UPD16667 데이터 시트보기 (PDF) - NEC => Renesas Technology
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UPD16667 Datasheet PDF : 16 Pages
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POWER SUPPLY SEQUENCE OF CHIP SET
It is recommended to apply power in the following sequence.
VCC2 → VCC1 → input → VDD, VEE → V1, V2
Be sure to apply LCD drive voltages V1 and V2 last.
VCC2 Note 1 OFF
VCC1
OFF
ON
ON
4.5 V
CPU I/F Note 1
(A0 to A16, /CS,
/OE, /WE, /UBE,
D0 to D15, /DOFF)
/RESET Note 1
VDDNote 2
0 s or
more
3.3 V
0V
3.3 V
0V
0.3 VCC2
100 ns or
more
0 s or
more
ON
OFF
OFF
VEENote 2
ON
V1
OFF
V2 Note 1 OFF
0 ns
or
ON
more
ON
µPD16667
Notes 1. VCC2, CPU I/F, /RESET, and V2 are column driver power supply pins or input pins.
2. VDD and VEE do not need to be turned ON at the same time.
Caution Turn off the power to the chip set in the reverse order of the power application sequence.
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