Hitachi H8/3692 ユーザーズマニュアル
Rev. 1.0, 07/01, page 293 of 372
20.2.3
AC Characteristics
Table 20-3 AC Characteristics
V
CC
= 3.0 to 5.5 V, V
SS
= 0.0 V, T
a
= –20 to +75°C, unless otherwise incicated.
Applicable
Values
Reference
Item
Symbol
Pins
Test Condition
Min
Typ
Max
Unit
Figure
System clock
oscillation
oscillation
f
OSC
OSC
1
,
OSC
2
V
CC
= 4.0 to 5.5 V
2.0
—
16.0
MHz
*
1
frequency
2.0
10.0
System clock (ø)
t
cyc
1
—
64
t
OSC
*
2
cycle time
—
—
12.8
µs
Subclock oscillation
frequency
frequency
f
W
X
1
, X
2
—
32.768 —
kHz
Watch clock (ø
W
)
cycle time
t
W
X
1
, X
2
—
30.5
—
µs
Subclock (ø
SUB
)
cycle time
t
subcyc
2
—
8
t
W
*
2
Instruction cycle
time
time
2
—
—
t
cyc
t
subcyc
Oscillation
stabilization time
(crystal oscillator)
stabilization time
(crystal oscillator)
t
rc
OSC
1
,
OSC
2
—
—
10.0
ms
Oscillation
stabilization time
(ceramic oscillator)
stabilization time
(ceramic oscillator)
t
rc
OSC
1
,
OSC
2
—
—
5.0
ms
Oscillation
stabilization time
stabilization time
t
rcx
X
1
, X
2
—
—
2.0
s
External clock
t
CPH
OSC
1
V
CC
= 4.0 to 5.5 V
25.0
—
—
ns
Figure 20-1
high width
40.0
—
—
External clock
t
CPL
OSC
1
V
CC
= 4.0 to 5.5 V
25.0
—
—
ns
low width
40.0
—
—
External clock
t
CPr
OSC
1
V
CC
= 4.0 to 5.5 V
—
—
10.0
ns
rise time
—
—
15.0
External clock
t
CPf
OSC
1
V
CC
= 4.0 to 5.5 V
—
—
10.0
ns
fall time
—
—
15.0