Datasheet

RL78/G13 2. ELECTRICAL SPECIFICATIONS (A, D: T
A = -40 to +85°C)
Page 90 of 194R01DS0131EJ0310 Rev.3.10
Nov 15, 2013
Simplified I
2
C mode mode connection diagram (during communication at same potential)
RL78 microcontroller
SDAr
SCLr
SDA
SCL
User device
V DD
R b
Simplified I
2
C mode serial transfer timing (during communication at same potential)
SDAr
t
LOW
t HIGH
t HD:DAT
SCLr
t
SU:DAT
1/f SCL
Remarks 1. R
b[Ω]:Communication line (SDAr) pull-up resistance, Cb[F]: Communication line (SDAr, SCLr) load
capacitance
2. r: IIC number (r = 00, 01, 10, 11, 20, 21, 30, 31), g: PIM number (g = 0, 1, 4, 5, 8, 14),
h: POM number (g = 0, 1, 4, 5, 7 to 9, 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 (m
= 0, 1), n: Channel number (n = 0 to 3), mn = 00 to 03, 10 to 13)