Texas Instruments MSP430G2233IPW20

Overview

MSP430G2233IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 2 KB flash, 256 B RAM, dual 16-bit Timer_A modules, 10-bit 8-channel ADC, USCI with UART/I²C/SPI, and capacitive-touch-capable I/O - deployed in battery-powered sensor nodes and portable instrumentation requiring sub-1µs wake-up and <0.1 µA off-mode current.

For engineers reviewing the MSP430G2233IPW20 datasheet, MSP430G2233IPW20 pinout, MSP430G2233IPW20 application, or MSP430G2233IPW20 equivalent, this page delivers verified electrical specs, TSSOP-20 terminal mapping, functional alternatives, and design-critical timing and power parameters for rapid low-power embedded prototyping and production selection.

Technical Context

The MSP430G2233IPW20 implements a 16-bit CPU with constant generators and 62.5-ns instruction cycle time, paired with a digitally controlled oscillator (DCO) calibrated to 1/2/4/8/12/16 MHz - enabling sub-1 µs wake-up from LPM3/LPM4 standby modes. Its clock system integrates internal VLO, 32-kHz crystal support (XT1), and external digital clock input.

Peripherals include two independent Timer_A3 modules (each with three capture/compare registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), 10-bit ADC with internal reference and autoscan, brownout detector, and Spy-Bi-Wire on-chip emulation - all operating across 1.8–3.6 V supply range with active-mode current of 230 µA at 1 MHz/2.2 V.

Key Specifications

Pinout & Package

TSSOP-20 package (6.5 mm × 4.4 mm body size), 0.65 mm pitch, 20-pin surface-mount with exposed thermal pad (not electrically connected). Pinout optimized for minimal PCB area in space-constrained sensor modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2333IPW20 and MSP430G2433IPW20, the MSP430G2233IPW20 delivers identical ultra-low-power performance and peripheral functionality at minimal memory footprint - making it the most cost-effective choice for fixed-function sensor nodes where firmware size is stable and under 2 KB.

Availability

MSP430G2233IPW20 is available at Aetrix Electronics and suitable for environmental monitoring, portable medical devices, smart building controls, and industrial asset tracking requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2233IPW20 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-level integration.

The MSP430G2xx family targets cost-sensitive, battery-operated applications demanding ultra-low power, integrated analog peripherals, and rapid development - exemplified by the MSP430G2233IPW20's focus on sensor interface and portable instrumentation.

FAQ

What is the maximum system clock frequency supported by the MSP430G2233IPW20?

The MSP430G2233IPW20 supports a maximum MCLK frequency of 16 MHz at VCC = 3.3 V, 12 MHz at 2.7 V, and 6 MHz at 1.8 V - achieved via its factory-calibrated DCO with six discrete frequencies. This allows scalable performance tuning across battery voltage ranges without external crystal for high-speed bursts.

Does the MSP430G2233IPW20 include hardware support for capacitive touch sensing?

Yes, the MSP430G2233IPW20 supports capacitive touch sensing on up to 24 I/O pins using its built-in CTSIO capability - enabling direct implementation of touch buttons, sliders, and wheels without external components or dedicated touch controllers.

Can the MSP430G2233IPW20 operate from a single 1.8 V supply?

Yes, the MSP430G2233IPW20 is fully specified for operation from 1.8 V to 3.6 V - including flash programming (minimum 2.2 V), active mode execution, and low-power modes - making it compatible with single-cell lithium primary and rechargeable batteries.

What debug interface does the MSP430G2233IPW20 use?

The MSP430G2233IPW20 uses the 2-wire Spy-Bi-Wire interface via pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17) - providing full in-system programming and real-time debugging with minimal pin overhead versus traditional 4-wire JTAG.

Is the ADC on the MSP430G2233IPW20 differential or single-ended?

The MSP430G2233IPW20's 10-bit ADC supports both single-ended and differential input modes - with eight selectable analog input channels (A0–A7), internal reference (1.5 V), and external reference options (VREF+/VREF−) for flexible signal conditioning in mixed-voltage systems.