Texas Instruments MSP430G2302IRSA16R

Overview

MSP430G2302IRSA16R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 16-pin QFN (RSA) 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 MSP430G2302IRSA16R datasheet, MSP430G2302IRSA16R pinout, MSP430G2302IRSA16R application, or MSP430G2302IRSA16R equivalent, key selection criteria include its 4 KB Flash size, USI-based serial interface capability, 16-pin QFN footprint, ultra-low standby current (0.5 µA), and absence of integrated ADC10 - distinguishing it from MSP430G2x32 variants.

Technical Context

The MSP430G2302IRSA16R implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its basic clock module provides ACLK, SMCLK, and MCLK from internal DCO (calibrated at 1/8/12/16 MHz), LF oscillator, or external 32-kHz crystal.

It supports five low-power modes (LPM0–LPM4), enabling sub-1 µs wake-up from standby via interrupt, and integrates Spy-Bi-Wire debug interface with on-chip emulation logic. Port P1 offers eight programmable I/O pins with individually configurable pullup/pulldown resistors and pin-oscillator enable for capacitive touch; Port P2 provides two I/O pins in the RSA16 package.

Key Specifications

Pinout & Package

Package: 16-pin QFN (RSA), 4 mm × 4 mm, exposed thermal pad (recommended connection to DVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2232IRSA16, the MSP430G2302IRSA16R provides double Flash capacity and full Timer_A capture/compare functionality; compared with MSP430G2402IRSA16, it trades UART capability for lower cost and identical power/performance in SPI/I²C-only systems.

Availability

MSP430G2302IRSA16R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical devices, industrial control panels, and energy harvesting endpoints requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2302IRSA16R 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 for industrial, automotive, and consumer markets.

The MSP430G2xx family was designed for ultra-low-power embedded applications where battery life, small footprint, and integrated analog/mixed-signal peripherals are critical - exemplified by the MSP430G2302IRSA16R's balance of Flash, I/O, and power efficiency.

FAQ

Does the MSP430G2302IRSA16R include an integrated ADC?

No, the MSP430G2302IRSA16R does not include an ADC10 module. Per TI's SLAS723H datasheet Table 1 and functional block diagrams, ADC10 is exclusive to MSP430G2x32 series devices (e.g., MSP430G2332). The MSP430G2302IRSA16R belongs to the G2x02 series and omits the ADC entirely - external ADC or alternative MCU required for analog sensing.

What debug interface does the MSP430G2302IRSA16R support?

The MSP430G2302IRSA16R supports Spy-Bi-Wire (SBW) debug interface using pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 15). JTAG is not enabled on this device; SBW provides full in-system programming, breakpoint debugging, and memory inspection with only two wires, reducing PCB routing complexity.

Can the MSP430G2302IRSA16R drive capacitive touch buttons?

Yes, the MSP430G2302IRSA16R supports capacitive touch sensing on up to 16 I/O pins using its integrated pin-oscillator circuitry. Each supported pin (P1.0–P1.7, P2.0–P2.5) can be individually configured for touch detection without external components, enabling robust, low-cost human interface design in space-constrained applications.

What is the maximum operating frequency of the MSP430G2302IRSA16R's DCO?

The digitally controlled oscillator (DCO) in the MSP430G2302IRSA16R is factory-calibrated at four frequencies: 1 MHz, 8 MHz, 12 MHz, and 16 MHz. When configured for highest speed, the DCO delivers 16 MHz MCLK - sufficient for real-time sensor processing and USI-based SPI/I²C communication at full peripheral bandwidth.

Is the MSP430G2302IRSA16R pin-compatible with other 16-pin MSP430G2xx devices?

Yes, the MSP430G2302IRSA16R shares the identical 16-pin QFN (RSA) package and pinout with other MSP430G2xx devices in the same package option (e.g., MSP430G2202IRSA16, MSP430G2402IRSA16). Signal mapping, power, ground, and debug pins are consistent across the family - enabling layout reuse and migration paths within the G2xx platform.