Datasheet
RL78/L12 
  CHAPTER 31 ELECTRICAL SPECIFICATIONS (G: TA = -40 to +105°C) 
R01UH0330EJ0200 Rev.2.00      930 
Dec 13, 2013 
31.4 AC Characteristics 
31.4.1 Basic operation 
(TA = −40 to +105°C, 2.4 V ≤ EVDD = VDD ≤ 5.5 V, VSS = EVSS = 0 V) 
Items Symbol  Conditions  MIN. TYP. MAX. Unit 
Instruction cycle (minimum 
instruction execution time) 
TCY Main 
system 
clock (f
MAIN) 
operation 
HS (high-speed 
main) mode 
2.7 V 
≤
 V
DD
≤
 5.5 V
0.04167  1 
μ
s 
2.4 V 
≤
 V
DD
 < 2.7 V
0.0625  1 
μ
s 
Subsystem clock (fSUB) 
operation 
2.4 V 
≤
 V
DD
≤
 5.5 V
28.5 30.5 31.3 
μ
s 
In the self 
programming 
mode 
HS (high-speed 
main) mode 
2.7 V 
≤
 V
DD
≤
 5.5 V
0.04167  1 
μ
s 
2.4 V 
≤
 V
DD
 < 2.7 V
0.0625  1 
μ
s 
External system clock frequency  fEX 2.7 V ≤ VDD ≤ 5.5 V  1.0    20.0  MHz 
2.4 V ≤ VDD < 2.7 V  1.0    16.0  MHz 
fEXS   32 35 kHz 
External system clock input high-
level width, low-level width 
tEXH, tEXL  2.7 V ≤ VDD ≤ 5.5 V  24      ns 
2.4 V ≤ VDD < 2.7 V  30      ns 
tEXHS, 
t
EXLS 
 13.7   
μ
s 
TI00 to TI07 input high-level width, 
low-level width 
tTIH, 
t
TIL 
 1/f
MCK+10  ns 
TO00 to TO07 output frequency  fTO 
HS (high-speed 
main) mode 
4.0 V ≤ EVDD ≤ 5.5 V      16  MHz 
2.7 V ≤ EVDD < 4.0 V      8  MHz 
2.4 V ≤ EVDD < 2.7 V      4  MHz 
PCLBUZ0, PCLBUZ1 output 
frequency 
fPCL HS (high-speed 
main) mode 
4.0 V ≤ EVDD ≤ 5.5 V      16  MHz 
2.7 V ≤ EVDD < 4.0 V      8  MHz 
2.4 V ≤ EVDD < 2.7 V      4  MHz 
Interrupt input high-level width, 
low-level width 
tINTH, 
t
INTL 
INTP0 2.4 V ≤ V
DD ≤ 5.5 V  1     
μ
s 
INTP1 to INTP7  2.4 V ≤ EVDD ≤ 5.5 V  1     
μ
s 
Key interrupt input low-level width tKR  KR0 to KR3  2.4 V ≤ EVDD ≤ 5.5 V  250      ns 
RESET low-level width  tRSL  10     
μ
s 
Remark f
MCK: Timer array unit operation clock frequency 
  (Operation clock to be set by the CKS0n bit of timer mode register 0n (TMR0n). 
n: Channel number (n = 0 to 7)) 










