Texas Instruments MSP430G2132IPW14R

Overview

MSP430G2132IPW14R 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/I²C, and up to 8 capacitive-touch enabled I/O pins in a 14-pin TSSOP package. It targets battery-powered sensor nodes and portable measurement systems requiring sub-1-µs wake-up and <0.1 µA off-mode current.

For engineers reviewing the MSP430G2132IPW14R datasheet, MSP430G2132IPW14R pinout, MSP430G2132IPW14R application, or MSP430G2132IPW14R equivalent, key selection criteria include verified ADC10 channel count (1), confirmed 14-pin TSSOP package mapping, validated 1-kB Flash/128-B RAM memory configuration, documented 10-bit SAR ADC performance at 200 ksps, and confirmed Spy-Bi-Wire debug interface support.

Technical Context

The MSP430G2132IPW14R implements a 16-bit CPU with seven addressing modes and 51 instructions, integrated with a basic clock module providing ACLK (LF oscillator or 32-kHz crystal), SMCLK, and MCLK sourced from a digitally controlled oscillator (DCO) calibrated to 1/8/12/16 MHz. Its ADC10 module includes internal VREF+/VREF− generation, sample-and-hold, and autoscan across eight analog inputs (A0–A7).

Power management uses five software-selectable low-power modes (LPM0–LPM4); LPM4 achieves 0.1 µA off-mode current with RAM retention. Wake-up from standby occurs in under 1 µs via DCO stabilization. The USI supports master/slave SPI and I²C with programmable clock polarity and phase.

Key Specifications

Pinout & Package

Package: 14-pin TSSOP (PW14), 5.0 mm × 6.4 mm body, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2232IPW14 and MSP430FR2132IPW14, the MSP430G2132IPW14R offers optimal cost-performance balance for fixed-function sensor nodes where 1 kB Flash suffices and FRAM advantages are unnecessary - reducing BoM cost by ~12% versus FRAM variant and simplifying memory management versus larger Flash option.

Availability

MSP430G2132IPW14R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial control panels requiring stable component supply, long-lifecycle assurance, and consistent TI manufacturing traceability.

Supply support for MSP430G2132IPW14R 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 personal electronics markets.

The MSP430G2xx family was designed specifically for ultra-low-power sensing and measurement applications, emphasizing sub-µA sleep currents, fast wake-up, and integrated analog peripherals to minimize external component count.

FAQ

What is the maximum ADC sampling rate supported by the MSP430G2132IPW14R?

The MSP430G2132IPW14R supports a maximum ADC10 sampling rate of 200 ksps. This specification is achieved with internal reference enabled and ADC10CLK derived from the DCO at 5 MHz. At this rate, the device can perform full 10-bit conversions every 5 µs, enabling real-time monitoring of rapidly changing analog signals such as audio envelope detection or motor current ripple in compact sensor designs.

Does the MSP430G2132IPW14R support hardware-based capacitive touch sensing?

Yes, the MSP430G2132IPW14R supports hardware-accelerated capacitive touch sensing on up to 8 I/O pins (P1.0–P1.7). Each pin includes an integrated pin-oscillator circuit that enables low-power, low-component-count touch-button implementation without external RC networks. The MSP430G2132IPW14R's built-in oscillator and dedicated timing control eliminate the need for external timers or microsecond-precision GPIO toggling in touch firmware.

What debug interface does the MSP430G2132IPW14R use, and how many pins are required?

The MSP430G2132IPW14R uses the Spy-Bi-Wire (SBW) interface, a 2-wire subset of JTAG requiring only two pins: RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This minimizes PCB routing complexity and preserves I/O for application use. SBW supports full in-system programming, real-time debugging, and flash security fuse configuration without requiring a dedicated 4-pin JTAG header.

How many analog input channels does the ADC10 module on the MSP430G2132IPW14R support?

The ADC10 module on the MSP430G2132IPW14R supports eight analog input channels (A0 through A7), mapped to P1.0–P1.7 respectively. All eight channels are accessible in the 14-pin TSSOP package. The autoscan feature allows hardware-controlled sequential conversion across all enabled channels without CPU involvement, reducing firmware overhead and power consumption during multi-sensor acquisition.

What is the supply voltage range for normal operation and flash programming of the MSP430G2132IPW14R?

The MSP430G2132IPW14R operates from 1.8 V to 3.6 V during normal program execution. For flash memory programming, the supply voltage must be within 2.2 V to 3.6 V - a narrower valid window than runtime operation. This ensures reliable charge-pump operation during Flash write/erase cycles. Operation below 2.2 V disables flash programming capability but maintains full CPU and peripheral functionality.