Texas Instruments MSP430G2333IN20

Overview

MSP430G2333IN20 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, 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 MSP430G2333IN20 datasheet, MSP430G2333IN20 pinout, MSP430G2333IN20 application, or MSP430G2333IN20 equivalent, key selection criteria include its 20-pin PDIP package, ADC-enabled analog sensing capability, Spy-Bi-Wire debug interface, and support for LIN-compliant UART auto-baud detection in low-power embedded control.

Technical Context

The MSP430G2333IN20 implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) enabling sub-1 µs wake-up from standby mode. Its clock system integrates calibrated internal frequencies up to 16 MHz, a 32-kHz crystal input, and a low-frequency VLO oscillator - all configurable via the Basic Clock Module.

Peripherals include dual 16-bit Timer_A units each with three capture/compare registers, a 10-bit ADC supporting autoscan and sample-and-hold, and dual USCI modules: USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C). All I/O pins support interrupt capability and configurable pullup/pulldown resistors.

Key Specifications

Pinout & Package

Package: 20-pin PDIP (N20), 24.33 mm × 6.35 mm body size, through-hole mounting compatible with standard DIP sockets and wave-solder processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2433IN20 and MSP430G2233IN20, the MSP430G2333IN20 provides optimal balance of memory resources and cost for mid-complexity sensor nodes requiring ADC, timers, and dual USCI without over-provisioning flash or RAM.

Availability

MSP430G2333IN20 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial temperature monitors, capacitive touch remotes, and LIN subnodes requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2333IN20 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 and embedded processing solutions for industrial, automotive, and consumer applications.

The MSP430G2x33 product line delivers ultra-low-power mixed-signal microcontrollers optimized for portable measurement, sensor interface, and capacitive touch applications where battery life and integration are critical.

FAQ

What is the maximum operating frequency of the MSP430G2333IN20?

The MSP430G2333IN20 supports a maximum system clock frequency of 16 MHz when operating at VCC = 3.3 V with 50% ±10% duty cycle. At 1.8 V, the maximum safe frequency is 6 MHz. This is determined by the DCO calibration and BCSCTL1/DCOCTL register settings, and applies to MCLK, SMCLK, and ACLK sources derived from the DCO.

Does the MSP430G2333IN20 support hardware LIN communication?

Yes, the MSP430G2333IN20 supports LIN 2.0-compliant communication via its USCI_A0 module, which includes dedicated hardware for automatic baud-rate detection (ABD) and break-field generation. This enables robust slave-node implementation on automotive subnetworks without software timing overhead.

What debug interface does the MSP430G2333IN20 use?

The MSP430G2333IN20 uses the Spy-Bi-Wire (SBW) interface - a 2-wire variant of JTAG - accessible via pins 16 (RST/NMI/SBWTDIO) and 17 (TEST/SBWTCK). This interface supports full in-system programming, real-time debugging, and flash memory erase without requiring a full 4-wire JTAG header.

Can the MSP430G2333IN20 operate from a 1.8 V supply?

Yes, the MSP430G2333IN20 is fully specified for operation from 1.8 V to 3.6 V. At 1.8 V, it delivers 230 µA active current at 1 MHz and supports all core peripherals including the ADC, timers, and USCI modules - making it ideal for single-cell Li-ion or alkaline battery systems.

How many ADC input channels does the MSP430G2333IN20 have?

The MSP430G2333IN20 includes a 10-bit ADC with 8 selectable analog input channels (A0–A7), accessible on P1.x pins. The ADC supports internal reference voltage generation, sample-and-hold, and autoscan mode - enabling sequential conversion of multiple sensors without CPU intervention.