UPD78F1502AGK-GAK-AX Datasheet, PDF (584/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
Here is an example of setting an IIC transfer rate where MCK = fCLK = 20 MHz.
IIC Transfer Mode
(Desired Transfer Rate)
100 kHz
400 kHz
Operation Clock (MCK)
fCLK
fCLK
fCLK = 20 MHz
SDRmn[15:9]
Calculated
Transfer Rate
99
100 kHz
24
400 kHz
Error from Desired Transfer
Rate
0.0%
0.0%
R01UH0004EJ0501 Rev.5.01
568
Jun 20, 2011