UPD78F0078GK-9ET-A Renesas Electronics America, UPD78F0078GK-9ET-A Datasheet - Page 472

• Manufacturer Part Number: UPD78F0078GK-9ET-A
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0078GK-9ET-A

• Lead Free Status / Rohs Status: Supplier Unconfirmed

470
Main System Clock Oscillator Characteristics (T
Notes 1. Indicates only oscillator characteristics. Refer to AC Characteristics for instruction execution time.
Cautions 1. When using the main system clock oscillator, wire as follows in the area enclosed by the broken
CHAPTER 25 ELECTRICAL SPECIFICATIONS (EXPANDED-SPECIFICATION PRODUCTS OF PD780076, 780078, 78F0078)
Ceramic
resonator
Crystal
resonator
External
clock
Resonator
2. Time required to stabilize oscillation after reset or STOP mode release.
2. When the main system clock is stopped and the system is operating on the subsystem clock,
lines in the 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.
wait until the oscillation stabilization time has been secured by the program before switching
back to the main system clock.
Recommended
X2
X2
X2
Rd
C2
Rd
C2
Circuit
X1 V
X1 V
C1
C1
X1
SS1
SS1
Oscillation
Oscillation
stabilization time
Oscillation
Oscillation
stabilization time
X1 input
high-/low-level width
(t
frequency (f
frequency (f
X1 input
frequency (f
XH
, t
Parameter
XL
)
User’s Manual U14260EJ4V0UD
X
X
X
)
)
)
Note 1
Note 1
Note 1
A
Note 2
Note 2
= –40 to +85 C, V
4.5 V
3.0 V
1.8 V
After V
oscillation voltage range
MIN.
4.5 V
3.0 V
1.8 V
4.0 V
1.8 V
4.5 V
3.0 V
1.8 V
4.5 V
3.0 V
1.8 V
Conditions
DD
V
V
V
V
V
V
V
V
V
V
V
V
V
V
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
reaches
5.5 V
4.5 V
3.0 V
5.5 V
4.5 V
3.0 V
5.5 V
4.0 V
5.5 V
4.5 V
3.0 V
5.5 V
4.5 V
3.0 V
DD
= 1.8 to 5.5 V)
MIN.
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
38
50
85
TYP.
12.0
8.38
12.0
8.38
12.0
8.38
MAX.
500
500
500
5.0
5.0
5.0
10
30
4
SS1
.
MHz
MHz
MHz
Unit
ms
ms
ns