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| Liquid crystal displays 20 characters 2 lines transflective character module with LED backlight RCM2011M The RCM2011M is a transflective TN type liquid crystal module with a yellow-green LED backlight, a built-in controller / driver LSI, and a display capacity of 20 characters 2 lines. FApplications Personal computers, word processors, facsimiles, telephones, etc. FFeatures 1) Wide viewing angle and high contrast. 2) 5 7 dot character matrix with cursor. 3) Interfaces with 4-bit or 8-bit MPUs. 4) Displays up to 226 characters and special symbols. 5) Custom character patterns are displayed with the character RAM. 6) Abundant instruction set including clear display, cursor on / off, and character blinking. 7) Compact and light weight for easy assembly to the host instrument. 8) Operable on single 5 V power supply. 9) Low power consumption. 10) Built-in LED backlight with minimal power consumption. FExternal dimensions (Units: mm) 94 Liquid crystal displays FBlock diagram RCM2011M FPin assignments FPower supply example FAbsolute maximum ratings (Ta = 25_C) 95 Liquid crystal displays FElectrical characteristics (VDD = 5.0 V 0.25 V, Ta = 25_C) RCM2011M FOptical characteristics (Ta = 25_C) Viewing direction 6 o'clock 96 Liquid crystal displays FTiming chart (1) Writing RCM2011M (2) Reading 97 Liquid crystal displays RCM2011M FPin functions 98 Liquid crystal displays FInstructions RCM2011M 99 Liquid crystal displays FCharacter code and corresponding character pattern RCM2011M 100 Liquid crystal displays FReset function When you turn the power supply on using the internal reset circuit, the module automatically returns to its initial (reset) settings. At the initial settings, the following instructions are carried out. (1) Clear display The busy flag remains in the busy condition (BF = 1) until initialization is completed. This takes 15 ms. (2) Function set DL = 1: 8-bit interface data length N=1 F = 0: 5 7 dot matrix (3) Display on / off control D = 0: Display off C = 0: Cursor off B = 0: Blinking off (4) Entry mode set 1 / D = 1: +1 (increment) S = 0: No shift Depending on the power supply's rise and fall times when it is turned on, there may be times when the initialization cannot be completed. Therefore, be aware of the following timing relationship. RCM2011M tOFF regulates the power supply breaks, or on and off times. Note) When the above power supply conditions are not met, the internal reset circuit will not operate properly. 101 |
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