Texas Instruments MSP430G2302IPW20R

Overview

MSP430G2302IPW20R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 4 KB flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) supporting SPI and I²C, and up to 16 capacitive-touch enabled 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 MSP430G2302IPW20R datasheet, MSP430G2302IPW20R pinout, MSP430G2302IPW20R application, or MSP430G2302IPW20R equivalent, key selection criteria include its 20-pin TSSOP package, 4 KB flash memory size, USI-based serial interface capability, ultra-low standby current (0.5 µA), and absence of integrated ADC10 - distinguishing it from MSP430G2x32 variants.

Technical Context

The MSP430G2302IPW20R implements a 16-bit RISC CPU with 62.5-ns instruction cycle time and five software-selectable low-power modes, including LPM4 with 0.1 µA off-mode current (RAM retention). Its clock system integrates a digitally controlled oscillator (DCO) calibrated at four frequencies up to 16 MHz, plus internal LF and external crystal (32 kHz) support.

It features Spy-Bi-Wire on-chip emulation logic for debugging and programming, no external programming voltage required, and programmable code protection via security fuse. Port P1 supports capacitive-touch sensing on all eight pins; Port P2 provides eight general-purpose I/O pins in the 20-pin TSSOP package, each with individually configurable pullup/pulldown resistors and interrupt edge select.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 mm × 4.4 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2232IPW20 and MSP430G2402IPW20, the MSP430G2302IPW20R offers balanced flash capacity (4 KB) for mid-complexity sensor firmware while maintaining identical low-power behavior, USI timing, and pin compatibility - making it optimal for scalable designs requiring moderate code space without over-provisioning.

Availability

MSP430G2302IPW20R is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI interfaces, and portable data loggers requiring stable component supply, long-term lifecycle assurance, and TI-qualified manufacturing traceability.

Supply support for MSP430G2302IPW20R 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 is designed for ultra-low-power embedded applications where battery life, small footprint, and integrated mixed-signal capability are critical - especially in portable instrumentation and wireless sensor endpoints.

FAQ

Does the MSP430G2302IPW20R include an integrated ADC?

No, the MSP430G2302IPW20R does not include an ADC10 module. It belongs to the MSP430G2x02 series, which omits the 10-bit analog-to-digital converter present in the G2x32 variants. External ADCs must be interfaced via USI (SPI/I²C) or GPIO for analog signal acquisition. This distinction is confirmed in Table 1 and functional block diagrams of the SLAS723H datasheet.

What is the maximum operating frequency of the MSP430G2302IPW20R?

The MSP430G2302IPW20R supports a maximum system clock (MCLK) frequency of 16 MHz, achieved using the factory-calibrated digitally controlled oscillator (DCO). This is verified in the "Basic Clock Module Configurations" section and Table 10 of the SLAS723H datasheet, which lists CAL_DCO_16MHz calibration constants stored in information memory.

Can the MSP430G2302IPW20R be programmed in-system without a JTAG emulator?

Yes, the MSP430G2302IPW20R supports in-system programming via the Spy-Bi-Wire (SBW) interface using only two pins (RST/NMI/SBWTDIO and TEST/SBWTCK), with no external programming voltage required. The device includes on-chip emulation logic, enabling firmware updates directly through the SBW interface using standard TI tools like MSP-FET or LaunchPad debuggers.

Is the MSP430G2302IPW20R pin-compatible with other devices in the MSP430G2xx family?

Yes, the MSP430G2302IPW20R is pin-compatible with other 20-pin TSSOP MSP430G2xx devices including MSP430G2202IPW20, MSP430G2402IPW20, and MSP430G2332IPW20. Pin functions for P1.x, P2.x, RST, TEST, XIN/XOUT, and power terminals match across these variants, enabling drop-in replacement where peripheral requirements align - though ADC presence and flash size differ.

What low-power modes are supported by the MSP430G2302IPW20R?

The MSP430G2302IPW20R supports six operating modes: Active Mode (AM) and five software-selectable low-power modes (LPM0–LPM4). LPM4 achieves 0.1 µA off-mode current with RAM retention, while LPM3 draws 0.2 µA with ACLK active. These modes are configured via the status register (SR) and detailed in Section "Operating Modes" of the SLAS723H datasheet.