upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 385

• Manufacturer Part Number: upd78f0103hmca1-5a4-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

Crystal/Ceramic Oscillator Characteristics
(T
Note Indicates only oscillator characteristics. Refer to AC Characteristics for instruction execution time.
Cautions 1. When using the crystal/ceramic 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
Ceramic resonator
Crystal resonator
External clock
A
= −40 to +110°C, 2.7 V ≤ V
Resonator
2. Since the CPU is started by the internal oscillation clock after reset is released, check the
themselves or apply to the resonator manufacturer for evaluation.
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.
oscillation stabilization time of the crystal/ceramic oscillation clock using the oscillation
stabilization time counter 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.
CHAPTER 24 ELECTRICAL SPECIFICATIONS ((A1) GRADE PRODUCTS)
Recommended Circuit
V
V
SS
SS
X1
C1
C1
X1
X1
DD
≤ 5.5 V, 2.7 V ≤ AV
C2
C2
X2
X2
X2
Oscillation frequency
(f
Oscillation frequency
(f
X1 input frequency
(f
X1 input high-/low-
level width (t
User’s Manual U16846EJ3V0UD
XP
XP
XP
)
)
)
Note
Note
Note
Parameter
REF
XPH
≤ V
, t
DD
XPL
, V
)
SS
4.0 V ≤ V
3.5 V ≤ V
3.3 V ≤ V
2.7 V ≤ V
4.0 V ≤ V
3.5 V ≤ V
3.3 V ≤ V
2.7 V ≤ V
4.0 V ≤ V
3.5 V ≤ V
3.3 V ≤ V
2.7 V ≤ V
4.0 V ≤ V
3.5 V ≤ V
3.3 V ≤ V
2.7 V ≤ V
= AV
Conditions
SS
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 0 V)
≤ 5.5 V
< 4.0 V
< 3.5 V
< 3.3 V
≤ 5.5 V
< 4.0 V
< 3.5 V
< 3.3 V
≤ 5.5 V
< 4.0 V
< 3.5 V
< 3.3 V
≤ 5.5 V
< 4.0 V
< 3.5 V
< 3.3 V
MIN.
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
30
46
56
96
TYP.
SS
MAX.
8.38
8.38
8.38
250
250
250
250
.
5.0
5.0
5.0
16
10
16
10
16
10
MHz
MHz
MHz
Unit
ns
385