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LM8M64 Fiches technique(PDF) 13 Page - Sharp Corporation |
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LM8M64 Fiches technique(HTML) 13 Page - Sharp Corporation |
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13 / 30 page ![]() SPEC No. LC9 LC9 LC9 LC98109A 8109A 8109A 8109A MODEL No. LM LM LM LM8M64 8M64 8M64 8M64 PAGE 9999 Note 4) Contrast adjust voltage “Vcon-Vss” is transformed into the LCD driving voltage “VLCD” by following circuit built in the LCD module. LCD driving voltage “VLCD” is adjusted automatically according to the change of ambient temperature range by the temperature compensation circuit. Temperature compensation circuit built in LCD module have been set obtain the optimum contrast under following driving conditions.; Take care that voltage for optimum contrast is changed under the different condition. Frame frequency : 75 Hz, Duty ratio : 1/244 (an odd number frame), Ta = 25 ℃ ※ The above is the condition of the module setting, not the electrical characteristics. DC/DC Converter VDD Control signal Voltage VLCD Vcon booster Fig.3 Voltage generator for optimum contrast Temperature Compensation Circuit Temperature sensor |
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