upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 454
upd78f0114m6gb-8es
Manufacturer Part Number
upd78f0114m6gb-8es
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114M6GB-8ES.pdf
(534 pages)
- Current page: 454 of 534
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Ring-OSC Oscillator Characteristics
(T
Note
Subsystem Clock Oscillator Characteristics
(T
Notes 1.
Cautions 1. When using the subsystem clock oscillator, wire as follows in the area enclosed by the broken
Remark For the resonator selection and oscillator constant, users are required to either evaluate the oscillation
454
On-chip Ring-OSC oscillator
Crystal
resonator
External clock
A
A
Resonator
= −40 to +110°C
= −40 to +110°C
T
T
2.
A
A
= −40 to +110°C:
= −40 to +105°C:
2. The subsystem clock oscillator is designed as a low-amplitude circuit for reducing power
themselves or apply to the resonator manufacturer for evaluation.
Resonator
T
T
Indicates only oscillator characteristics. Refer to AC Characteristics for instruction execution time.
A
A
lines in the above 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.
consumption, and is more prone to malfunction due to noise than the X1 oscillator. Particular
care is therefore required with the wiring method when the subsystem clock is used.
= −40 to +110°C:
= −40 to +105°C:
Recommended Circuit
Note
Note 1
V
XT2
SS
C4
Rd
, 3.3 V ≤ V
CHAPTER 27 ELECTRICAL SPECIFICATIONS ((A1) GRADE PRODUCTS)
, 3.3 V ≤ V
XT2
C3
µ
µ
PD780111(A1), 780112(A1), 780113(A1), 780114(A1)
PD78F0114(A1)
XT1
XT1
Oscillation frequency (f
µ
µ
DD
PD780111(A1), 780112(A1), 780113(A1), 780114(A1)
PD78F0114(A1)
DD
= EV
= EV
Oscillation frequency
(f
XT1 input frequency
(f
XT1 input high-/low-level
width (t
DD
Parameter
XT
XT
DD
)
)
Note 2
Note 2
≤ 5.5 V, 3.3 V ≤ AV
≤ 5.5 V, 3.3 V ≤ AV
User’s Manual U16227EJ3V0UD
Parameter
XTH
, t
XTL
R
)
)
REF
REF
≤ V
≤ V
Conditions
DD
Conditions
DD
, V
, V
SS
SS
= EV
= EV
SS
SS
= AV
= AV
MIN.
MIN.
120
32
32
12
SS
SS
= 0 V)
= 0 V)
32.768
TYP.
TYP.
240
SS
MAX.
MAX.
38.5
490
35
15
.
Unit
Unit
kHz
kHz
kHz
µ
s
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