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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Texas Instruments MSP430G2432IPW20R

Name: MSP430G2432IPW20R
Brand: Texas Instruments
SKU: MSP430G2432IPW20R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MSP430G2432IPW20R

Manufacturer:: Texas Instruments

Category:: Microcontrollers

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: MSP430G2432IPW20R.pdf

Description:: IC MCU 16BIT 8KB FLASH 20TSSOP

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Product details

Overview

MSP430G2432IPW20R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 16 KB flash, 256 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 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 MSP430G2432IPW20R datasheet, MSP430G2432IPW20R pinout, MSP430G2432IPW20R application, or MSP430G2432IPW20R equivalent, key selection criteria include its 20-pin TSSOP package, integrated ADC10 channel count (8), low-power operating modes (LPM0–LPM4), Spy-Bi-Wire debug interface, and calibrated DCO clock source up to 16 MHz.

Technical Context

The MSP430G2432IPW20R implements a 16-bit CPU with seven addressing modes and 51 instructions, paired with a basic clock module supporting ACLK (LF oscillator or 32-kHz crystal), SMCLK, and MCLK sourced from a digitally controlled oscillator (DCO) with factory-calibrated frequencies at 1/8/12/16 MHz. Its interrupt system includes 21 maskable sources mapped to 16 vectors, with dedicated flags for ADC10, USI, Timer_A, and port interrupts.

Peripherals are memory-mapped with word- and byte-accessible registers; ADC10 uses a SAR architecture with internal reference, sample-and-hold, and data transfer controller (DTC) for autonomous conversion sequencing. The USI module provides hardware-level SPI and I²C protocol support without CPU intervention during transfers.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	16-bit RISC CPU with 16 general-purpose registers and constant generators for optimized code efficiency
Flash / RAM	16 KB flash memory with in-system programmability via Spy-Bi-Wire; 256 B RAM for data retention in LPM3/LPM4
ADC10	10-bit SAR ADC with 8 input channels, internal reference (1.5 V/2.5 V), autoscan mode, and 200-ksps max sampling rate
Timer_A	One 16-bit Timer_A with three capture/compare registers supporting PWM, interval timing, and input capture with interrupt capability
USI Module	Universal Serial Interface supporting master/slave SPI (3-wire/4-wire) and I²C (7-bit/10-bit addressing) with programmable clock polarity and phase
Power Modes	Five low-power modes (LPM0–LPM4); active mode current = 220 µA @ 1 MHz/2.2 V; LPM4 current = 0.1 µA with RAM retention
Clock Sources	Digital Controlled Oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz); LF oscillator and 32-kHz crystal support for ACLK

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1, DVCC	Supply voltage input	Main digital supply (1.8–3.6 V); requires local decoupling capacitor
2, P1.0/TA0CLK/ACLK/A0	Multi-function I/O	Configurable as GPIO, Timer_A clock input, ACLK output, or ADC10 channel 0 analog input
3, P1.1/TA0.0/A1	Multi-function I/O	GPIO, Timer_A CCI0A input/Out0 output, or ADC10 channel 1 analog input
4, P1.2/TA0.1/A2	Multi-function I/O	GPIO, Timer_A CCI1A input/Out1 output, or ADC10 channel 2 analog input
5, P1.3/ADC10CLK/VREF-/VEREF-/A3	ADC control & analog input	ADC10 conversion clock output, negative reference input, or ADC10 channel 3 analog input
6, P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+	Multi-function I/O	GPIO, Timer_A CCI2A input/Out2 output, SMCLK output, ADC10 channel 4 input, or positive reference input
7, P1.5/TA0.0/SCLK/A5/TMS	Multi-function I/O	GPIO, Timer_A Out0 output, USI clock input/output, ADC10 channel 5 input, or JTAG test mode select
8, P1.6/TA0.1/SDO/SCL/A6/TDI/TCLK	Multi-function I/O	GPIO, Timer_A Out1 output, USI data output/I²C clock, ADC10 channel 6 input, or JTAG test data input
9, P1.7/SDI/SDA/A7/TDO/TDI	Multi-function I/O	GPIO, USI data input/I²C data, ADC10 channel 7 input, or JTAG test data output/input
10, RST/NMI/SBWTDIO	Reset & debug interface	Active-low reset input, non-maskable interrupt, or Spy-Bi-Wire test data I/O during programming
11, TEST/SBWTCK	Debug interface	JTAG test mode select or Spy-Bi-Wire test clock input; connects to device protection fuse
12, XOUT/P2.7	Oscillator & GPIO	Crystal oscillator output or general-purpose I/O (P2.7)
13, XIN/P2.6/TA0.1	Oscillator & timer	Crystal oscillator input, GPIO (P2.6), or Timer_A Out1 output
14, DVSS	Ground reference	Digital ground return path; must be connected to system ground plane
15, AVCC	Analog supply	Separate analog supply input (1.8–3.6 V); recommended to tie to DVCC with ferrite bead if noise-sensitive
16, AVSS	Analog ground	Analog ground return; should be star-connected to DVSS near device
17–20, P2.0–P2.5	General-purpose I/O	Eight-port P2 pins (only P2.0–P2.5 exposed in 20-pin TSSOP); each supports pullup/pulldown enable and interrupt edge select

