FRAM memory and 16 MHz core for low-power sensor control
The MSP430FR2422IRHLT combines a 16-bit MSP430 CPU16 core running at 16 MHz with 7.5KB of FRAM program memory and 2KB of SRAM.
Package and board integration — 20-VQFN with exposed pad
The 15 GPIOs route to the package periphery on a 0.5 mm pitch — a two-layer board can route all signals with careful via placement.
ROHS3 compliance covers EU and most global markets without restriction. No second-source or pin-compatible replacement is documented — the BOM carries single-source risk, but the active lifecycle means no imminent last-time-buy.
Connectivity and peripherals for mixed-signal control loops
I2C, SPI, and UART interfaces (plus IrDA and SCI) cover the common serial buses for external sensors, displays, and radio modules. The brown-out detect and watchdog timer provide supervised reset on supply dips — critical for battery-powered equipment that must recover cleanly from a dead cell.