Texas Instruments MSP430G2333IPW28

Overview

MSP430G2333IPW28 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 4 KB flash, 256 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, and dual USCI peripherals supporting UART/LIN/IrDA/SPI/I²C. It operates from 1.8 V to 3.6 V and targets battery-powered sensor interface and capacitive-touch applications.

For engineers reviewing the MSP430G2333IPW28 datasheet, MSP430G2333IPW28 pinout, MSP430G2333IPW28 application, or MSP430G2333IPW28 equivalent, this page delivers verified technical context, exact pin functions for the TSSOP-28 package, real-world use cases in low-power sensing and touch control, and validated alternative parts with documented functional and application-level differences.

Technical Context

The MSP430G2333IPW28 integrates a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz, enabling sub-1 µs wake-up from LPM3/LPM4 standby modes. Its clock system supports internal VLO, external 32-kHz crystal, and digital clock sources - all configurable via BCSCTL registers.

It implements Spy-Bi-Wire debug interface (2-pin JTAG subset), on-chip emulation logic, and programmable security fuse for code protection. The 10-bit ADC supports autoscan across 8 analog inputs (A0–A7), internal reference (1.5 V/2.5 V), sample-and-hold, and DMA-triggered conversions - all confirmed for the MSP430G2x33 family and explicitly assigned to the PW28 variant.

Key Specifications

Pinout & Package

TSSOP-28 (PW28) package: 9.7 mm × 4.4 mm body, 0.65 mm pitch, surface-mount, lead-free, RoHS-compliant. Pin 1 marked by dot; pin numbering counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2433IPW28 and MSP430G2233IPW28, the MSP430G2333IPW28 provides optimal balance of memory resources and cost for mid-complexity sensor nodes - offering sufficient flash for robust ADC calibration routines and USCI protocol stacks while avoiding over-provisioning seen in the G2433 variant.

Availability

MSP430G2333IPW28 is available at Aetrix Electronics and suitable for smart sensor nodes, capacitive touch interfaces, industrial monitors, and portable medical devices requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430G2333IPW28 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 emphasis on energy efficiency, reliability, and system integration.

The MSP430G2x33 product line was designed specifically for ultra-low-power, cost-sensitive embedded applications - integrating essential analog and digital peripherals into compact packages to reduce system complexity and bill-of-materials cost.

FAQ

What is the maximum operating frequency of the MSP430G2333IPW28?

The MSP430G2333IPW28 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. This is achieved using the factory-calibrated DCO oscillator; external crystals up to 16 MHz are also supported via XIN/XOUT pins. All timing specifications in the datasheet assume these conditions.

Does the MSP430G2333IPW28 include a hardware ADC?

Yes, the MSP430G2333IPW28 includes a 10-bit successive-approximation ADC (ADC10) with 8 input channels (A0–A7), internal reference (1.5 V or 2.5 V), sample-and-hold, autoscan mode, and DMA trigger capability. This ADC is exclusive to the MSP430G2x33 family and is fully functional on the MSP430G2333IPW28 device.

Can the MSP430G2333IPW28 operate from a single 1.8-V supply?

Yes, the MSP430G2333IPW28 is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, it delivers 6 MHz maximum MCLK frequency and maintains full functionality including ADC, timers, and USCI modules. Active current consumption is characterized at 230 µA @ 1 MHz / 2.2 V, confirming robust low-voltage operation.

Is the MSP430G2333IPW28 pin-compatible with other TSSOP-28 MSP430G2x33 variants?

Yes, the MSP430G2333IPW28 shares identical pinout, electrical characteristics, and peripheral mapping with MSP430G2233IPW28, MSP430G2433IPW28, and MSP430G2533IPW28 in the TSSOP-28 package. This allows direct substitution within the same footprint when flash/RAM requirements change - confirmed by TI's Device Comparison Table (SLAS734G, Table 3-1).

What debug interface does the MSP430G2333IPW28 support?

The MSP430G2333IPW28 supports Spy-Bi-Wire (SBW), a two-wire subset of JTAG, using pins RST/NMI/SBWTDIO (Pin 24) and TEST/SBWTCK (Pin 25). This interface enables full in-circuit debugging, flash programming, and emulation without requiring a 4-pin JTAG header - reducing PCB space and connector cost.