NEC 78K0 Series User Manual page 601

AC Characteristics
(1) Basic operation
= −40 to +85°C, 1.8 V ≤ V
(T
A
Parameter
Instruction cycle (minimum
instruction execution time)
External main system clock
frequency
External main system clock input
high-level width, low-level width
External subsystem clock
frequency
External subsystem clock input
high-level width, low-level width
Note 2
TI000, TI010, TI001 , TI011
input high-level width, low-level
width
TI50, TI51 input frequency
TI50, TI51 input high-level width,
low-level width
Interrupt input high-level width,
low-level width
Key interrupt input low-level width t
RESET low-level width
µ
Notes 1. 0.38 s when operating with the 8 MHz internal oscillator.
µ
2. PD78F0534, 78F0535, 78F0536, 78F0537, and 78F0537D only.
3. Selection of f
PRM001 or PRM010, PRM011) of prescaler mode registers 00 and 01 (PRM00, PRM01). Note that
when selecting the TI000 or TI001 valid edge as the count clock, f
CHAPTER 29 ELECTRICAL SPECIFICATIONS (TARGET)
≤ 5.5 V, AV
= EV
DD DD
Symbol
T Main system clock (f
CY
operation
Subsystem clock (f
4.0 V ≤ V ≤ 5.5 V
f
EXCLK DD
2.7 V ≤ V
< 4.0 V
DD
1.8 V ≤ V
< 2.7 V
DD
t ,
EXCLKH
t
EXCLKL
f
EXCLKS
t ,
EXCLKSH
t
EXCLKSL
4.0 V ≤ V ≤ 5.5 V
Note 2
t ,
TIH0 DD
t
TIL0
2.7 V ≤ V
< 4.0 V
DD
4.0 V ≤ V ≤ 5.5 V
f
TI5 DD
2.7 V ≤ V
< 4.0 V
DD
1.8 V ≤ V
< 2.7 V
DD
4.0 V ≤ V ≤ 5.5 V
t ,
TIH5 DD
t
2.7 V ≤ V
TIL5
< 4.0 V
DD
1.8 V ≤ V
< 2.7 V
DD
t ,
INTH
t
INTL
KR
t
RSL
= f , f /4, f /256, or f
sam PRS PRS PRS
Preliminary User's Manual U17260EJ3V1UD
≤ V
, V = EV = AV
REF DD SS SS
Conditions
4.0 V ≤ V ≤ 5.5 V
)
XP DD
2.7 V ≤ V
< 4.0 V
DD
1.8 V ≤ V
< 2.7 V
DD
) operation
SUB
, f /16, f /64 is possible using bits 0 and 1 (PRM000,
PRS PRS PRS
sam
= 0 V)
SS
MIN. TYP. MAX.
0.1 32
0.2 32
Note 1
0.4 32
114 122 125
1.0 20.0
1.0 10.0
1.0 5.0
(1/f
EXCLK
× 1/2) − 1
32 32.768 35
(1/f
EXCLKS
× 1/2) − 5
2/f +
sam
Note 3
0.1
2/f +
sam
Note 3
0.2
10
10
5
50
50
100
1
250
10
= f
PRS.
Unit
µ
s
µ
s
µ
s
µ
s
MHz
MHz
MHz
ns
kHz
ns
µ
s
µ
s
MHz
MHz
MHz
ns
ns
ns
µ
s
ns
µ
s
601