upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 426
upd78f0114hgb-8es-a
Manufacturer Part Number
upd78f0114hgb-8es-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114HGB-8ES-A.pdf
(505 pages)
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High-Speed System Clock (External RC) Oscillator Characteristics
(T
Note Indicates only oscillator characteristics. Refer to AC Characteristics for instruction execution time.
Caution When using the RC oscillator, wire as follows in the area enclosed by the broken lines in the above
External RC Oscillation Frequency Characteristics (T
Caution Set one of the above values to R and C.
Internal Oscillator Characteristics
(T
426
RC resonator
External clock
Oscillation frequency
(f
On-chip internal oscillator
A
XP
A
= 40 to +85 C, 2.7 V
= 40 to +85 C, 2.0 V
)
Resonator
Parameter
figure to avoid an adverse effect from wiring capacitance.
• Keep the wiring length as short as possible.
• Do not cross the wiring with the other signal lines.
• Do not route the wiring near a signal line through which a high fluctuating current flows.
• Always make the ground point of the oscillator capacitor the same potential as V
• Do not ground the capacitor to a ground pattern through which a high current flows.
• Do not fetch signals from the oscillator.
CHAPTER 26 ELECTRICAL SPECIFICATIONS (STANDARD PRODUCTS, (A) GRADE PRODUCTS)
Resonator
Recommended Circuit
R = 6.8 k , C = 22 pF
Target value: 3 MHz
R = 4.7 k , C = 22 pF
Target value: 4 MHz
V
SS
X1
V
V
CL1
DD
DD
C
Oscillation frequency (f
= EV
= EV
R
X2
CL2
DD
DD
Parameter
5.5 V, 2.7 V
5.5 V, 2.0 V
Oscillation frequency
(f
X1 input frequency
(f
X1 input high-/low-
level width (t
User’s Manual U16961EJ4V0UD
XP
XP
)
)
Note
Parameter
Conditions
R
)
XH
AV
AV
A
, t
= 40 to +85 C)
XL
REF
REF
)
V
V
DD
DD
4.0 V
3.5 V
3.0 V
2.5 V
4.0 V
3.5 V
3.0 V
2.5 V
2.7 V
2.7 V
, V
, V
Conditions
SS
SS
Conditions
V
V
V
V
V
V
V
V
V
V
= EV
= EV
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
< 4.0 V
< 3.5 V
< 3.0 V
< 4.0 V
< 3.5 V
< 3.0 V
SS
5.5 V
5.5 V
5.5 V
5.5 V
SS
= AV
= AV
SS
SS
MIN.
MIN.
120
= 0 V)
MIN.
= 0 V)
3.0
2.0
2.0
2.0
2.0
2.5
3.5
30
46
56
96
TYP.
TYP.
TYP.
240
3.0
4.0
SS
.
MAX.
MAX.
MAX.
480
8.38
250
250
250
250
4.0
5.0
3.5
4.7
16
10
Unit
kHz
MHz
MHz
MHz
MHz
Unit
Unit
ns
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