BC2002B feature mechanical data item module dimension viewing area dot size character size standard value unit mm mm mm mm 180.0 x 40.0 149.0 x 23.0 1.12 x 1.12 6.0 x 9.66 dimension bo lymin 1. cob with metal frame 2. 5x7 dots with cursor 3. built-in controller ks0066 or equivalent 4. + 5v single power supply 5. 1/16 duty cycle 6. led b/l pins: 15/16, or a/k, or 1/2 7. option: led, el b/l 8. option: +3v single power supply 9. option: negative voltage (built-in, external) input voltage supply current lcd driving voltage led forward voltage led forward current vdd idd vdd-vo vf if vdd = +5v vdd = +5v 25 c 5.0 2.3 4.5 4.2 360 v ma v v ma typical value electronic characteristics o 25 c o 25 c o item symbol condition unit el power voltage vel vel=110vac/400hz v pin assignment pin symbol function 1 2 3 4 5 6 7~14 15 16 gnd +5v(+3v option) contrast adjustment h/l register select signal h/l read/write signal h --> l enable signal h/l data bus line power supply for b/l (+)/ power supply for b/l (gnd) vss vdd vo rs r/w e db0~7 a k
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