850
23.7
Subclock Oscillator
(1) Connecting 32.768kHz Quartz Oscillator
To supply a clock to the subclock oscillator, connect a 32.768kHz quartz oscillator, as shown in
Figure 23-8. See Section 23.3.1, Notes on Board Design for notes on connecting crystal
oscillators.
OSC1
OSC2
C
1
C
2
C
1
=C
2
=15pF (typ)
Figure 23-8 Example Connection of 32.768kHz Crystal Oscillator
Figure 23-9 shows the equivalence circuit for a 32.768kHz oscillator.
OSC1
OSC2
C
s
L
s
R
s
C
o
C
o
=1.5pF (typ.)
R
s
=14k
Ω
(typ.)
f
w
=32.768kHz
Type No.: MX38T (Nihon Dempa Kogyo)
Figure 23-9 Equivalence Circuit for 32.768kHz Oscillator
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...