參數(shù)資料
型號(hào): μPD75P0116
廠商: NEC Corp.
英文描述: 4 Bit RISC Microcontrollers(4 位單片微控制器)
中文描述: 4位RISC微控制器(4位單片微控制器)
文件頁(yè)數(shù): 33/62頁(yè)
文件大小: 309K
代理商: ΜPD75P0116
m
PD75P0116
33
Main System Clock Oscillation Circuit Characteristics (T
A
= –40 to +85 °C, V
DD
= 1.8 to 5.5 V)
Resonator
Recommended
constants
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
RC oscillation
Oscillation frequency
(f
CC
)
Note
0.4
2.0
MHz
Note
The oscillation frequency shown above indicates characteristics of the oscillation circuit only. For the
instruction execution time and oscillation frequency characteristics, refer to
AC Characteristics
.
Caution When using the main system clock oscillation circuit, wire the portion enclosed in the dotted
line in the above figure as follows to prevent adverse influences due to wiring capacitance:
· Keep the wiring length as short as possible.
· Do not cross the wiring with other signal lines.
· Do not route the wiring in the vicinity of a line through which a high alternating current flows.
· Always keep the ground point of the capacitor of the oscillation circuit at the same potential
as V
DD
.
Do not ground to a power supply pattern through which a high current flows.
· Do not extract signals from the oscillation circuit.
CL1
CL2
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