Texas Instruments MSP430G2353IPW20R

Overview

MSP430G2353IPW20R from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference, two 16-bit Timer_A modules (each with three capture/compare registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and an on-chip analog comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes requiring precise analog acquisition and low-latency wake-up.

For engineers reviewing the MSP430G2353IPW20R datasheet, MSP430G2353IPW20R pinout, MSP430G2353IPW20R application, or MSP430G2353IPW20R equivalent, key selection criteria include its 20-pin TSSOP package, ADC10 channel count (8 inputs), standby current (0.5 µA), sub-1-µs wake-up time, and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430G2353IPW20R implements a 16-bit RISC CPU with constant generators and seven addressing modes, executing instructions in 62.5 ns at 16 MHz. Its clock system integrates a digitally controlled oscillator (DCO), internal LF oscillator, and external crystal support (32 kHz), enabling dynamic clock gating across five low-power modes including LPM4 (0.1 µA RAM retention).

Peripheral integration includes dual USCI modules supporting asynchronous UART with auto-baud detection for LIN, synchronous SPI master/slave, and I²C master/slave; the ADC10 supports autoscan, sample-and-hold, and internal/external reference selection; and the comparator provides slope A/D conversion capability without ADC resource usage.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (PW20), 0.65 mm pitch, body size 6.5 mm × 4.4 mm, RoHS-compliant, thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2553IPW20R and MSP430G2453IPW20R, the MSP430G2353IPW20R delivers optimal balance of analog capability (8-channel ADC10), ultra-low power (0.5 µA standby), and cost for entry-level sensor nodes where extended RAM or hardware multiply is unnecessary.

Availability

MSP430G2353IPW20R is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, capacitive touch interfaces, and low-cost IoT edge nodes requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2353IPW20R 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 expertise in ultra-low-power microcontrollers for industrial and sensing applications.

The MSP430G2xx family was designed specifically for cost-sensitive, battery-operated systems requiring high analog integration, rapid wake-up, and robust debug capability-exemplified by the MSP430G2353IPW20R's optimized 20-pin TSSOP footprint and calibrated DCO.

FAQ

What is the maximum operating frequency of the MSP430G2353IPW20R?

The MSP430G2353IPW20R supports a maximum CPU clock frequency of 16 MHz via its digitally controlled oscillator (DCO), which is factory-calibrated at 1/8/12/16 MHz. This allows deterministic 62.5-ns instruction execution while maintaining ultra-low power consumption in active mode (230 µA at 1 MHz, 2.2 V). External crystals up to 16 MHz may also be used with appropriate configuration.

Does the MSP430G2353IPW20R include an integrated ADC, and what are its key specifications?

Yes, the MSP430G2353IPW20R includes a 10-bit successive approximation register (SAR) ADC (ADC10) with 200-ksps sampling rate, 8 analog input channels (A0–A7), internal 1.5 V/2.5 V reference, sample-and-hold, and autoscan capability. It is exclusively available on MSP430G2x53 devices-not on G2x13 variants-and supports both internal and external reference configurations for flexible sensor interfacing.

How many USCI modules does the MSP430G2353IPW20R support, and what protocols do they implement?

The MSP430G2353IPW20R integrates two Universal Serial Communication Interfaces: USCI_A0 supports UART (with LIN auto-baud detection and IrDA encoding/decoding) and synchronous SPI; USCI_B0 supports SPI and I²C (both master and slave modes). These modules operate independently, enabling concurrent serial communication on different buses without CPU overhead.

What debug interface is supported by the MSP430G2353IPW20R, and how is it implemented physically?

The MSP430G2353IPW20R supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG, using pins 16 (RST/NMI/SBWTDIO) and 17 (TEST/SBWTCK). This interface enables full in-circuit debugging, flash programming, and real-time emulation with minimal PCB routing-critical for space-constrained designs. No external voltage programming is required.

What are the low-power modes available on the MSP430G2353IPW20R, and what is the lowest current draw achievable?

The MSP430G2353IPW20R offers five software-selectable low-power modes: LPM0 through LPM4. The lowest power state is LPM4 (off mode with RAM retention), drawing just 0.1 µA at 3 V. Wake-up from LPM4 to active mode occurs in under 1 µs via DCO stabilization, making it ideal for duty-cycled sensor applications demanding nanowatt-level quiescent power.