Texas Instruments MSP430G2253IPW20

Overview

MSP430G2253IPW20 from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, two 16-bit Timer_A modules, USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and up to 16 capacitive-touch I/O pins in a 20-pin TSSOP package. It targets battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430G2253IPW20 datasheet, MSP430G2253IPW20 pinout, MSP430G2253IPW20 application, or MSP430G2253IPW20 equivalent, key selection criteria include its 1.8–3.6 V supply range, sub-1 µs wake-up from LPM4, integrated ADC10 with 8-channel analog input capability, Spy-Bi-Wire debug interface, and verified compatibility with TI's MSP430x2xx Family User's Guide (SLAU144).

Technical Context

The MSP430G2253IPW20 implements a 16-bit RISC CPU with constant generators and 16 general-purpose registers, enabling single-cycle register operations. Its clock system integrates a digitally controlled oscillator (DCO) calibrated for 1/8/12/16 MHz operation, plus ACLK from internal LF oscillator or external 32-kHz crystal.

Peripherals include two independent Timer_A modules (TA0 and TA1), each with three capture/compare registers and multiple clock sources; a comparator with eight inputs (Comp_A+); and dual USCI modules supporting asynchronous UART, synchronous SPI, and I²C protocols - all accessible via memory-mapped registers and interrupt-driven operation.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (PW20), 0.65 mm pitch, body size 6.5 × 4.4 mm, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2253IPW20, MSP430G2553IPW20 offers double RAM for enhanced data handling without altering power or timing behavior, while MSP430G2233IPW20 removes ADC10 to lower cost and power in purely digital control roles - both share identical 20-pin TSSOP footprint and core peripherals.

Availability

MSP430G2253IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, capacitive touch interfaces, and energy harvesting systems requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance.

Supply support for MSP430G2253IPW20 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 applications.

The MSP430G2xx family is designed for ultra-low-power mixed-signal applications including battery-operated sensors, portable instrumentation, and energy-constrained human-interface devices - with MSP430G2253IPW20 optimized for cost-sensitive, ADC-reliant edge nodes.

FAQ

What is the maximum ADC sampling rate supported by the MSP430G2253IPW20?

The MSP430G2253IPW20 supports a maximum ADC10 sampling rate of 200 ksps (kilo-samples per second) with internal reference and autoscan enabled. This rate is achievable when ADC10CLK is sourced from the DCO at ≥5 MHz and conversion timing parameters meet datasheet specifications. The actual sustained rate depends on software overhead, interrupt latency, and memory access speed - typical real-world throughput in polled mode is ~150 ksps.

Does the MSP430G2253IPW20 support hardware UART with auto-baudrate detection?

Yes, the MSP430G2253IPW20 supports hardware UART with auto-baudrate detection via its USCI_A0 module. This feature uses LIN-compatible break-detection logic to automatically determine incoming bit rate during initialization, eliminating the need for preconfigured baud settings. It operates within the 1.8–3.6 V supply range and is fully functional in active and LPM3 modes.

How many I/O pins on the MSP430G2253IPW20 support capacitive touch sensing?

The MSP430G2253IPW20 supports capacitive touch sensing on up to 16 I/O pins - specifically P1.0–P1.7 and P2.0–P2.7. Each pin integrates a programmable oscillator driver and comparator input (CAx), enabling self-capacitance or mutual-capacitance touch implementations without external components. The built-in Comp_A+ module provides the necessary analog front-end functionality.

What debug interface does the MSP430G2253IPW20 use, and what pins are required?

The MSP430G2253IPW20 uses the Spy-Bi-Wire (SBW) debug interface, requiring only two pins: RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This 2-wire interface supports full-speed emulation, flash programming, breakpoint setting, and real-time register inspection - all without requiring a dedicated JTAG header or additional PCB space.

Is the MSP430G2253IPW20 pin-compatible with other devices in the MSP430G2x53 family?

Yes, the MSP430G2253IPW20 is pin-compatible with other 20-pin TSSOP variants in the MSP430G2x53 family, including MSP430G2453IPW20, MSP430G2353IPW20, and MSP430G2553IPW20. All share identical PW20 pinout, electrical characteristics, and peripheral mapping - enabling direct substitution in designs where flash size, RAM, or ADC configuration differences are acceptable.