Texas Instruments MSP430G2202IN20

Overview

MSP430G2202IN20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin PDIP packaging, featuring 2 kB flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and support for up to 16 capacitive-touch I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430G2202IN20 datasheet, MSP430G2202IN20 pinout, MSP430G2202IN20 application, or MSP430G2202IN20 equivalent, key selection criteria include its 2 kB flash size, absence of integrated ADC10 (distinguishing it from G2x32 variants), 20-pin PDIP package compatibility, and Spy-Bi-Wire debug interface - all critical for legacy through-hole prototyping and low-cost industrial control designs.

Technical Context

The MSP430G2202IN20 implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF and VLO oscillators, enabling sub-1 µs wake-up from LPM4.

It supports five low-power modes (LPM0–LPM4), with active-mode current of 220 µA at 1 MHz/2.2 V and standby-mode current of 0.5 µA. The USI module provides hardware-level SPI and I²C protocol handling without CPU intervention, while Timer_A enables PWM generation, input capture, and interval timing via three independent compare/capture registers.

Key Specifications

Pinout & Package

Package: 20-pin Plastic Dual In-line Package (PDIP), 0.3 inch body width, through-hole mounting compatible with standard PCB prototyping and legacy industrial assemblies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2232IN20, MSP430G2202IN20 trades ADC10 capability for lower unit cost and identical power/performance in purely digital applications; compared with MSP430G2102IN20, it delivers double flash, full USI, and third capture/compare channel - making it the optimal balance for mid-complexity embedded control.

Availability

MSP430G2202IN20 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, legacy equipment upgrades, and energy harvesting controllers requiring stable component supply across long-lifecycle programs.

Supply support for MSP430G2202IN20 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 for industrial, automotive, and consumer markets.

The MSP430G2xx family was designed specifically for ultra-low-power embedded applications where battery life, small footprint, and rapid development are critical - targeting sensor systems, wearable electronics, and smart infrastructure edge nodes.

FAQ

Does MSP430G2202IN20 include an integrated analog-to-digital converter?

No, MSP430G2202IN20 does not include the ADC10 module. This distinguishes it from the MSP430G2x32 series (e.g., MSP430G2232IN20). The MSP430G2202IN20 is a digital-only variant within the G2x02 family, retaining Timer_A, USI, and capacitive-touch I/O but omitting the 10-bit ADC. External ADCs must be used if analog signal acquisition is required in designs based on MSP430G2202IN20.

What debug interface does MSP430G2202IN20 support?

MSP430G2202IN20 supports the Spy-Bi-Wire (SBW) 2-wire debug interface via pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This interface enables full in-system programming, breakpoint debugging, and memory inspection using TI's MSP-FET tool or compatible LaunchPad development kits. JTAG is not supported on this device; SBW is the sole standardized debug method for MSP430G2202IN20.

Is MSP430G2202IN20 pin-compatible with other 20-pin MSP430G2xx devices?

Yes, MSP430G2202IN20 shares identical 20-pin PDIP pinout and electrical characteristics with other IN20-packaged G2xx devices including MSP430G2232IN20, MSP430G2302IN20, and MSP430G2102IN20. All use the same terminal function mapping per Table 2 of SLAS723H, allowing direct PCB footprint reuse across the family - though peripheral availability (e.g., ADC10, Timer_A channels) varies by part number.

What clock sources are available on MSP430G2202IN20?

MSP430G2202IN20 integrates three clock sources: a digitally controlled oscillator (DCO) with factory-calibrated frequencies up to 16 MHz, an internal very-low-power low-frequency oscillator (VLO), and support for external 32-kHz crystal or digital clock input via XIN/XOUT pins. The DCO enables fast wake-up (<1 µs) and eliminates external crystal cost in many applications, while the crystal option provides high-precision timing for RTC or communication synchronization.

Can MSP430G2202IN20 drive capacitive-touch buttons without external components?

Yes, MSP430G2202IN20 supports capacitive-touch sensing on up to 16 I/O pins using its built-in pin-oscillator circuitry. Each port pin can be configured with dedicated oscillator enable bits (e.g., P1SEL.x, P2SEL.x) and software-controlled timing measurement - enabling robust touch detection with zero external components. This capability is confirmed in the "Features" section of SLAS723H and applies identically to all MSP430G2x02 devices including MSP430G2202IN20.