It runs at 16 MHz from an internal oscillator, with 8 KB of Flash program memory, 1K x 8 of RAM, and 640 x 8 of EEPROM for non-volatile data storage. It comes in a 20-pin TSSOP package for space-constrained PCB layouts in under-hood or cabin electronics.
NRND — last-time-buy planning
For new designs, a pin-compatible replacement within the STM8A family should be evaluated. Read the PCN before you commit — date-code provenance matters when stock is finite.
Automotive temperature grade and package fit
The 20-TSSOP package (4.40 mm width) is a surface-mount footprint suited for automated assembly in high-volume ECUs and sensor nodes.