Datasheet
RL78/G13  3. ELECTRICAL SPECIFICATIONS (G: T
A = -40 to +105°C) 
Page 164 of 194R01DS0131EJ0310 Rev.3.10 
Nov 15, 2013 
(8)  Communication at different potential (1.8 V, 2.5 V, 3 V) (simplified I
2
C mode) (2/2) 
 (T
A = −40 to +105°C, 2.4 V ≤ EVDD0 = EVDD1 ≤ VDD ≤ 5.5 V, VSS = EVSS0 = EVSS1 = 0 V) 
Parameter Symbol Conditions 
HS (high-speed main) 
Mode 
Unit 
MIN. MAX. 
Data setup time (reception)  tSU:DAT 
4.0 V ≤ EV
DD0 ≤ 5.5 V, 
2.7 V ≤ V
b ≤ 4.0 V, 
C
b = 50 pF, Rb = 2.7 kΩ
1/f
MCK + 340
Note 2
 ns 
2.7 V ≤ EVDD0 < 4.0 V, 
2.3 V ≤ V
b ≤ 2.7 V, 
C
b = 50 pF, Rb = 2.7 kΩ
1/f
MCK + 340
Note 2
 ns 
4.0 V ≤ EVDD0 ≤ 5.5 V, 
2.7 V ≤ V
b ≤ 4.0 V, 
C
b = 100 pF, Rb = 2.8 kΩ
1/f
MCK + 760
Note 2
 ns 
2.7 V ≤ EVDD0 < 4.0 V, 
2.3 V ≤ V
b ≤ 2.7 V, 
C
b = 100 pF, Rb = 2.7 kΩ
1/f
MCK + 760
Note 2
 ns 
2.4 V ≤ EVDD0 < 3.3 V, 
1.6 V ≤ V
b ≤ 2.0 V, 
C
b = 100 pF, Rb = 5.5 kΩ
1/f
MCK + 570
Note 2
 ns 
Data hold time (transmission)  tHD:DAT 
4.0 V ≤ EV
DD0 ≤ 5.5 V, 
2.7 V ≤ V
b ≤ 4.0 V, 
C
b = 50 pF, Rb = 2.7 kΩ
0 770 ns 
2.7 V ≤ EVDD0 < 4.0 V, 
2.3 V ≤ V
b ≤ 2.7 V, 
C
b = 50 pF, Rb = 2.7 kΩ
0 770 ns 
4.0 V ≤ EVDD0 ≤ 5.5 V, 
2.7 V ≤ V
b ≤ 4.0 V, 
C
b = 100 pF, Rb = 2.8 kΩ
0 1420 ns 
2.7 V ≤ EVDD0 < 4.0 V, 
2.3 V ≤ V
b ≤ 2.7 V, 
C
b = 100 pF, Rb = 2.7 kΩ
0 1420 ns 
2.4 V ≤ EVDD0 < 3.3 V, 
1.6 V ≤ V
b ≤ 2.0 V, 
C
b = 100 pF, Rb = 5.5 kΩ
0 1215 ns 
Notes 1.  The value must also be equal to or less than fMCK/4. 
 2. Set the f
MCK value to keep the hold time of SCLr = "L" and SCLr = "H". 
Caution  Select the TTL input buffer and the N-ch open drain output (VDD tolerance (When 20- to 52-pin 
products)/EV
DD tolerance (When 64- to 100-pin products)) mode for the SDAr pin and the N-ch 
open drain output (VDD tolerance (When 20- to 52-pin products)/EVDD tolerance (When 64- to 100-
pin products)) mode for the SCLr pin by using port input mode register g (PIMg) and port output 
mode register g (POMg). For V
IH and VIL, see the DC characteristics with TTL input buffer selected. 
(Remarks are listed on the next page.) 










