with other devices in the MSP430G2xx family?

Yes, the MSP430G2302IPW14R shares identical 14-pin TSSOP (PW14) packaging and pin mapping with other G2xx 14-pin variants including MSP430G2102IPW14, MSP430G2202IPW14, MSP430G2402IPW14, MSP430G2132IPW14, MSP430G2232IPW14, and MSP430G2432IPW14. Peripheral register layout and memory map alignment ensure firmware portability across same-package G2xx devices, subject to feature availability (e.g., ADC presence or Timer_A register count).