UPD75P3116 NEC, UPD75P3116 Datasheet - Page 32

• Manufacturer Part Number: UPD75P3116
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

MAIN SYSTEM CLOCK OSCILLATOR CHARACTERISTICS (T
Notes 1.
Caution When using the main system clock oscillator, wiring in the area enclosed with the dotted line should
32
Crystal
resonator
Resonator
Ceramic
resonator
External
clock
2.
3.
• Wiring should be as short as possible.
• Wiring should not cross other signal lines.
• Wiring should not be placed close to a varying high current.
• The potential of the oscillator capacitor ground should be the same as V
• Do not ground to a ground pattern in which a high current flows.
• Do not fetch a signal from the oscillator.
be carried out as follows to avoid an adverse effect from wiring capacitance.
The oscillation frequency and X1 input frequency indicate characteristics of the oscillator only. For
the instruction execution time, refer to AC Characteristics.
When the power supply voltage is 1.8 V
less than the required 0.95 s. Therefore, set PCC to a value other than 0011.
The oscillation stabilization time is necessary for oscillation to stabilize after applying V
the STOP mode.
6.0 MHz, setting the processor clock control register (PCC) to 0011 results in 1 machine cycle being
Recommended constant
C1
C1
X1
X1
X1
V
V
DD
DD
X2
X2
X2
C2
C2
Oscillation
frequency (fx)
Oscillation
stabilization time
Oscillation
frequency (fx)
Oscillation
stabilization time
X1 input
frequency (fx)
X1 input
high-/low-level width
(t
XH
, t
XL
Parameter
)
Note 1
Note 1
Note 1
V
Note 3
Note 3
DD
< 2.7 V and the oscillation frequency is 4.19 MHz < fx
After V
lation voltage range MIN.
V
DD
A
Test conditions
= 4.5 to 5.5 V
= –40 to +85 C, V
DD
reaches oscil-
DD
MIN.
83.3
1.0
1.0
1.0
= 1.8 to 5.5 V)
DD
.
TYP.
DD
6.0
6.0
6.0
MAX.
PD75P3116
500
or releasing
10
30
4
Note 2
Note 2
Note 2
MHz
MHz
MHz
Unit
ms
ms
ns