參數(shù)資料
型號(hào)： HS4318ESS01H
廠商： Hitachi,Ltd.
英文描述： 4-bit HMCS400-series microcomputer
中文描述： 4位HMCS400系列微機(jī)
文件頁數(shù)： 23/66頁
文件大?。?/td> 305K
代理商： HS4318ESS01H
HD404318 Series
23
Table 4
Oscillator Circuit Examples
Circuit Configuration
Circuit Constants
External clock
operation
External
oscillator
OSC
Open
1
OSC
2
Ceramic oscillator
(OSC
1
, OSC
2
)
OSC
2
C
1
2
C
OSC
1
R
f
Ceramic
GND
Ceramic oscillator: CSA4.00MG (Murata)
R
f
= 1 M
±
20%
C
1
= C
2
= 30 pF
±
20%
Crystal oscillator
(OSC
1
, OSC
2
)
OSC
2
C
1
2
C
OSC
1
R
f
Crystal
GND
L
S
C
R
S
C
O
OSC
1
OSC
2
R
f
= 1 M
±
20%
C
1
= C
2
= 10 to 22 pF
±
20%
Crystal: Equivalent to circuit shown below
C
0
= 7 pF max.
R
S
= 100
max.
Notes: 1. Since the circuit constants change depending on the crystal or ceramic oscillator and stray
capacitance of the board, the user should consult with the crystal or ceramic oscillator
manufacturer to determine the circuit parameters.
2. Wiring among OSC
, OSC
2
, and elements should be as short as possible, and must not cross
other wiring (see figure 16).
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