NEC 78K0 User Manual page 451

CHAPTER 27 ELECTRICAL SPECIFICATIONS ((A2) GRADE PRODUCTS)
AC Characteristics
(1) Basic operation
= −40 to +125°C, 3.3 V ≤ V
(T
A
Parameter
Instruction cycle (minimum
instruction execution time)
TI000, TI010 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 return input low-level width
RESET low-level width
Note Selection of f = f
sam
register 00 (PRM00). Note that when selecting the TI000 valid edge as the count clock, f
≤ 5.5 V, 3.3 V ≤ AV
= EV
DD DD
Symbol
T Main X1 input
CY
system clock
clock
Ring-OSC clock
operation
Subsystem clock operation
4.0 V ≤ V ≤ 5.5 V
t ,
TIH0 DD
t
TIL0
3.3 V ≤ V
< 4.0 V
DD
4.0 V ≤ V ≤ 5.5 V
f
TI5 DD
3.3 V ≤ V
< 4.0 V
DD
4.0 V ≤ V ≤ 5.5 V
t ,
TIH5 DD
t
3.3 V ≤ V
TIL5
< 4.0 V
DD
t ,
INTH
t
INTL
4.0 V ≤ V ≤ 5.5 V
t
KR DD
3.3 V ≤ V
< 4.0 V
DD
t
RSL
, f /4, or f /256 is possible using bits 0 and 1 (PRM000, PRM001) of prescaler mode
XP XP XP
User's Manual U16227EJ2V0UD
≤ V
, V = EV
REF DD SS SS
Conditions
4.0 V ≤ V ≤ 5.5 V
DD
3.3 V ≤ V
< 4.0 V
DD
= AV = 0 V)
SS
MIN. TYP. MAX. Unit
µ
0.238 16 s
µ
0.4 16 s
µ
4.04 8.33 16.67 s
µ
114 122 125 s
µ
2/f + s
sam
Note
0.1
µ
2/f + s
sam
Note
0.2
8.38 MHz
5 MHz
59.6 ns
100 ns
µ
1 s
59.6 ns
100 ns
µ
10 s
= f
sam XP.
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