Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Technical Manual page 86

7 PRECAUTIONS ON MOUNTING
(2) When connecting between the V
as short as possible.
A/D Converter
• When the A/D converter is not used, the power supply pin AV
to V .
DDE
Arrangement of Signal Lines
• In order to prevent generation of electromagnetic induction noise caused by mutual inductance, do not
arrange a large current signal line near the circuits that are sensitive to noise such as the oscillation unit and
analog input unit.
• When a signal line is parallel with a high-speed line in long distance or intersects a high-speed line, noise
may generated by mutual interference between the signals and it may cause a malfunction.
Do not arrange a high-speed signal line especially near circuits that are sensitive to noise such as the
oscillation unit and analog input unit.
Prohibited pattern
Large current signal line
A-70
and V
DD SS
Bypass capacitor connection example
V
DD
V
SS
K60 (AD0)
High-speed signal line
pins with a bypass capacitor, the pins should be connected
V
DD
V
SS
for the analog system should be connected
DDE
Large current signal line
High-speed signal line
EPSON
OSC4
OSC3
V
SS
S1C33205 PRODUCT PART