Key Features

Feature	Design Value
Ultra-low-power operation	0.1 µA in LPM4 with RAM retention enables multi-year battery life in coin-cell-powered sensors
Integrated capacitive-touch I/O	Up to 16 pins support pin-oscillator-based touch detection without external components
Factory-calibrated DCO	Four precise DCO frequencies (1/8/12/16 MHz) stored in info memory eliminate need for external crystal in many applications
On-chip emulation logic	Spy-Bi-Wire interface enables full debugging and flash programming using only two pins (RST and TEST)
Programmable code security	Security fuse prevents unauthorized readout of flash contents; irreversible once blown
Brownout detector	Monitors DVCC and asserts reset if voltage drops below threshold, preventing erratic operation during power ramp

Applications

Smart Sensor Node	Portable Medical Monitor
Use Scenario: Low-cost environmental sensor node measuring temperature, humidity, and light using onboard ADC and I²C sensors. IC Role / Device Role / Timing Role: Central MCU managing sensor acquisition, signal conditioning, low-power scheduling, and wireless transmission timing via USI-driven UART or BLE interface. Use Value: 220 µA active current and sub-µA standby enable >5-year operation on CR2032; integrated ADC10 eliminates external signal chain components.	Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals and computing SpO₂ in real time. IC Role / Device Role / Timing Role: Signal acquisition controller performing synchronized dual-channel ADC sampling, digital filtering, and LED drive timing via Timer_A PWM outputs. Use Value: 200-ksps ADC10 with autoscan and DTC enables continuous 125-Hz dual-channel sampling without CPU overhead; LPM3 mode reduces average power during idle intervals.
Industrial Control Panel	Energy Harvesting IoT Endpoint
Use Scenario: Touch-enabled HMI panel for HVAC or lighting control with capacitive buttons and status LEDs. IC Role / Device Role / Timing Role: Capacitive-touch processor scanning up to 16 electrodes, debouncing inputs, and driving LED indicators via GPIO and Timer_A PWM. Use Value: Built-in pin-oscillator circuitry eliminates external RC networks; 8-channel ADC monitors auxiliary analog inputs (e.g., ambient light, voltage rails).	Use Scenario: Solar- or thermal-harvested sensor transmitting temperature and pressure data via LoRaWAN every 10 minutes. IC Role / Device Role / Timing Role: Energy-aware system controller waking from LPM4 on timer interrupt, performing ADC measurements, processing data, and triggering radio transmit sequence. Use Value: Wake-up time <1 µs from LPM4 ensures minimal energy loss during duty-cycled operation; 0.5 µA LPM3 current extends runtime under partial harvest conditions.

Smart Sensor Node

Portable Medical Monitor

Use Scenario: Low-cost environmental sensor node measuring temperature, humidity, and light using onboard ADC and I²C sensors.

IC Role / Device Role / Timing Role: Central MCU managing sensor acquisition, signal conditioning, low-power scheduling, and wireless transmission timing via USI-driven UART or BLE interface.

Use Value: 220 µA active current and sub-µA standby enable >5-year operation on CR2032; integrated ADC10 eliminates external signal chain components.

Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals and computing SpO₂ in real time.

IC Role / Device Role / Timing Role: Signal acquisition controller performing synchronized dual-channel ADC sampling, digital filtering, and LED drive timing via Timer_A PWM outputs.

Use Value: 200-ksps ADC10 with autoscan and DTC enables continuous 125-Hz dual-channel sampling without CPU overhead; LPM3 mode reduces average power during idle intervals.

Industrial Control Panel

Energy Harvesting IoT Endpoint

Use Scenario: Touch-enabled HMI panel for HVAC or lighting control with capacitive buttons and status LEDs.

IC Role / Device Role / Timing Role: Capacitive-touch processor scanning up to 16 electrodes, debouncing inputs, and driving LED indicators via GPIO and Timer_A PWM.

Use Value: Built-in pin-oscillator circuitry eliminates external RC networks; 8-channel ADC monitors auxiliary analog inputs (e.g., ambient light, voltage rails).

Use Scenario: Solar- or thermal-harvested sensor transmitting temperature and pressure data via LoRaWAN every 10 minutes.

IC Role / Device Role / Timing Role: Energy-aware system controller waking from LPM4 on timer interrupt, performing ADC measurements, processing data, and triggering radio transmit sequence.

