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System Clock Oscillation Circuit Characteristics (T
Resonator
Recommended Circuit
Crystal
V
X1
X2
PP
C1
C2
External
X1
X2
clock
OPEN
Notes 1. Indicates only oscillator characteristics. Refer to AC Characteristics for the instruction execution
time.
2. Time required to oscillation after reset or STOP mode release. Use a resonator that can stabilize
oscillation before the oscillation stabilization time elapses.
Caution When using the system clock oscillator, wire as follows in the area enclosed by the broken 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 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.
Remark For the resonator selection and oscillator constant, customers are required to either evaluate the
oscillation themselves or apply to the resonator manufacturer for evaluation.
Flash Memory Write/Erase Characteristics (T
Parameter
Symbol
Write current (V
pin)
I
DD
DDW
Write current (V
pin)
I
PP
PPW
Erase current (V
pin)
I
DD
DDE
Erase current (V
pin)
I
PP
PPE
Unit erase time
t
er
Total erase time
t
era
Write count
V
supply voltage
V
PP
V
Note The current flowing to the ports (including the current flowing through the on-chip pull-up resistors) is not
included.
CHAPTER 16
ELECTRICAL SPECIFICATIONS
Parameter
Oscillator frequency (f
Oscillation stabilization
Note 2
time
X1 input frequency (f
X1 input high-low-level
width (t
, t
)
XH
XL
= 10 to 40° ° ° ° C, V
A
Conditions
When V
supply voltage = V
PP
(in 6.0 MHz operation mode)
When V
supply voltage = V
PP
When V
supply voltage = V
PP
(in 6.0 MHz operation mode)
When V
supply voltage = V
PP
Erase/write are regarded as 1 cycle.
In normal operation
PP0
During flash memory programming
PP1
User's Manual U12978EJ3V0UD
= − − − − 40 to +85° ° ° ° C, V
= 4.0 to 5.5 V)
A
DD
Conditions
Note 1
)
X
Note 1
)
X
= 4.0 to 5.5 V) ( µ µ µ µ PD78F9801 only)
DD
PP1
PP1
PP1
PP1
MIN.
TYP.
MAX.
6.0
6.0
6.0
10
6.0
6.0
6.0
71
83
.
SS0
MIN.
TYP.
MAX.
Note
18
7.5
Note
18
100
1
1
1
20
1
Times
0
0.2V
DD
9.7
10.0
10.3
Unit
MHz
ms
MHz
ns
Unit
mA
mA
mA
mA
s
s
V
V
211
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