Renesas RL78 Series User Manual page 864

RL78/G1D
Simplified I
Simplified I
SCLr
SDAr
Remarks 1. R [Ω]:Communication line (SDAr) pull-up resistance, C
b
capacitance
2. r: IIC number (r = 00, 20), g: PIM number (g =1), h: POM number (h = 1)
3. f : Serial array unit operation clock frequency
MCK
(Operation clockw to be set by the CKSmn bit of serial mode register mn (SMRmn). m: Unit number (m
= 0, 1), n: Channel number (n = 0), mn = 00, 02)
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
2
C mode mode connection diagram (during communication at same potential)
SDAr
RL78 microcontroller
SCLr
2
C mode serial transfer timing (during communication at same potential)
t
CHAPTER 30 ELECTRICAL SPECIFICATIONS
V
DD
R
b
SDA
User device
SCL
1/f
SCL
LOW
[F]: Communication line (SDAr, SCLr) load
b
t
HIGH
t
HD:DAT
t
SU:DAT
843