HD64F3039F18 Datasheet, PDF (436/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 12 Smart Card Interface
Thus the reception margin in smart card interface mode is given by the following formula.
M = (0.5 – ¹ ) – (L – 0.5) F – ^{ D – 0.5} (1 + F) × 100%
2N
N
Where M: Reception margin (%)
N: Ratio of bit rate to clock (N = 372)
D: Clock duty (D = 0 to 1.0)
L: Frame length (L = 10)
F: Absolute value of clock frequency deviation
Assuming values of F = 0 and D = 0.5 in the above formula, the reception margin formula is as
follows.
When D = 0.5 and F = 0,
M = (0.5 – 1/2 × 372) × 100%
= 49.866%
Rev.3.00 Mar. 26, 2007 Page 412 of 682
REJ09B0353-0300