Datasheet
RL78/G13  2. ELECTRICAL SPECIFICATIONS (A, D: T
A = -40 to +85°C) 
Page 109 of 194R01DS0131EJ0310 Rev.3.10 
Nov 15, 2013 
2.5.2 Serial interface IICA 
(1) I
2
C standard mode 
 (TA = −40 to +85°C, 1.6 V ≤ EVDD0 = EVDD1 ≤ VDD ≤ 5.5 V, VSS = EVSS0 = EVSS1 = 0 V) 
Parameter Symbol  Conditions  HS (high-speed 
main) Mode
LS (low-speed 
main) Mode 
LV (low-voltage 
main) Mode
Unit
MIN. MAX. MIN. MAX. MIN. MAX.
SCLA0 clock frequency  fSCL 
Standard 
mode: 
f
CLK ≥ 1 MHz 
2.7 V ≤ EV
DD0 ≤ 5.5 V 0 100 0 100 0 100 kHz
1.8 V ≤ EVDD0 ≤ 5.5 V 0 100 0 100 0 100 kHz
1.7 V ≤ EVDD0 ≤ 5.5 V 0 100 0 100 0 100 kHz
1.6 V ≤ EVDD0 ≤ 5.5 V ⎯  0 100 0 100 kHz
Setup time of restart 
condition 
tSU:STA 2.7 V ≤ EVDD0 ≤ 5.5 V  4.7    4.7    4.7   
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  4.7 4.7 4.7 
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  4.7    4.7    4.7   
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯  4.7 4.7 
μ
s
Hold time
Note 1
t
HD:STA 2.7 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯ 4.0  4.0  
μ
s
Hold time when SCLA0 = 
“L” 
tLOW 2.7 V ≤ EVDD0 ≤ 5.5 V  4.7    4.7    4.7   
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  4.7 4.7 4.7 
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  4.7    4.7    4.7   
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯  4.7 4.7 
μ
s
Hold time when SCLA0 = 
“H” 
tHIGH 2.7 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯  4.0    4.0   
μ
s
Data setup time 
(reception) 
tSU:DAT 2.7 V ≤ EVDD0 ≤ 5.5 V  250   250   250    ns
1.8 V ≤ EVDD0 ≤ 5.5 V  250   250  250   ns
1.7 V ≤ EVDD0 ≤ 5.5 V  250  250 250 ns
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯ 250  250   ns
Data hold time 
(transmission)
Note 2
t
HD:DAT 2.7 V ≤ EVDD0 ≤ 5.5 V  0  3.45 0  3.45  0  3.45
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  0  3.45 0  3.45  0 3.45
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  0  3.45 0 3.45 0 3.45
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯  0 3.45  0 3.45
μ
s
Setup time of stop 
condition 
tSU:STO 2.7 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  4.0    4.0    4.0   
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯  4.0    4.0   
μ
s
Bus-free time  tBUF 2.7 V ≤ EVDD0 ≤ 5.5 V  4.7    4.7    4.7   
μ
s
1.8 V ≤ EVDD0 ≤ 5.5 V  4.7 4.7 4.7 
μ
s
1.7 V ≤ EVDD0 ≤ 5.5 V  4.7    4.7    4.7   
μ
s
1.6 V ≤ EVDD0 ≤ 5.5 V  ⎯  4.7 4.7 
μ
s
(Notes, Caution and Remark are listed on the next page.) 










