Epson S5U1C60N08E, Руководство пользователя

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EPSON
S5U1C60N08E MANUAL
(EVALUATION BOARD FOR S1C60N08)
6 PRECAUTIONS
<Oscillation circuit>
• For OSC1, 32.768 kHz or 38.4 kHz crystal oscillation can be selected.
The OSC3 oscillation frequency is fixed at 500 kHz when ceramic oscillation is used. When CR
oscillation is used, the frequency can be adjusted approximately from 50 kHz to 550 kHz using the
OSC3CR control mounted on the board.
Either OSC1 or OSC3 can be selected as the system clock.
• The oscillation stabilization time for OSC3 and OSC1 is shorter than the actual IC. The time from
turning the OSC3 oscillation on to switching the system clock to OSC3 should be secured according to
the time of the actual IC.
• Use separate instructions for turning the OSC3 oscillation on and for switching the clock from OSC1
to OSC3. The same applies when turning the OSC1 oscillation off after switching the clock from OSC3
to OSC1. The S5U1C60N08E may operate if this processing is performed at the same time. Be sure to
use separate instructions according to the actual IC when creating the program.
• The oscillation start and stop times are different from those of the actual IC, because the logic level of
the S5U1C60N08E is higher than that of the actual IC.
<Undefined data memory area>
In the S5U1C60N08E, values that are read from unmapped memory areas will be undefined. How-
ever, the undefined status differs from the actual IC, therefore pay attention to the memory area when
creating programs. Refer to the "S1C60N08 Technical Manual" for the memory map.