Texas Instruments MSP430G2152IPW20R

Overview

MSP430G2152IPW20R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 1 kB Flash, 128 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, one 16-bit Timer_A with three capture/compare registers, USI supporting SPI and 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 MSP430G2152IPW20R datasheet, MSP430G2152IPW20R pinout, MSP430G2152IPW20R application, or MSP430G2152IPW20R equivalent, key selection criteria include ADC channel count (1), RAM size (128 B), Timer_A configuration (1× TA3), USI interface support, and TSSOP-20 package compatibility for space-constrained PCB layouts.

Technical Context

The MSP430G2152IPW20R implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF and external crystal options - all configurable via BCSCTL registers.

It supports five low-power modes (LPM0–LPM4), with sub-µA standby (0.5 µA) and off-mode (0.1 µA RAM retention). The ADC10 module includes internal reference, sample-and-hold, and autoscan across eight analog inputs, while the USI provides hardware-level SPI/I²C protocol handling without CPU overhead.

Key Specifications

Pinout & Package

TSSOP-20 (PW) package: 6.5 mm × 4.4 mm body, 0.65 mm pitch, 20-pin surface-mount with exposed pad option. Pinout optimized for minimal external components in sensor interface designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2252IPW20, the MSP430G2152IPW20R offers identical peripheral set but reduced RAM/Flash - suitable for minimal-footprint sensor readout. Versus MSP430G2132IPW20, it adds essential 10-bit ADC capability at no pin-count or power penalty, making it the optimal choice for analog-sensing applications requiring precision digitization.

Availability

MSP430G2152IPW20R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, industrial battery monitors, and capacitive touch interfaces requiring stable component supply and long-term production continuity.

Supply support for MSP430G2152IPW20R 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 over 90 years of innovation in low-power design.

The MSP430G2xx family delivers ultra-low-power mixed-signal microcontrollers optimized for battery-operated sensing, metering, and portable instrumentation - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum ADC10 sampling rate supported by the MSP430G2152IPW20R?

The MSP430G2152IPW20R supports a maximum ADC10 sampling rate of 200 ksps. This is achievable when using the internal reference and configuring the ADC10CLK source appropriately - for example, selecting SMCLK divided by 4. The device's 10-bit SAR architecture ensures consistent conversion linearity across this range, and the autoscan feature allows sequential sampling of up to eight analog inputs without CPU intervention.

Does the MSP430G2152IPW20R support Spy-Bi-Wire debugging?

Yes, the MSP430G2152IPW20R supports Spy-Bi-Wire (SBW) debugging via pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This two-wire interface enables full flash programming, real-time debugging, and memory inspection using standard TI development tools like MSP-FET and Code Composer Studio - eliminating the need for a full 4-wire JTAG header and reducing PCB footprint.

How many I/O pins on the MSP430G2152IPW20R support capacitive touch sensing?

The MSP430G2152IPW20R supports capacitive touch sensing on up to 16 I/O pins - all eight bits of Port P1 and all eight bits of Port P2. Each pin features a dedicated PinOsc enable bit and can be configured as a self- or mutual-capacitance sensor. The on-chip comparator and timer resources allow implementation of robust touch detection algorithms with minimal external components, as confirmed in the MSP430x2xx Family User's Guide (SLAU144).

What clock sources are available for the MSP430G2152IPW20R?

The MSP430G2152IPW20R provides three primary clock sources: an internal digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, an internal very-low-power low-frequency oscillator (~12 kHz), and an external 32.768 kHz crystal connected to XIN/XOUT (P2.6/P2.7). These feed the ACLK, MCLK, and SMCLK domains, and are managed through BCSCTL1/2/3 and DCOCTL registers - enabling flexible trade-offs between accuracy, startup time, and power consumption.

Is the MSP430G2152IPW20R pin-compatible with other devices in the MSP430G2x52 family?

Yes, the MSP430G2152IPW20R is pin-compatible with all TSSOP-20 variants in the MSP430G2x52 family, including MSP430G2252IPW20, MSP430G2352IPW20, and MSP430G2452IPW20. They share identical pin functions, electrical characteristics, and package dimensions - allowing direct substitution in designs where increased Flash (2–8 kB) or RAM (256 B) is needed, provided firmware is recompiled to match the target device's memory map.