Hardware manual

Microcomputer Technical Q&A
139
Q&A No.: QAH8S-251
Category: Clock Pulse Generator
Subject: Crystal Resonator Capacitance Value
Question
Crystal resonator capacitance value C0 is given as 7 pF in the hardware manual. Can a larger
capacitance be used?
Answer
The C0 value given in the hardware manual is a reference value. The C0 value will depend on the
user’s system, and therefore oscillation should be confirmed in with the chip in actual use.
Applicable Products
Applicability Series Applicability Series Applicability Series
Yes Entire H8S Series H8S/2655 H8S/2350
H8S/2355 H8S/2357 H8S/2345
H8S/2245 H8S/2148 H8S/2144
H8S/2138 H8S/2134 H8S/2128
H8S/2124 — — — —