
82
XTAL
EXTAL
C
L1
C
L2
R
d
4–10 MHz
C
L1
= C
L2
= 18–22 pF (Recommended value)
Figure 4.2 Connection of the Crystal Oscillator (Example)
Table 4.1
Damping Resistance Values (Recommended Values)
Frequency (MHz)
Parameter
4
8
10
Rd (
Ω
)
500
200
0
Crystal Oscillator: Figure 4.3 shows an equivalent circuit of the crystal oscillator. Use a crystal
oscillator with the characteristics listed in table 4.2.
Co
EXTAL
C
L
L
Rs
XTAL
Figure 4.3 Crystal Oscillator Equivalent Circuit
Table 4.2
Crystal Oscillator Parameters
Frequency (MHz)
Parameter
4
8
10
Rs max (
Ω
)
120
80
60
Co max (pF)
7
7
7
4.2.2
External Clock Input Method
Figure 4.4 shows an example of an external clock input connection. In this case, make the external
clock high level to stop it when in standby mode. During operation, make the external input clock
frequency 4–10 MHz.
Содержание SH7041 Series
Страница 2: ......
Страница 6: ......
Страница 38: ...xvi ...
Страница 44: ...6 ...
Страница 46: ...8 ...
Страница 48: ...10 ...
Страница 82: ...44 ...
Страница 114: ...76 ...
Страница 118: ...80 ...
Страница 124: ...86 ...
Страница 170: ...132 ...
Страница 250: ...212 ...
Страница 492: ...454 ...
Страница 506: ...468 ...
Страница 604: ...566 ...
Страница 684: ...646 ...
Страница 706: ...668 ...
Страница 778: ...740 ...
Страница 780: ...742 ...
Страница 818: ...780 ...
Страница 850: ...812 ...
Страница 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...