R5F11Z7ADNA Datasheet, Renesas

 Minimum instruction execution time can be changed from high speed (0.03125 s: @ 32 MHz operation with high-speed on-chip oscillator) to low-speed (1 s: @ 1 MHz op.

with 2.7-V to 3.6-V operation, low pin counts (24 or 32 pins), small ROM capacity (16 Kbytes), and highly-functional an.