Renesas RL78 Series User Manual page 860

RL78/G1D
Caution Select the normal input buffer for the SIp pin and SCKp pin and the normal output mode for the SOp pin
by using port input mode register g (PIMg) and port output mode register g (POMg).
Remarks 1. p: CSI number (p = 00, 20), m: Unit number (m = 0, 1),
n: Channel number (n = 0), g: PIM and POM numbers (g = 1)
2. f : Serial array unit operation clock frequency
MCK
(Operation clock to be set by the CKSmn bit of serial mode register mn (SMRmn).
m: Unit number, n: Channel number (mn = 00, 10))
CSI mode connection diagram (during communication at same potential)
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
SCKp
RL78
SIp
microcontroller
SOp
CHAPTER 30 ELECTRICAL SPECIFICATIONS
SCK
SO
User device
SI
839