118 liquid crystal displays 20 characters 2 lines transmissive character module (with led backlight) RCM7011T the RCM7011T is a transmissive, yellow mode stn type liquid crystal module with a built-in controller / driver lsi, and a display capacity of 20 characters 2 lines. applications personal computers, word processors, facsimiles, telephones, etc. features 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, cur- sor 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. external dimensions (units: mm)
119 liquid crystal displays RCM7011T block diagram pin assignments power supply example absolute maximum ratings (ta = 25 c)
120 liquid crystal displays RCM7011T electrical characteristics (v dd = 5.0 v 0.25 v, ta = 25 c) optical characteristics (ta = 25 c)
121 liquid crystal displays RCM7011T timing chart (1) writing (2) reading
122 liquid crystal displays RCM7011T pin functions
123 liquid crystal displays RCM7011T instructions
124 liquid crystal displays RCM7011T character code and corresponding character pattern
125 liquid crystal displays RCM7011T reset function when you turn the power supply on using the internal re- set 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 (5) select dd ram 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 follow- ing timing relationship. t off 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.
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