16-bit MSP430 core with 8 KB Flash for mixed-signal control
It runs at 16 MHz and packs 8 KB of Flash program memory (8K x 8 plus 256 B) with 512 x 8 bytes of RAM, enough for moderate control loops, sensor fusion, and communication protocol handling.
40-VQFN package and supply-range flexibility
Housed in a 40-VFQFN with exposed pad (6x6 mm body, supplier package 40-VQFN), the MSP430F2234IRHAR is a surface-mount device that benefits from the thermal pad for heat sinking in continuous operation. With 32 I/O lines available, you get enough headroom for a keypad, LCD segment drive, or parallel sensor interface alongside the serial peripherals.
