dd 0.4 -- 5.0 dd 0.6 max. 160 x 32 dots + yellow green led backlight led backlight 96 seg input voltage v -0.3 + 0.3 v electrical characteristics v lcd st7920 controller lsi circuit power out v db7 dd v o ss v v db0 /rst e(sclk) psb lcd driving voltage supply current output high voltage output low voltage block diagram r/w(sid) rs(cs) storage temp. operating temp. input low voltage input high voltage item ledk leda to lsi 64 seg st7921 = 0.1ma = - 0.1ma ( v -30 -20 ol v i ol v - v o i dd ss 32 com ta=25 = 5.0v dd c symbol ih v v v oh il i t stg opr i t -- -- condition test oh 0 -- lcd panel 160 x 32 dots -- -- 6.5 3.0 =5v 0.25v ) 0.7v 0.8v - 0.3 min. dd dd dd -- -- -- typ. v v 80 70 dd absolute maximum ratings LG160321-LY supply voltage(lcd) supply voltage(logic) item -0.3 -0.3 min. symbol o dd v v - v - v ss ss 7.0 5.5 max. dot pitch ( w x h ) v 0.59 x 0.60 mm led backlight specifications (ta=25 approx. 50 / 70 0.55 x 0.56 power supply for led backlight h : read h : data enable signal no connection data bus line power supply for logic no connection no connection h: parallel mode l: serial mode reset signal, active "l" forward voltage emission wave length forward current psb /rst nc leda ledk out 20 item 17 18 19 15 16 v i l p f h/l 0v +5v l -- -- symbol v f weight (reflective/led) dot size( w x h ) pin connections symbol pin connections dd r/w rs db1 db2 db4 db5 db3 db0 ss db7 db6 o v 4 ma v 9 12 14 13 10 11 7 8 5 6 e v v v unit c c 1 2 3 pin v v v h/l >l _ h/l h/l h/l h/l h/l h/l h/l h/l h/l h,h level +5v 0v -- gnd v nm ma unit 240 -- 568 -- 4.1 typ. max. 4.3 c) mm l : instruction code l : write function g 122.0 x 44.0 x 10.0/14.0 nominal dimensions 99.0 x 24.0 built in chinese font mechanical data viewing area ( w x h ) module size ( w x h x t ) v unit v item mm mm unit
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