CMOS 8-BIT SINGLE CHIP MICROCOMPUTER Product Manual

CHAPTER 2: PRECAUTIONS

S5U1C8F360Z1 MANUAL EPSON 3

(ADAPTER BOARD FOR S1C8F360/8F361)

• Do not turn the OSC3 oscillation circuit on in the low power mode.

Do not switch over the operating mode (normal mode ↔ high speed mode) when the OSC3 oscilla-

tion circuit is on, as this will cause a malfunction.

The actual IC on the Adapter Board can change over the internal power voltage (set by VDC2, VDC1

and VDC0), but the S5U1C88816P cannot change the actual power voltage, because only the VDC2,

VDC1 and VDC0 values are changed.

For this reason, since the S5U1C88816P will operate, even if the stable time required for changeover is

not taken, be sure that the stable time is provided by the software.

Also, since the usable frequency of OSC1 and OSC3 depends on the internal power voltage, refer to

the technical manual for the S1C8F360 or S1C8F361 and take care so as not to operate it with an

inappropriate combination.

When turning the OSC3 oscillation circuit on after switching the operating voltage, the software must

take a voltage stabilization wait time of 5 msec.

To drive an LCD using the Adapter Board, mount the parts required for V

C1 to VC5 and CA to CE (CA

to CG in the S1C8F361) on the board or supply an external LCD power.

Note: The S1C8F360 Adapter Board supports the S1C8F361 as well. When using the board for the

S1C8F361, the AV

DD and AVSS pins on the board must be changed to the CF and CG pins,

respectively, using the jumper and mount a capacitor to the holes indicated as C1.

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Mount parts such as a switch and a capacitor at the RESET pin on the Adapter Board.