Texas Instruments MSP430G2412IN20

Overview

MSP430G2412IN20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin PDIP package, featuring 8 KB Flash, 256 B RAM, 16 I/O pins (8 capacitive-touch enabled), one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and an on-chip analog comparator. It operates from 1.8 V to 3.6 V and supports five power-saving modes - used in battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430G2412IN20 datasheet, MSP430G2412IN20 pinout, MSP430G2412IN20 application, or MSP430G2412IN20 equivalent, key selection criteria include its 8 KB Flash/256 B RAM configuration, USI-based serial communication capability, absence of integrated ADC10 (distinguishing it from G2x52 variants), PDIP-20 package compatibility with legacy prototyping, and Spy-Bi-Wire debug interface support.

Technical Context

The MSP430G2412IN20 implements a 16-bit RISC CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF oscillator and external crystal support (32 kHz), enabling sub-1 µs wake-up from LPM4.

Peripheral integration includes USI supporting master/slave SPI and I²C protocols, Comparator_A+ with eight input channels and programmable hysteresis, and Timer_A3 with three capture/compare registers supporting PWM, interval timing, and input capture - all accessible via memory-mapped registers without CPU intervention during operation.

Key Specifications

Pinout & Package

Package: 20-pin Plastic Dual In-line Package (PDIP), 0.3 inch body width, through-hole mounting compatible with breadboards and legacy PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2452IN20, the MSP430G2412IN20 omits ADC10 to reduce cost and power while retaining identical timer, USI, comparator, and touch capabilities; versus MSP430G2553IPW20, it trades UART and memory for PDIP compatibility and built-in capacitive-touch I/O - making it optimal for cost-sensitive, touch-enabled, through-hole sensor designs.

Availability

MSP430G2412IN20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable instrumentation, industrial control panels, and energy harvesting systems requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2412IN20 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 wireless technologies, with decades of expertise in ultra-low-power design.

The MSP430G2xx family targets cost-sensitive, battery-operated applications demanding extended runtime, integrated peripherals, and rapid development - exemplified by the MSP430G2412IN20's balance of Flash, I/O, and power efficiency in legacy-compatible packaging.

FAQ

Does the MSP430G2412IN20 include an integrated analog-to-digital converter (ADC)?

No, the MSP430G2412IN20 does not include an ADC. It belongs to the G2x12 series, which omits the ADC10 module present in G2x52 devices like MSP430G2452IN20. Analog sensing must be performed using the on-chip Comparator_A+ or external ADCs interfaced via USI. This omission reduces cost and power consumption while retaining full timer, USI, and capacitive-touch functionality in the MSP430G2412IN20.

What debug interface does the MSP430G2412IN20 support?

The MSP430G2412IN20 supports Spy-Bi-Wire (SBW), a two-wire variant of JTAG implemented on pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This interface enables full in-system programming, flash erasure, breakpoint debugging, and real-time register inspection using TI's MSP-FET or compatible LaunchPad debuggers - all without requiring a full 4-pin JTAG header.

Can the MSP430G2412IN20 drive capacitive-touch buttons directly?

Yes, the MSP430G2412IN20 supports capacitive-touch sensing on up to 16 I/O pins using its integrated pin-oscillator circuitry. No external components are required - the firmware configures P1/P2 pins with CAPD and appropriate timer settings to measure capacitance changes. This capability is confirmed in the SLAS722G datasheet and applies identically across all G2x12 and G2x52 variants, including the MSP430G2412IN20.

What clock sources are available on the MSP430G2412IN20?

The MSP430G2412IN20 integrates multiple clock sources: a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, an internal very-low-power low-frequency oscillator (~12 kHz), and support for external 32 kHz crystals on XIN/XOUT (P2.6/P2.7). These feed the ACLK, SMCLK, and MCLK domains - enabling flexible power/performance trade-offs, such as using LF clock for RTC functions while running CPU at 16 MHz via DCO.

Is the MSP430G2412IN20 pin-compatible with other devices in the G2xx family?

Within the same package type, yes: the MSP430G2412IN20 shares identical pinout and electrical characteristics with other IN20-packaged G2xx devices (e.g., MSP430G2452IN20, MSP430G2312IN20). All share the same 20-pin PDIP mapping, I/O structure, and peripheral pin assignments - allowing drop-in replacement where functional requirements (e.g., ADC presence) align. Always verify peripheral enable bits (e.g., ADC10AE) match target functionality.