Datasheet
RL78/G13 2. ELECTRICAL SPECIFICATIONS (A, D: T
A = -40 to +85°C)
Page 108 of 194R01DS0131EJ0310 Rev.3.10
Nov 15, 2013
Simplified I
2
C mode connection diagram (during communication at different potential)
SDAr
SCLr
SDA
SCL
User device
V
b
R
b
V
b
R
b
RL78
microcontroller
Simplified I
2
C mode serial transfer timing (during communication at different potential)
SDAr
t
LOW
t
HIGH
t
HD:DAT
SCLr
t
SU:DAT
1/f
SCL
Remarks 1. R
b[Ω]:Communication line (SDAr, SCLr) pull-up resistance, Cb[F]: Communication line (SDAr, SCLr)
load capacitance, V
b[V]: Communication line voltage
2. r: IIC number (r = 00, 01, 10, 20, 30, 31), g: PIM, POM number (g = 0, 1, 4, 5, 8, 14)
3. f
MCK: Serial array unit operation clock frequency
(Operation clock to be set by the CKSmn bit of serial mode register mn (SMRmn). m: Unit number,
n: Channel number (mn = 00, 01, 02, 10, 12, 13)