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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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ST6240B Scheda tecnica(PDF) 50 Page - STMicroelectronics |
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ST6240B Scheda tecnica(HTML) 50 Page - STMicroelectronics |
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50 / 76 page  50/76 ST62T40B/E40B LCD CONTROLLER-DRIVER (Continued) Figure 29. Typical Network to connect to VLCD pins if VLCD ≤ 4.5V Typical External resistances values are in the range of 100 k Ω to 150 kΩ. External capacitances in the range of 10 to 47 nF can be added to VLCD 2/3 and VLCD 1/3 pins and to VLCD if the VLCD con- nection is highly impedant. 4.5.3 LCD RAM LCD RAM is organised as a LCD panel with a ma- trix architecture. Each bit of its content is logically mapped to a physical element of the display panel addressed by a couple (Segment;Common). If a bit is set, the relevant element of the LCD matrix is turned-on. On the contrary, an element remains turned-off as long the associated bit within the LCD RAM is kept cleared. After a reset, the LCD RAM is not initialised and contain arbitrary information. If the choosen multiplexing ratio does not use some common plates, corresponding RAM ad- dresses are free for general purpose data storage. Figure 30. Addressing Map of the LCD RAM VLCD R VLCD1/3 VSS VLCD2/3 C R: 100k Ω R R C C: 47nF VR01840 RAM Address MSB LSB E0 E1 E2 E3 E4 E5 S8 S16 S24 S32 S40 S48 S7 S15 S23 S31 S39 S47 S6 S14 S22 S30 S38 S46 S5 S13 S21 S29 S37 S45 S4 S12 S20 S28 S36 S44 NA S11 S19 S27 S35 S43 NA S10 S18 S26 S34 S42 NA S9 S17 S25 S33 S41 COM1 E6 E7 E8 E9 EA EB S8 S16 S24 S32 S40 S48 S7 S15 S23 S31 S39 S47 S6 S14 S22 S30 S38 S46 S5 S13 S21 S29 S37 S45 S4 S12 S20 S28 S36 S44 NA S11 S19 S27 S35 S43 NA S10 S18 S26 S34 S42 NA S9 S17 S25 S33 S41 COM2 EC ED EE EF F0 F1 S8 S16 S24 S32 S40 S48 S7 S15 S23 S31 S39 S47 S6 S14 S22 S30 S38 S46 S5 S13 S21 S29 S37 S45 S4 S12 S20 S28 S36 S44 NA S11 S19 S27 S35 S43 NA S10 S18 S26 S34 S42 NA S9 S17 S25 S33 S41 COM3 F2 F3 F4 F5 F6 F7 S8 S16 S24 S32 S40 S48 S7 S15 S23 S31 S39 S47 S6 S14 S22 S30 S38 S46 S5 S13 S21 S29 S37 S45 S4 S12 S20 S28 S36 S44 NA S11 S19 S27 S35 S43 NA S10 S18 S26 S34 S42 NA S9 S17 S25 S33 S41 COM4 622 |
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