UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 171

• Manufacturer Part Number: UPD75238GJ
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

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