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LH168P Datasheet(PDF) 4 Page - Sharp Corporation |
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LH168P Datasheet(HTML) 4 Page - Sharp Corporation |
4 / 15 page FUNCTIONAL OPERATIONS OF EACH BLOCK BLOCK FUNCTION Shift Register Used as a bi-directional shift register which performs the shifting operation by CK and selects bits for data sampling. Data Latch Used to temporary latch the input data which is sent to the sampling memory. Sampling Memory Used to sample the data to be entered by time sharing. Hold Memory Used for latch processing of data in the sampling memory by LS input. Level Shifter Used to shift the data in the hold memory to the power supply level of the analog circuit unit and sends the shifted data to DA converter. Reference Voltage Generation Circuit Used to generate a gamma-corrected 64-level voltage by the resistor dividing circuit. DA Converter Used to generate an analog signal according to the display data and sends the signal to the output circuit. Output Circuit Used as a voltage follower, configured with an operational amplifier and an output buffer, which outputs analog signals of 64 gray scales to LCD drive output pin. INPUT/OUTPUT CIRCUITS I VCC GND To Internal Circuit Fig. 1 Input Circuit (1) ¿Applicable pins¡ CK, LS, LBR, XI0-XI5, YI0-YI5, ZI0-ZI5 I VCC VCC GND To Internal Circuit Fig. 2 Input Circuit (2) ¿Applicable pin¡ MODE LH168P 4 |
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