BC2004C feature mechanical data item module dimension viewing area dot size character size standard value unit mm mm mm mm 118.0 x 43.0 77.0 x 25.2 0.55 x 0.55 2.95 x 4.75 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: a/k, or 1/2 7. option: led array, el b/l 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 1.6 4.5 4.2 280 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 gnd +5v contrast adjustment h/l register select signal h/l read/write signal h --> l enable signal h/l data bus line vss vdd vo rs r/w e db0~ 7 1 . 6 a d o t s i z s c a l e 4 1 0 8 . 0 1 1 8 . 0 7 0 . 4 7 7 . 0 9 5 . 2 1 0 . 1 6 1 5 . 2 4 2 0 . 8 3 8 . 0 4 3 . 0 4 - 3 . 5 2 9 . 0 0 . 0 5 5 4 . 7 5 5 . 3 5 1 4 - 1 . 0 1 3 . 1 ( l e d b / l ) 9 . 0 ( l e d b / l ) 4 0 . 2 0 . 5 0 . 2 ( v a ) 0 . 2 ( p 2 . 5 4 * 4 ) 0 . 2 ( v a ) 0 . 2 0 . 3 0 . 5 8 . 8 ( ( ( e l o r n o b / l ) 2 5 . 2 0 5 15 16 a k led power v+ led power v-
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