Texas Instruments MSP430G2433IPW28R

Overview

MSP430G2433IPW28R 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 8 channels and internal reference, two 16-bit Timer_A modules with three capture/compare registers each, USCI supporting UART/LIN/IrDA/SPI/I²C, and up to 24 capacitive-touch-enabled I/O pins in a 28-pin TSSOP package. It targets battery-powered sensor interface and power management systems.

For engineers reviewing the MSP430G2433IPW28R datasheet, MSP430G2433IPW28R pinout, MSP430G2433IPW28R application, or MSP430G2433IPW28R equivalent, key selection criteria include active-mode current (230 µA @ 1 MHz, 2.2 V), standby-mode current (0.5 µA), wake-up time (<1 µs), ADC resolution and sampling rate, USCI protocol flexibility, and TSSOP-28 package compatibility with legacy MSP430G2x33 designs.

Technical Context

The MSP430G2433IPW28R implements a 16-bit CPU with constant generators and 62.5-ns instruction cycle time, paired with a digitally controlled oscillator (DCO) calibrated at four frequencies up to 16 MHz. Its clock system supports internal VLO, external 32-kHz crystal, and digital clock sources, enabling precise timing control across five low-power modes.

Peripherals include dual 16-bit Timer_A modules (each with three CC registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and a 10-bit ADC with autoscan, sample-and-hold, and built-in voltage reference - all integrated on-die without requiring external support components for basic operation.

Key Specifications

Pinout & Package

TSSOP-28 package (9.7 mm × 4.4 mm body size), lead pitch 0.65 mm, RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2433IPW28R, the MSP430G2533IPW28R offers double flash for firmware scalability but same power/performance; the MSP430G2403IPW28R removes ADC functionality entirely, lowering cost for purely digital implementations without altering PCB layout or toolchain.

Availability

MSP430G2433IPW28R is available at Aetrix Electronics and suitable for smart sensor nodes, energy monitoring modules, industrial control panels, and low-cost touch interfaces requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MSP430G2433IPW28R 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 design and industrial-grade reliability.

The MSP430G2x33 product line delivers cost-optimized, mixed-signal microcontrollers targeting battery-powered sensor systems, portable instrumentation, and simple human-machine interfaces where power efficiency and integration outweigh raw performance.

FAQ

What is the maximum operating frequency of the MSP430G2433IPW28R?

The MSP430G2433IPW28R supports a maximum system clock (MCLK) frequency of 16 MHz at VCC = 3.3 V, 12 MHz at 2.7 V, and 6 MHz at 1.8 V, as specified in the recommended operating conditions. This frequency is achieved using the factory-calibrated DCO oscillator without requiring an external crystal, though XIN/XOUT pins support optional 32-kHz or high-frequency crystals for enhanced timing accuracy.

Does the MSP430G2433IPW28R include an analog-to-digital converter?

Yes, the MSP430G2433IPW28R integrates a 10-bit successive-approximation ADC (ADC10) with 8 input channels, 200-ksps sampling rate, internal 1.5-V reference, sample-and-hold, and hardware autoscan capability. This ADC is confirmed present in all MSP430G2x33 family members, including the MSP430G2433IPW28R, and is absent in the G2x03 variants.

Is the MSP430G2433IPW28R pin-compatible with other devices in the MSP430G2x33 family?

Yes, the MSP430G2433IPW28R in the TSSOP-28 package shares identical pinout and electrical characteristics with other 28-pin MSP430G2x33 devices such as MSP430G2533IPW28R and MSP430G2333IPW28R. All share the same P1–P3 port mapping, USCI signal assignments, and power/ground pin locations, enabling drop-in replacement within the same package variant.

What debug interface does the MSP430G2433IPW28R support?

The MSP430G2433IPW28R supports Spy-Bi-Wire (SBW), a two-wire subset of JTAG implemented on pins RST/NMI/SBWTDIO (Pin 24) and TEST/SBWTCK (Pin 25). This interface enables full in-system programming, real-time debugging, and flash memory access using TI's MSP-FET or compatible tools - no external JTAG header required.

Can the MSP430G2433IPW28R operate from a single 1.8-V supply?

Yes, the MSP430G2433IPW28R is fully functional across 1.8 V to 3.6 V, including active-mode execution at 1.8 V (with maximum 6-MHz MCLK). At this voltage, it draws 230 µA in active mode at 1 MHz and maintains full peripheral operation - making it suitable for direct connection to single-cell lithium or regulated low-voltage rails without level shifting.