512 KB Flash, 66 KB RAM — mid-density MSP430 for mixed-signal control
It runs at 20 MHz and packs 512 KB of program Flash and 66 KB of SRAM — enough to host a USB stack, a modest RTOS, and a few communication protocol buffers without hitting the ceiling. On-chip data converters include a 16-channel 12-bit ADC and a 2-channel 12-bit DAC, which covers most sensor-front-end and closed-loop control needs without an external converter.
TI lists the MSP430F5659IPZR with an Active product status. For a BOM that needs multi-year supply assurance, this is a clean line item — no end-of-life scramble to qualify a replacement.
