MC-78F0712-KIT Renesas Electronics America, MC-78F0712-KIT Datasheet - Page 344

• Manufacturer Part Number: MC-78F0712-KIT
• Description: KIT REF SYSTEM 78K0 UPD78F0712
• Manufacturer: Renesas Electronics America

Specifications of MC-78F0712-KIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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X1 Oscillator Characteristics
(T
Note Indicates only oscillator characteristics. Refer to AC Characteristics for instruction execution time.
Cautions 1. When using the X1 oscillator, wire as follows in the area enclosed by the broken lines in the
Remark For the resonator selection and oscillator constant, customers are requested to either evaluate the
Internal Oscillator Characteristics
(T
342
Ceramic
resonator
Crystal
resonator
External
clock
Internal low-speed oscillator
Internal high-speed oscillator
Resonator Recommended Circuit
A
A
= 40 to +85 C, 4.0 V
= 40 to +85 C, 4.0 V
2. Since the CPU is started by the internal low-speed oscillation clock after reset is released, check
oscillation themselves or apply to the resonator manufacturer for evaluation.
Resonator
above figures 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.
the oscillation stabilization time of the X1 input clock using the oscillation stabilization time
status register (OSTC). Determine the oscillation stabilization time of the OSTC register and
oscillation stabilization time select register (OSTS) after sufficiently evaluating the oscillation
stabilization time with the resonator to be used.
V
V
SS
SS
X1
C1
C1
X1
X1
C2
C2
X2
X2
X2
V
V
DD
DD
Oscillation frequency (f
Oscillation frequency (f
Oscillation frequency (f
Oscillation frequency (f
X1 input frequency (f
X1 input high-/low-level
width (t
5.5 V, 4.0 V
5.5 V, 4.0 V
CHAPTER 25 ELECTRICAL SPECIFICATIONS
XPH
Parameter
Parameter
, t
XPL
User’s Manual U17890EJ2V0UD
)
AV
AV
REF
REF
XP
RL
RH
)
XP
XP
)
)
Note
)
)
Note
Note
V
V
DD
DD
4.0 V
4.0 V
4.0 V
4.0 V
, V
, V
SS
SS
= AV
= AV
V
V
V
V
Conditions
Conditions
DD
DD
DD
DD
SS
SS
5.5 V
5.5 V
5.5 V
5.5 V
= 0 V)
= 0 V)
MIN.
120
MIN.
7.6
5.0
5.0
5.0
24
TYP.
TYP.
240
8.0
SS
MAX.
MAX.
480
8.4
100
.
20
20
20
MHz
Unit
kHz
MHz
MHz
MHz
Unit
ns