Core and memory budget for embedded control
The MSP430A065IRBHR is a 16-bit MSP430 core MCU clocked at 8 MHz, with 8 KB of on-chip flash program memory and 256 bytes of RAM. This memory footprint suits small control loops — sensor polling, actuator sequencing, or communication bridging — where the code fits within the flash and the stack plus variables stay inside the 256-byte RAM.
On-chip peripherals and I/O
Serial connectivity includes SPI and UART/USART, covering common sensor and display interfaces. Built-in brown-out detect and power-on reset (POR) eliminate the need for an external supervisor IC in most designs. A PWM output and watchdog timer (WDT) are also integrated, reducing the external component count for motor or LED dimming applications.
Housed in a 32-VFQFN exposed-pad package (5x5 mm body), the MSP430A065IRBHR requires a thermal pad on the PCB for heat dissipation. The supplier device package is 32-VQFN (5x5 mm), identical to the case code.