It packs 64 KB of FRAM program memory — non-volatile, fast-write, and endurance-friendly — plus 2 KB of RAM for scratchpad use.
FRAM memory — what it means for firmware and field updates
FRAM writes at bus speed with no erase cycle, so parameter logging and calibration data can be updated on every sensor read without wearing out the memory. The 64 KB program space is ample for moderate control loops and communications stacks; the 2 KB RAM handles stack and temporary variables. For designs that previously needed external EEPROM, this part absorbs that function on-chip.
Package and mounting — 38-pin TSSOP
Housed in a 38-TSSOP (0.240", 6.10 mm width), this is a surface-mount part with 0.65 mm pitch. The narrow body saves board area but calls for a decent soldering profile — rework with a hot-air station is doable, but the fine pitch means double-checking alignment before reflow.
Lifecycle and supply posture
No stock or lead-time numbers here, but the part is in the active channel.