Texas Instruments MSP430G2453IPW28R

Overview

MSP430G2453IPW28R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 8 KB flash, 512 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, two 16-bit Timer_A modules with three capture/compare registers each, 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 and portable measurement systems.

For engineers reviewing the MSP430G2453IPW28R datasheet, MSP430G2453IPW28R pinout, MSP430G2453IPW28R application, or MSP430G2453IPW28R equivalent, key selection criteria include its 28-pin TSSOP package, ADC10 channel count (8-channel), standby current (0.5 µA), wake-up time (<1 µs), and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430G2453IPW28R implements a 16-bit CPU with 62.5-ns instruction cycle time, constant generators, and register-based architecture optimized for code efficiency. Its clock system integrates a digitally controlled oscillator (DCO), internal LF oscillator, and external 32-kHz crystal support, enabling dynamic low-power mode transitions.

It features five software-selectable low-power modes (LPM0–LPM4), with LPM4 drawing only 0.1 µA in RAM-retention mode. The ADC10 supports internal reference (1.5 V or 2.5 V), sample-and-hold, and autoscan across up to eight analog inputs - all confirmed for this exact 28-pin TSSOP variant.

Key Specifications

Pinout & Package

Package: 28-pin TSSOP (PW28), 0.65 mm pitch, body size 9.7 × 4.4 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2553IPW28, the MSP430G2453IPW28R offers identical peripheral integration at lower flash density, reducing cost without sacrificing ADC10 capability; versus MSP430G2403IPW28, it adds essential 10-bit sampling functionality while maintaining footprint and power profile.

Availability

MSP430G2453IPW28R is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, and low-cost motor controllers requiring stable component supply, long-term manufacturability, and TI's qualified production process.

Supply support for MSP430G2453IPW28R 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 over 90 years of innovation in power efficiency and signal integrity.

The MSP430G2xx family was designed specifically for ultra-low-power embedded applications where battery life, small footprint, and integrated analog functionality are critical - exemplified by the MSP430G2453IPW28R's optimized balance of flash, ADC, and timer resources in a 28-pin TSSOP.

FAQ

What is the maximum ADC10 sampling rate supported by the MSP430G2453IPW28R?

The MSP430G2453IPW28R supports a maximum ADC10 sampling rate of 200 ksps under specified conditions (VCC ≥ 2.2 V, fADC10CLK = 5 MHz). This rate is achievable in single-channel mode with internal reference enabled. In autoscan mode across multiple channels, effective throughput depends on conversion clock setup and sample-and-hold timing - full details are in Section 4.2.1 of the SLAS735J datasheet for the MSP430G2453IPW28R.

Does the MSP430G2453IPW28R support Spy-Bi-Wire debugging?

Yes, the MSP430G2453IPW28R supports full Spy-Bi-Wire (SBW) debugging via pins 24 (RST/NMI/SBWTDIO) and 25 (TEST/SBWTCK). This two-wire interface enables programming, breakpoint setting, and real-time variable inspection without requiring a full 4-wire JTAG header. The SBW protocol is natively supported by TI's MSP-FET and open-source tools like naken_asm and mspdebug.

What are the valid supply voltage ranges for the MSP430G2453IPW28R?

The MSP430G2453IPW28R operates across a validated supply range of 1.8 V to 3.6 V. Operation below 1.8 V may cause brownout reset or undefined behavior; above 3.6 V risks permanent damage. The internal brownout detector (BOR) triggers reset below ~1.7 V (typical), ensuring reliable startup and shutdown sequencing. This range aligns with common single-cell lithium and alkaline battery configurations.

Can the MSP430G2453IPW28R drive capacitive-touch sensors directly?

Yes, the MSP430G2453IPW28R includes dedicated capacitive-touch enable bits for all P1.x pins. Each pin can be configured with an internal oscillator to generate high-frequency signals for self-capacitance or mutual-capacitance sensing. No external RC network or dedicated touch controller is required - raw capacitance measurements are processed via the built-in comparator and timer resources, as documented in the MSP430G2xx Family User's Guide (SLAU144) and confirmed for the MSP430G2453IPW28R variant.

Is the MSP430G2453IPW28R pin-compatible with other devices in the MSP430G2x53 family?

Yes, the MSP430G2453IPW28R is fully pin-compatible with other 28-pin TSSOP variants in the MSP430G2x53 family, including MSP430G2553IPW28 and MSP430G2353IPW28. All share identical PW28 pinout, electrical characteristics, and peripheral mapping. Firmware developed for one can run on another without hardware changes - though flash size, RAM, and ADC channel count differ, requiring software validation for memory-bound or feature-dependent code.