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UPD160061 Datasheet(PDF) 11 Page - NEC |
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UPD160061 Datasheet(HTML) 11 Page - NEC |
11 / 18 page Data Sheet S15843EJ3V0DS 11 µPD160061 8. RELATIONSHIP BETWEEN STB, POL AND OUTPUT WAVEFORM When the STB is high level, all outputs became Hi-Z and the gray-scale voltage is output to the LCD in synchronization with the falling edge of STB. Therefore, high drive time of the output amplifier as below is determined by the CLK number of the required SRC pin setting. Be sure to avoid using such as extremely changing the CLK frequency (ex. CLK stop). Hi-Z STB Inside bias current POL Vx (odd output) Vx (even output) Hi-Z Hi-Z V5 - V9 V0 - V4 V0 - V4 V0 - V4 V5 - V9 V5 - V9 High drive time High drive time High drive time 9. SRC AND HIGH DRIVE TIME The µPD160061 can control high drive time of the output amplifier by SRC pin logic (refer to below figure). SRC = H or open (high drive time: standard mode): High drive time (PWhp) of the output amplifier is in 64 CLK period from falling edge of the STB. SRC = L (high drive time: long-term mode): High drive time (PWhp) of the output amplifier is in 128 CLK period from falling edge of the STB. STB CLK Inside bias current PWhp We recommend a thorough simulation of the output amplifier in advance when set the SRC pin. |
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