Product data

HD404818 Series
38
Table 18 Examples of Oscillator Circuits
Circuit Configuration Circuit Constants
External clock operation
Oscillator
OSC
Open
1
OSC
2
Ceramic oscillator
OSC
2
C
1
2
C
OSC
1
R
f
Ceramic
GND
HD404812, HD404814, HD404816,
HD404818, HD4074818
Ceramic oscillator: CSA4.00MG
(Murata)
R
f
= 1MΩ ± 20%
C
1
= C
2
= 30 pF ± 20%
HD40L4812, HD40L4814,
HD40L4816, HD40L4818,
HD407L4818
Ceramic oscillator: CSB400P
(Murata)
CSB400P22 (Murata)
R
f
= 1 MΩ ± 20%
C
1
= C
2
= 220 pF ± 5%
CSB800J (Murata)
CSB800J122 (Murata)
R
f
= MΩ ± 20%
C
1
= C
2
= 220 pF ± 5%
Crystal oscillator
OSC
C
1
2
C
OSC
Crystal
GND
L
S
C
R
S
C
0
1
2
R
f
HD404812, HD404814, HD404816,
HD404818, HD4074818
C
1
: 10 to 22 pF ± 20%
C
2
: 10 to 22 pF ± 20%
R
f
= 1 MΩ ± 20%
Crystal: Equivalent to circut shown
at bottom left.
C
0
: 7 pF max.
R
S
: 100 Ω max