Use Value: Wake-up time <1 µs from LPM4 ensures minimal energy loss during duty-cycled operation; 0.5 µA LPM3 current extends runtime under partial harvest conditions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MSP430G2553IPW20R	24 KB flash, 512 B RAM, enhanced USI (SPI/I²C/UART), no ADC10 calibration data in info memory	Higher memory headroom for complex firmware; UART support simplifies host communication but increases active current	Select when needing larger code space or native UART; verify ADC accuracy requirements - MSP430G2432IPW20R retains factory calibration tags for improved linearity
MSP430FR2433IPW20R	Ferroelectric RAM (6.5 KB FRAM), 2 KB RAM, higher active current (330 µA), no factory DCO calibration	Non-volatile FRAM enables instant write logging and eliminates flash wear-out concerns in high-write-cycle applications	Select for data-logging endpoints requiring frequent parameter updates; accept trade-off in power and missing DCO calibration vs. MSP430G2432IPW20R

Compared with MSP430G2553IPW20R and MSP430FR2433IPW20R, the MSP430G2432IPW20R delivers optimal balance of ultra-low quiescent current, factory-trimmed ADC10 linearity, and calibrated DCO stability - making it ideal for cost-sensitive, battery-constrained sensor nodes where precision and longevity outweigh memory expansion needs.

Availability

MSP430G2432IPW20R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, industrial HMI panels, and energy harvesting IoT endpoints requiring stable component supply across long-lifecycle designs.

Supply support for MSP430G2432IPW20R 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 was designed specifically for ultra-low-power sensing and measurement applications, emphasizing extended battery life, integrated analog peripherals, and robust debug capabilities in compact packages like the MSP430G2432IPW20R.

FAQ

What is the maximum ADC10 sampling rate supported by the MSP430G2432IPW20R?

The MSP430G2432IPW20R supports a maximum ADC10 sampling rate of 200 ksps (kilo-samples per second) when using the internal reference and configured for single-channel conversions. This rate assumes optimal clock configuration (e.g., ADC10CLK derived from SMCLK at ≥5 MHz) and excludes overhead from software-triggered start sequences or DTC auto-transfer latency.

Does the MSP430G2432IPW20R include factory-calibrated DCO frequency settings?

Yes, the MSP430G2432IPW20R includes factory-calibrated DCO frequency settings stored in information memory segment A. Calibration values for 1 MHz, 8 MHz, 12 MHz, and 16 MHz are provided at 3 V and 30°C, enabling rapid clock initialization without external crystal or trimming code - a key feature distinguishing it from base MSP430G2x02 variants.

How many ADC10 input channels does the MSP430G2432IPW20R support?

The MSP430G2432IPW20R supports eight ADC10 analog input channels (A0–A7), accessible via P1.0–P1.7 and P1.3/P1.4 pins. All eight channels are available in the 20-pin TSSOP package and can be sequenced in autoscan mode with the Data Transfer Controller (DTC) to store results directly to RAM without CPU intervention.

What debug interface does the MSP430G2432IPW20R use, and how many pins are required?

The MSP430G2432IPW20R uses the Spy-Bi-Wire (SBW) debug interface, requiring only two pins: RST/NMI/SBWTDIO (pin 10) and TEST/SBWTCK (pin 11). This two-wire interface supports full flash programming, real-time debugging, and breakpoint execution - eliminating the need for a 4-pin JTAG header and reducing PCB footprint.

Is the MSP430G2432IPW20R pin-compatible with other devices in the MSP430G2x32 family?

Yes, the MSP430G2432IPW20R is pin-compatible with all other 20-pin TSSOP variants in the MSP430G2x32 family (e.g., MSP430G2332IPW20, MSP430G2232IPW20), sharing identical pin functions and electrical characteristics. Firmware developed for one 20-pin G2x32 device can be reused across others with only minor peripheral register configuration adjustments.

MSP430G2432IPW20R Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 20-TSSOP (0.173", 4.40mm Width)

Series:: MSP430G2xx

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Verified

Core Processor:: MSP430 CPU16

Core Size:: 16-Bit

Speed:: 16MHz

Connectivity:: I2C, SPI, USI

Peripherals:: Brown-out Detect/Reset, DMA, POR, PWM, WDT

Number of I/O:: 16

Program Memory Size:: 8KB (8K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 256 x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 3.6V

Data Converters:: A/D 8x10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

MSP430G2432IPW20R FAQ

1.How can I place an order for MSP430G2432IPW20R through Aetrix?

Please submit a Request for Quotation (RFQ) for MSP430G2432IPW20R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MSP430G2432IPW20R reliable?

The price and inventory of MSP430G2432IPW20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2432IPW20R is usually 5 days.

3.What payment methods are accepted for MSP430G2432IPW20R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2432IPW20R transactions.

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4.How is shipping managed for MSP430G2432IPW20R?

MSP430G2432IPW20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MSP430G2432IPW20R order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MSP430G2432IPW20R?

For technical support, including MSP430G2432IPW20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2432IPW20R requirements.

6.How does Aetrix verify that MSP430G2432IPW20R is sourced from the original manufacturer or authorized distributors?

All MSP430G2432IPW20R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430G2432IPW20R meets industry standards.

7.What is the process for return or replacement of MSP430G2432IPW20R?

All MSP430G2432IPW20R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2432IPW20R, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MSP430G2432IPW20R part is unused and in its original packaging.

Return procedure for MSP430G2432IPW20R:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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