Texas Instruments MSP430G2203IN20

Overview

MSP430G2203IN20 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in 20-pin PDIP packaging, featuring 2 KB flash, 256 B RAM, two 16-bit Timer_A modules, USCI (UART/I²C/SPI), and 16 I/O pins with capacitive-touch capability. It operates from 1.8 V to 3.6 V and supports battery-powered sensor nodes requiring sub-1 µs wake-up and LIN-compliant UART for automotive diagnostics.

For engineers reviewing the MSP430G2203IN20 datasheet, MSP430G2203IN20 pinout, MSP430G2203IN20 application, or MSP430G2203IN20 equivalent, key selection criteria include its 2 KB flash size, absence of integrated ADC, Spy-Bi-Wire debug interface, 20-pin PDIP mechanical compatibility, and support for LIN UART auto-baud detection in low-power sensor systems.

Technical Context

The MSP430G2203IN20 implements a 16-bit CPU with constant generators and five power-saving modes, enabling operation at up to 16 MHz via calibrated DCO while maintaining active-mode current as low as 230 µA at 1 MHz/2.2 V. Its clock system integrates internal VLO, 32-kHz crystal support, and external digital clock input.

It features two independent 16-bit Timer_A peripherals-each with three capture/compare registers-and a Universal Serial Communication Interface supporting enhanced UART (LIN), IrDA, SPI, and I²C protocols. Unlike G2x33 variants, it omits the 10-bit ADC but retains full USCI and timer functionality across all package options.

Key Specifications

Pinout & Package

Package: 20-pin PDIP (N20), 24.33 mm × 6.35 mm body, through-hole mounting compatible with legacy prototyping and industrial PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2233IN20 and MSP430G2303IN20, the MSP430G2203IN20 provides identical low-power architecture, timer, and communication capabilities in the same PDIP-20 package-but trades ADC and flash capacity for lowest bill-of-materials cost in purely digital sensor or interface roles.

Availability

MSP430G2203IN20 is available at Aetrix Electronics and suitable for smart sensor node development, industrial power monitor design, capacitive touch panel production, and low-cost motor controller manufacturing requiring stable component supply and long-term obsolescence planning.

Supply support for MSP430G2203IN20 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 microcontroller innovation.

The MSP430G2xx family delivers ultra-low-power mixed-signal control for cost-sensitive, battery-operated applications including sensor interfaces, portable instrumentation, and industrial automation subsystems.

FAQ

Does MSP430G2203IN20 include an integrated analog-to-digital converter (ADC)?

No, the MSP430G2203IN20 does not include an ADC. It belongs to the G2x03 subfamily, which omits the 10-bit ADC present in G2x33 variants like MSP430G2233IN20. All ADC-related pins (e.g., A0–A7, VREF±) are repurposed as general-purpose I/O on the MSP430G2203IN20, confirmed by the device comparison table and signal descriptions in SLAS734G.

What debug interface does MSP430G2203IN20 support?

The MSP430G2203IN20 supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG, using pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This interface enables full flash programming, breakpoint debugging, and real-time register inspection without requiring a 4-pin JTAG header, reducing PCB footprint and BOM cost.

Can MSP430G2203IN20 operate from a single 1.8 V supply?

Yes, the MSP430G2203IN20 supports 1.8 V to 3.6 V operation per its recommended conditions. At 1.8 V, maximum system frequency is 6 MHz; active-mode current is characterized at 230 µA (1 MHz/2.2 V), and standby current remains 0.5 µA regardless of supply voltage within spec.

Is MSP430G2203IN20 pin-compatible with other 20-pin MSP430G2xx devices?

Yes, the MSP430G2203IN20 shares identical 20-pin PDIP (N20) pinout with MSP430G2233IN20, MSP430G2303IN20, and MSP430G2333IN20. Signal mapping-including timer, USCI, and I/O functions-is consistent across these parts, enabling hardware reuse when upgrading flash or adding ADC functionality.

What clock sources are available on MSP430G2203IN20?

The MSP430G2203IN20 supports multiple clock sources: internal digitally controlled oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz), internal very-low-power oscillator (VLO) at ~12 kHz, external 32-kHz crystal (XIN/XOUT), and external digital clock input. These feed MCLK, SMCLK, and ACLK domains independently.