32 KB Flash — sizing the firmware budget
The MSP430F147IRTDR: The 256 B of additional info memory (part of the 32 KB block) is handy for calibration constants or bootloader flags that survive a full erase. The 1 KB RAM is tight: budget it carefully for stack, ADC buffers, and any floating-point math library.
The 1.8 V minimum supply lets the MCU run directly from a near-depleted Li-ion cell (down to about 1.8 V), while the 3.6 V maximum aligns with standard 3.3 V logic without a level shifter.
Housed in a 64-VFQFN Exposed Pad (supplier package 64-VQFN, 9x9 mm), this is a surface-mount part with a thermal pad underneath. The 48 I/O pins are multiplexed with the ADC, SPI, and UART peripherals — check the pin function table in the datasheet to avoid conflicts when assigning signals.