mechanical data absolute maximum ratings =5v 0.25v ) input high voltage input low voltage output low voltage output high voltage supply current lcd driving voltage item supply voltage(lcd) storage temp. operating temp. input voltage supply voltage(logic) item block diagram electrical characteristics v ih -- 0.7v dd v ol - v dd v o i ss il oh v v = - 0.1ma = 0.1ma ol i = 5.0v ta=25 dd v c -- oh i 0 -- -- - 0.3 0.8v dd ss ss symbol symbol t stg v i v t opr - v o v - v dd -20 ( v -30 test condition dd min. -0.3 -0.3 -0.3 min. h/l db6 13 led backlight specifications (ta=25 20 19 18 17 16 15 14 +5v leda ledk 0v nc /rst psb db7 -- -- h/l h/l reset signal, active "l" h: parallel mode l: serial mode no connection no connection c) -- v dd v 0v ss v 1 12 11 10 9 8 7 6 5 4 3 2 -- 0.4 6.5 3.0 -- 5.0 -- -- v dd 0.6 v ma v v v h/l db0 db3 db5 db4 db2 db1 h/l h/l h/l h/l h/l rs r/w e v dd h/l h,h h/l _ >l -- +5v pin weight (reflective/led) dot size ( w x h ) dot pitch ( w x h ) viewing area ( w x h ) module size ( w x h x t ) pin connections max. typ. 80 unit c 70 + 0.3 dd v 7.0 5.5 max. v c v unit v symbol level item gnd l : instruction code power supply for logic data bus line no connection enable signal l : write h : data h : read approx. 60 / 75 function nominal dimensions 0.48 x 0.48 0.52 x 0.52 72.0 x 39.0 g mm mm mm mm unit LG128649 128 x 64 dots power supply for led backlight built in chinese font forward current emission wave length forward voltage item i f l p v symbol f unit ma nm v -- 300 568 -- 4.1 typ. max. 4.3 v o out v l to lsi o ss dd v v v out v circuit power control signals 32 com 64 seg 96 seg control signals 64 seg 32 com controller lsi lcd st7920 led b/l ledk leda /rst db0 db7 ps r/w(sid) e(sclk) rs(cs) 128 x 32 dots st7921 st7921 128 x 32 dots 32 seg 113.0 x 65.0 x 10.0/13.5
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