NEC 78K0 User Manual page 418

CHAPTER 25 ELECTRICAL SPECIFICATIONS (STANDARD PRODUCTS, (A) GRADE PRODUCTS)
AC Characteristics
= −40 to +85°C, 2.7 V ≤ V
(1) Basic operation (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
418
DD
Symbol
T Main system X1 input
CY
clock clock
operation
Ring-OSC clock
Subsystem clock operation
4.0 V ≤ V ≤ 5.5 V
t ,
TIH0
DD
t
2.7 V ≤ V
TIL0
< 4.0 V
DD
4.0 V ≤ V ≤ 5.5 V
f
TI5 DD
2.7 V ≤ V
< 4.0 V
DD
4.0 V ≤ V ≤ 5.5 V
t ,
TIH5 DD
t
2.7 V ≤ V
TIL5
< 4.0 V
DD
t ,
INTH
t
INTL
4.0 V ≤ V ≤ 5.5 V
t
KR DD
2.7 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
T vs. V (X1 Input Clock Operation)
CY DD
20.0
16.0
10.0
5.0
2.0
1.0
0.4
0.238
0.2
0.1
0 1.0
Supply voltage V
User's Manual U16227EJ2V0UD
≤ 5.5 V, 2.7 V ≤ AV
= EV
DD
Conditions
4.0 V ≤ V ≤ 5.5 V
DD
3.3 V ≤ V
< 4.0 V
DD
2.7 V ≤ V
< 3.3 V
DD
Guaranteed
operation range
5.5
2.0 3.0 4.0 5.0 6.0
2.7 3.3
[V]
DD
≤ V
, V = EV = AV
REF DD SS SS
MIN. TYP. MAX.
0.2 16
0.238 16
0.4 16
4.17 8.33 16.67
114 122 125
Note
2/f + 0.1
sam
Note
2/f + 0.2
sam
10
5
50
100
1
50
100
10
= f
sam XP.
= 0 V)
SS
Unit
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
MHz
ns
ns
µ
s
ns
ns
µ
s