16 MHz 8-bit core with 4 KB Flash — what fits in that footprint
The STM8L101F2P3: The 4 KB Flash limits firmware to compact control loops, sensor polling, or IR/PWM sequencing — not a candidate for a full protocol stack or data logging. The 1.5 KB RAM handles a few local buffers and a small call stack; any significant data buffering needs external serial RAM or careful code partitioning.
No commercial-grade variant exists for this order code; the extended range is baked into the silicon and package.
Active lifecycle — no EOL risk for new designs
The EnergyLite family has broad market traction, so secondary sourcing through independent distribution is straightforward if primary channel allocation tightens.
20-TSSOP package — layout notes
Housed in a 20-lead TSSOP with 0.173" body width and 4.40 mm nominal width. Surface-mount only.