UPD75238GJ 查看數據表（PDF） - NEC => Renesas Technology
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UPD75238GJ Datasheet PDF : 190 Pages
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µPD75238
CHARACTERISTICS OF THE MAIN SYSTEM CLOCK OSCILLATOR (Ta = -40 to +85 °C, VDD = 2.7 to 6.0 V)
Resonator
Ceramic
resonator
Crystal
resonator
External
clock
Recommended
constant
X1 X2
C1
C2
X1 X2
C1
C2
X1
X2
µPD74HCU04
Parameter
Oscillator
frequency
(fX)Note 1
Oscillation
stability
timeNote 2
Oscillator
frequency
(fX)Note 1
Oscillation
stability
timeNote 2
X1 input
frequency
(fX)Note 1
X1 input
high/low
level width
(tXH, tXL)
Min.
2.0
2.0
2.0
81
Typ.
4.19
Max.
6.2
4
6.2
10
30
6.2
250
Unit
MHz
Conditions
VDD = oscillation
voltage range
ms
MHz
After VDD reaches
Min. of the oscilla-
tion voltage range
ms
ms
MHz
VDD = 4.5 to 6.0 V
ns
Notes 1.
2.
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 VDD is
applied or after the STOP mode is released.
CHARACTERISTICS OF THE SUBSYSTEM CLOCK OSCILLATOR (Ta = -40 to +85 °C, VDD = 2.7 to 6.0 V)
Resonator
Crystal
resonator
External
clock
Recommended
constant
XT1
XT2
R
C3
C4
XT1 XT2
Parameter
Oscillator
frequency
(fXT)Note 1
Oscillation
stability
timeNote 2
XT1 input
frequency
(fXT)Note 1
XT1 input
high/low
level width
(tXTH, tXTL)
Min.
32
Typ.
32.768
Max.
35
1.0
2
10
32
100
5
15
Unit
kHz
Conditions
s
VDD = 4.5 to 6.0 V
s
kHz
µs
Notes 1.
2.
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 VDD is
applied or after the STOP mode is released.
CAPACITANCE (Ta = 25 °C, VDD = 0 V)
Parameter
Input capacitance
Symbol
CI
Output capacitance (Other than display output) CO
I/O capacitance
CIO
Output capacitance (Display output)
CO
Min.
Typ.
Max.
15
15
15
35
Unit
pF
pF
pF
pF
Conditions
f = 1 MHz
0 V for pins other than
pins to be measured
171
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