Texas Instruments MSP430G2452IPW20

Overview

MSP430G2452IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 16 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, one 16-bit Timer_A with three capture/compare registers, USI supporting SPI and I²C, and an 8-channel analog comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes requiring precise analog acquisition and low-energy wireless telemetry.

For engineers reviewing the MSP430G2452IPW20 datasheet, MSP430G2452IPW20 pinout, MSP430G2452IPW20 application, or MSP430G2452IPW20 equivalent, key selection criteria include ADC10 channel count (8), TSSOP-20 package compatibility, Spy-Bi-Wire debug interface support, and verified brownout detection with <1 µs wake-up from standby mode.

Technical Context

The MSP430G2452IPW20 implements a 16-bit CPU with constant generators and seven addressing modes, executing register-to-register instructions in one CPU clock cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF and VLO oscillators, enabling sub-µs wake-up from LPM4.

Peripherals are memory-mapped and accessible via all CPU instructions. The ADC10 module includes sample-and-hold, internal reference, and DTC for autonomous data transfer; the USI supports master/slave SPI and I²C with programmable clock polarity and phase; and Timer_A3 provides PWM, capture, and interval timing with interrupt on overflow and per-register events.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 × 4.4 mm, thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2553IPW20 and MSP430FR2476TPW20, the MSP430G2452IPW20 delivers optimal balance of analog integration (ADC10 + comparator), ultra-low standby current (0.5 µA), and proven Spy-Bi-Wire debug simplicity-making it ideal for cost-sensitive, battery-constrained sensor endpoints where comparator-based event triggering is essential.

Availability

MSP430G2452IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial control panels requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430G2452IPW20 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 sensing and measurement applications, emphasizing extended battery life, integrated analog peripherals, and rapid wake-up from deep sleep states.

FAQ

What is the maximum ADC10 sampling rate supported by the MSP430G2452IPW20?

The MSP430G2452IPW20 supports a maximum ADC10 sampling rate of 200 ksps under specified conditions (VCC ≥ 2.2 V, ADC10CLK = 5 MHz). This rate is achievable with internal reference enabled and autoscan disabled; actual throughput depends on clock configuration and conversion sequence length. The MSP430G2452IPW20 datasheet specifies this value in the ADC10 electrical characteristics table.

Does the MSP430G2452IPW20 support UART communication?

No, the MSP430G2452IPW20 does not include a dedicated UART peripheral. It features a Universal Serial Interface (USI) that supports only SPI and I²C protocols. To implement UART, bit-banged software serial is required on GPIO pins, or an external level-shifter/bridge IC must be used. The MSP430G2452IPW20 USI does not provide hardware UART framing or baud-rate generation.

What debug interface does the MSP430G2452IPW20 use, and what tools are compatible?

The MSP430G2452IPW20 uses the Spy-Bi-Wire (SBW) two-wire debug interface, accessible via pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). It is fully compatible with TI's MSP-FET programmer/debugger and LaunchPad development kits (e.g., MSP-EXP430G2ET). No external level shifters or adapters are needed for standard 3.3 V SBW operation.

Can the MSP430G2452IPW20 operate from a single 1.8 V supply, and what features remain functional?

Yes, the MSP430G2452IPW20 is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, all core functions-including 16-bit CPU execution, 16 KB flash read/write, 256 B RAM, ADC10 (with reduced max sampling rate), USI (SPI/I²C), Timer_A3, and comparator_A+-remain operational. Brownout detection and DCO calibration retain accuracy down to 1.8 V per SLAS722G specifications.

How many analog input channels does the ADC10 module on the MSP430G2452IPW20 support?

The ADC10 module on the MSP430G2452IPW20 supports eight analog input channels (A0–A7), mapped to P1.0 through P1.7. All eight channels are accessible simultaneously in autoscan mode, and each can be individually selected for single-conversion sequences. This capability is exclusive to the MSP430G2x52 series and confirmed in Table 1 and Terminal Functions section of the MSP430G2452IPW20 datasheet.