Datasheet
RL78/G13  3. ELECTRICAL SPECIFICATIONS (G: T
A = -40 to +105°C) 
Page 160 of 194R01DS0131EJ0310 Rev.3.10 
Nov 15, 2013 
(7)  Communication at different potential (1.8 V, 2.5 V, 3 V) (CSI mode) (slave mode, SCKp... external clock 
input) 
 (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. 
SCKp cycle time
 Note 1
t
KCY2 
4.0 V 
≤
 EV
DD0
≤
 5.5 
V, 
2.7 V 
≤
 V
b
≤
 4.0 V
24 MHz < f
MCK 28/fMCK ns 
20 MHz < fMCK  ≤ 24 MHz  24/fMCK ns 
8 MHz < fMCK  ≤ 20 MHz  20/fMCK ns 
4 MHz < fMCK  ≤ 8 MHz  16/fMCK ns 
fMCK  ≤ 4 MHz  12/fMCK ns 
2.7 V 
≤
 EV
DD0
 < 4.0 
V, 
2.3 V 
≤
 V
b
≤
 2.7 V
24 MHz < f
MCK 40/fMCK ns 
20 MHz < fMCK  ≤ 24 MHz  32/fMCK ns 
16 MHz < fMCK  ≤ 20 MHz  28/fMCK ns 
8 MHz < fMCK  ≤ 16 MHz  24/fMCK ns 
4 MHz < fMCK  ≤ 8 MHz
16/fMCK ns 
fMCK  ≤ 4 MHz
12/fMCK ns 
2.4 V 
≤
 EV
DD0
 < 3.3 
V, 
1.6 V 
≤
 V
b
≤
 2.0 V
24 MHz < f
MCK 96/fMCK ns 
20 MHz < fMCK  ≤ 24 MHz  72/fMCK ns 
16 MHz < fMCK  ≤ 20 MHz  64/fMCK ns 
8 MHz < fMCK  ≤ 16 MHz  52/fMCK ns 
4 MHz < fMCK  ≤ 8 MHz
32/fMCK ns 
fMCK  ≤ 4 MHz
20/fMCK ns 
SCKp high-/low-level 
width 
tKH2, 
t
KL2 
4.0 V ≤ EV
DD0 ≤ 5.5 V, 
2.7 V ≤ V
b ≤ 4.0 V 
t
KCY2/2 − 24    ns 
2.7 V ≤ EVDD0 < 4.0 V, 
2.3 V ≤ V
b ≤ 2.7 V 
t
KCY2/2 − 36    ns 
2.4 V ≤ EVDD0 < 3.3 V, 
1.6 V ≤ V
b ≤ 2.0 V
 Note 2
t
KCY2/2 − 100    ns 
SIp setup time 
(to SCKp↑) 
Note2
t
SIK2 4.0 V ≤ EVDD0 ≤ 5.5 V, 
2.7 V ≤ V
b ≤ 4.0 V 
1/f
MCK + 40    ns 
2.7 V ≤ EVDD0 < 4.0 V, 
2.3 V ≤ V
b ≤ 2.7 V
1/f
MCK + 40    ns 
2.4 V ≤ EVDD0 < 3.3 V, 
1.6 V ≤ V
b ≤ 2.0 V 
1/f
MCK + 60
 ns 
SIp hold time 
(from SCKp↑) 
Note 3
t
KSI2  1/fMCK + 62    ns 
Delay time from SCKp↓ 
to SOp output 
Note 4
t
KSO2 4.0 V ≤ EVDD0 ≤ 5.5 V, 2.7 V ≤ Vb ≤ 4.0 V, 
C
b = 30 pF, Rb = 1.4 kΩ 
 2/f
MCK + 240  ns 
2.7 V ≤ EVDD0 < 4.0 V, 2.3 V ≤ Vb ≤ 2.7 V, 
C
b = 30 pF, Rb = 2.7 kΩ 
 2/f
MCK + 428  ns 
2.4 V ≤ EVDD0 < 3.3 V, 1.6 V ≤ Vb ≤ 2.0 V 
C
b = 30 pF, Rb = 5.5 kΩ 
 2/f
MCK + 1146  ns 
(Notes, Caution and Remarks are listed on the next page.) 










