CEB-V850ES/FJ3·SJ3 Evaluation Board HardwareUser’s Manual
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3.3.10 CLOCK
(1) Main Clock
The crystal oscillator is connected to X1 and X2 terminals of CPU.
Oscillation frequency is 6MHz in FJ3, and it is 4MHz in SJ3.
Since the socket is mounted, a crystal oscillator is exchangeable if needed. Please purchase a HC49 U/S
type crystal oscillator.
Since it operates by the CPU internal clock by the default, in case an external clock is used, an inside
register setup of CPU is changed.
Please refer to an applicable CPU user’s manual for details.
(2)Sub Clock
The crystal oscillator is connected to XT1 and XT2 terminals of CPU. Oscillation frequency is 32.768kHz.
Since it is soldered directly, crystal is unexchangeable.
