Texas Instruments MSP430G2453IRHB32R

Overview

MSP430G2453IRHB32R from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 24 KB flash, 512 B RAM, 10-bit ADC with 8-channel autoscan, two 16-bit Timer_A modules (each with three capture/compare registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and capacitive-touch-enabled I/O. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430G2453IRHB32R datasheet, MSP430G2453IRHB32R pinout, MSP430G2453IRHB32R application, or MSP430G2453IRHB32R equivalent, key selection criteria include its QFN-32 package, integrated ADC10 with internal reference, Spy-Bi-Wire debug interface, five low-power modes (LPM0–LPM4), and verified support for LIN bus auto-baudrate detection in UART mode.

Technical Context

The MSP430G2453IRHB32R implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, digitally controlled oscillator (DCO) calibrated up to 16 MHz, and dual clock domains (ACLK, SMCLK, MCLK). Its USCI_A0 supports LIN physical layer compliance via auto-baudrate detection, while USCI_B0 provides hardware I²C master/slave and SPI operation.

It integrates an 8-channel analog comparator (Comp_A+) with programmable hysteresis and slope A/D conversion capability, alongside brownout detection, on-chip BSL for UART-based firmware updates, and 24 I/O pins with individually configurable pullup/pulldown resistors and capacitive-touch oscillator enable bits - all optimized for sub-1 µs wake-up from LPM4 standby mode.

Key Specifications

Pinout & Package

Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (recommended connection to DVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2453IRHB32R, MSP430G2553IRHB32 offers enhanced BSL security and IrDA support but same power profile, while MSP430G2413IRHB32 removes ADC10 to reduce cost and complexity for purely digital control applications.

Availability

MSP430G2453IRHB32R is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI panels, and portable medical monitors requiring stable component supply, long-term lifecycle assurance, and consistent QFN-32 packaging.

Supply support for MSP430G2453IRHB32R 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 battery-operated and energy-constrained applications, emphasizing rapid wake-up, integrated analog peripherals, and minimal external component count.

FAQ

What is the maximum operating frequency of the MSP430G2453IRHB32R?

The MSP430G2453IRHB32R supports a maximum DCO-calibrated system clock (MCLK) of 16 MHz, as confirmed by factory calibration data stored in information memory segment A. This frequency is achievable across the full 1.8 V–3.6 V supply range and enables high-speed peripheral operation while maintaining ultra-low-power efficiency in active mode.

Does the MSP430G2453IRHB32R support hardware I²C communication?

Yes, the MSP430G2453IRHB32R supports hardware I²C through USCI_B0, which implements full master and slave functionality with clock stretching, 7-bit/10-bit addressing, and automatic ACK/NACK handling. Pin P1.6/UCB0SCL and P1.7/UCB0SDA are dedicated I²C signal lines, enabling robust two-wire communication without bit-banging overhead.

How many analog input channels does the ADC10 module support on the MSP430G2453IRHB32R?

The ADC10 module on the MSP430G2453IRHB32R supports eight analog input channels (A0–A7), as explicitly documented in Table 1 and functional block diagrams. All eight channels are accessible on the RHB32 package and can be scanned automatically in sequence using the ADC10's autoscan mode, enabling efficient multi-sensor acquisition.

Is the MSP430G2453IRHB32R pin-compatible with other devices in the MSP430G2x53 family?

Yes, the MSP430G2453IRHB32R shares identical pinout and electrical characteristics with other 32-pin QFN variants in the MSP430G2x53 family, including MSP430G2553IRHB32 and MSP430G2353IRHB32. This allows direct substitution within the same PCB layout when upgrading flash size or ADC performance without redesign.

What debug interface does the MSP430G2453IRHB32R use, and how many pins are required?

The MSP430G2453IRHB32R uses the Spy-Bi-Wire (SBW) debug interface, requiring only two pins: RST/NMI/SBWTDIO (Pin 23) and TEST/SBWTCK (Pin 24). This two-wire interface supports full-speed programming, real-time debugging, and flash erase/write operations - eliminating the need for a four-pin JTAG header and reducing board space.