SH7709S Datasheet, PDF (597/807 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Equation 2:
When D = 0.5 and F = 0:
M = (0.5 – 1/(2 × 16)) × 100%
= 46.875%
This is a theoretical value. A reasonable margin to allow in system designs is 20% to 30%.
Rev. 5.00, 09/03, page 553 of 760