MSP430FR2532IRGET — 16-bit FRAM MCU for low-power sensing and control
Its distinguishing feature is 8.5 KB of FRAM program memory — non-volatile, fast to write, and consuming negligible power in standby — paired with 1K x 8 of SRAM. With 15 general-purpose I/O lines, connectivity for I²C, SPI, and UART, and an 8-channel 10-bit ADC, this part targets battery-powered sensor nodes, portable instrumentation, and industrial control panels where every microamp matters.
FRAM memory: no wear-leveling, no write-cycle worry
Unlike Flash-based MCUs, FRAM writes at full speed without erase cycles and tolerates orders of magnitude more write operations — effectively unlimited for most embedded applications. That means you can log data, update firmware over the air, or store calibration constants without managing wear-leveling in software. The 8.5 KB program space is tight for complex stacks but sufficient for a dedicated sensor hub or a simple control loop with a bootloader.
Package and footprint: 24-VQFN with exposed pad
The 15 I/O pins are enough for a handful of sensors, a small display, and a serial link, but not for a memory bus or parallel interface.
Lifecycle and supply posture
For dual-sourcing resilience, the MSP430 FRAM family includes pin-compatible density variants — verify the exact memory and peripheral set against your firmware image before substituting.