
171
μ
PD75238
Recommended
constant
Ceramic
resonator
Crystal
resonator
External
clock
Oscillator
frequency
(f
X
)
Note 1
Oscillation
stability
time
Note 2
Oscillator
frequency
(f
X
)
Note 1
Oscillation
stability
time
Note 2
X1 input
frequency
(f
X
)
Note 1
X1 input
high/low
level width
(t
XH
, t
XL
)
MHz
ms
MHz
ms
ms
MHz
ns
6.2
4
6.2
10
30
6.2
250
2.0
2.0
2.0
81
4.19
V
DD
= oscillation
voltage range
After V
DD
reaches
Min. of the oscilla-
tion voltage range
V
DD
= 4.5 to 6.0 V
Resonator
Parameter
Min.
Typ.
Max.
Unit
Conditions
CHARACTERISTICS OF THE MAIN SYSTEM CLOCK OSCILLATOR
(T
a
= -40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Notes 1.
The oscillator frequency and input frequency indicate only the oscillator characteristics. See the
item of AC characteristics for the instruction execution time.
The oscillation stability time means the time required for the oscillation to stabilize after V
DD
is
applied or after the STOP mode is released.
2.
CHARACTERISTICS OF THE SUBSYSTEM CLOCK OSCILLATOR
(T
a
= -40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Notes 1.
The oscillator frequency and input frequency indicate only the oscillator characteristics. See the
item of AC characteristics for the instruction execution time.
The oscillation stability time means the time required for the oscillation to stabilize after V
DD
is
applied or after the STOP mode is released.
2.
CAPACITANCE
(T
a
= 25
°
C, V
DD
= 0 V)
Recommended
constant
kHz
s
s
kHz
μ
s
32.768
1.0
32
32
5
Oscillator
frequency
(f
XT
)
Note 1
Oscillation
stability
time
Note 2
XT1 input
frequency
(f
XT
)
Note 1
XT1 input
high/low
level width
(t
XTH
, t
XTL
)
Crystal
resonator
External
clock
V
DD
= 4.5 to 6.0 V
35
2
10
100
15
Resonator
Parameter
Min.
Typ.
Max.
Unit
Conditions
Input capacitance
Output capacitance (Other than display output)
I/O capacitance
Output capacitance (Display output)
Parameter
Symbol
C
I
Min.
Typ.
Max.
15
Unit
pF
Conditions
pF
pF
pF
15
15
35
f = 1 MHz
0 V for pins other than
pins to be measured
XT1
XT2
C3
C4
R
XT1
XT2
X1
X2
C1
C2
X1
X2
C1
C2
X1
X2
μ
PD74HCU04
C
O
C
IO
C
O