BC2004B feature mechanical data item module dimension viewing area dot size character size standard value unit mm mm mm mm 146.0 x 62.5 123.5 x 43.0 0.92 x 1.1 4.84 x 9.22 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 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 2.0 4.2 4.2 540 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(+3v option) 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 15 16 17 18 power supply for b/l (+) power supply for b/l (gnd) nc/ negative voltage output no connection a k nc/vee nc 6 . 0 4 . 8 4 9 . 7 5 9 . 2 2 0 9 8 1 4 6 . 0 0 . 5 1 3 9 . 0 1 2 3 . 5 ( v a ) 1 1 8 . 8 4 ( a a a a ) p 2 . 5 4 * 1 7 = 4 3 . 1 8 4 . 7 5 6 2 . 5 0 . 5 5 5 . 0 1 3 . 0 1 5 1 0 . 7 5 3 8 . 4 7 ( a a a a ) 1 8 . 0 4 3 . 0 ( v a ) 2 . 5 1 8 - ? 1 . 0 p t h 2 . 0 6 4 - ? 2 . 5 p t h 3 . 5 1 3 . 6 m a x 9 . 0 1 3 . 5 8 1 1 . 2 5 7 3 . 0 0 1 8 1 3 4 . 0 d o t s i z e s c a l e 4 / 1 4 - ? 5 . 0 p t h 6 . 0 l e d b / l
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