Texas Instruments MSP430G2333IPW20

Overview

MSP430G2333IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal 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, USCI with UART/LIN/IrDA/SPI/I²C, and capacitive-touch-capable I/O. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430G2333IPW20 datasheet, MSP430G2333IPW20 pinout, MSP430G2333IPW20 application, or MSP430G2333IPW20 equivalent, key selection criteria include its 20-pin TSSOP package, 10-bit ADC integration, Spy-Bi-Wire debug interface, ultra-low active current (230 µA at 1 MHz/2.2 V), and support for LIN-compliant UART auto-baud detection in sensor interface designs.

Technical Context

The MSP430G2333IPW20 implements a 16-bit CPU with constant generators and 62.5-ns instruction cycle time, paired with a digitally controlled oscillator (DCO) calibrated to four frequencies up to 16 MHz. Its clock system supports internal VLO, external 32-kHz crystal, and digital clock sources - enabling sub-1-µs wake-up from standby mode.

Peripherals include dual 16-bit Timer_A units each with three capture/compare registers, USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and an ADC10 module with sample-and-hold, autoscan, and built-in temperature sensor - all operating under five power-saving modes optimized for extended battery life in portable instrumentation.

Key Specifications

Pinout & Package

TSSOP-20 package (6.5 mm × 4.4 mm), 0.65 mm pitch, thermally enhanced for reliable operation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2433IPW20 and MSP430G2233IPW20, the MSP430G2333IPW20 delivers optimal balance of memory (4 KB flash/256 B RAM), ultra-low power, and integrated analog capability - making it the preferred choice for mid-complexity sensor nodes requiring ADC processing without external memory expansion.

Availability

MSP430G2333IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable environmental monitors, industrial touch panels, and low-cost power meters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430G2333IPW20 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 power efficiency, reliability, and system-level integration.

The MSP430G2x33 product line was designed specifically for ultra-low-power, cost-sensitive mixed-signal applications - integrating ADC, timers, and communication interfaces into compact packages for battery-operated sensing and control systems.

FAQ

What is the maximum system clock frequency supported by the MSP430G2333IPW20?

The MSP430G2333IPW20 supports a maximum system clock (MCLK) frequency of 16 MHz when VCC ≥ 3.3 V and duty cycle is 50% ±10%. At 2.7 V, max frequency is 12 MHz; at 1.8 V, it is limited to 6 MHz. These limits are defined by the DCO's calibrated operating range and ensure stable execution across the full supply voltage window. The MSP430G2333IPW20 achieves this without external crystals for core timing, though XIN/XOUT supports optional 32-kHz crystal for low-power real-time clock functions.

Does the MSP430G2333IPW20 include hardware support for capacitive touch sensing?

Yes, the MSP430G2333IPW20 supports capacitive touch sensing on up to 24 I/O pins across Ports P1, P2, and P3. It uses the built-in comparator and timer peripherals to implement charge-transfer or relaxation oscillator methods - no external touch controller IC is required. The device includes dedicated firmware libraries and driver examples in TI's MSP430Ware to accelerate development of slider, wheel, and button interfaces. This capability is confirmed for the MSP430G2x33 family and applies directly to the MSP430G2333IPW20 in its 20-pin TSSOP configuration.

Can the MSP430G2333IPW20 perform ADC conversions without CPU intervention?

Yes, the MSP430G2333IPW20 ADC10 module supports hardware autoscan mode, allowing sequential conversion across up to 8 analog inputs (A0–A7) triggered by Timer_A or software without CPU involvement. Conversion results are automatically stored in memory, and an interrupt is generated upon completion of the scan sequence. This feature is explicitly documented in Section 5.29–5.34 of the SLAS734G datasheet and applies to the MSP430G2333IPW20 as a member of the MSP430G2x33 family.

What debug interface does the MSP430G2333IPW20 use, and how many pins are required?

The MSP430G2333IPW20 uses the Spy-Bi-Wire (SBW) interface, requiring only two pins: RST/NMI/SBWTDIO (pin 16) and TEST/SBWTCK (pin 17). This two-wire protocol provides full in-system programming, real-time debugging, and flash memory access - replacing traditional 4-pin JTAG. SBW is enabled by default and requires no external pull-ups or configuration fuses. All MSP430G2x33 devices, including the MSP430G2333IPW20, support this interface per the functional block diagram and terminal descriptions in the datasheet.

Is the MSP430G2333IPW20 pin-compatible with other devices in the MSP430G2x33 family?

Yes, the MSP430G2333IPW20 is pin-compatible with MSP430G2233IPW20, MSP430G2433IPW20, and MSP430G2533IPW20 in the 20-pin TSSOP (PW20) package. All share identical pin functions, electrical characteristics, and package dimensions. Differences are limited to flash size (2 KB / 4 KB / 8 KB / 16 KB) and RAM (256 B / 512 B), with no impact on PCB layout or signal routing. This compatibility is verified in Table 3-1 (Device Comparison) and Figure 4-1 (20-pin package pinout) of the SLAS734G datasheet.