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item standard unit mec hanical da ta absolute maxim um r a ting electr onical c har acteristics pin no symbol function item symbol condition standard unit min t yp max input v oltage vdd supply current i dd recommended lcd vr iving v oltage f or nor mal temp v ersion module vdd-v0 led f orw ard v oltage vf led f orw ard current if el po w er supply current i el xiamen ocular GDM12864B unit item symbol standard min t yp max p o w er supply vdd-vss input v oltage vi - 0.3 -------- 5.5 -0.3 -------- vdd v bloc k dia g r am interface pin connections outline dimension f ea tur e 1. 128x64 dots graphic lcd module 2. built-in controller (ks0108b) 3. 5.0v power supply 4. stn; 1/64 duty; led bkl or el bkl 3 vss gnd 20 k 19 a 18 vee 17 rst 2 /csb 1 /csa 9 to 16 db0 to db7 7 r/w 4 vdd +5v module dimension 78.0x70.0 mm dot pitch 0.44x0.60 mm dot siz e 0.40x0.56 mm vie wing area 62.0x44.0 mm +5v 4.7 5.0 5.5 v 70 o c ------ ------ ----- 50 o c ----- 9.3 ----- 25 o c ----- 9.5 ----- v 0 o c ----- 9.8 ----- -20 o c ------ ------ ------ vdd=5v ------ 8 ----- ma 25 o c ------ 4.2 4.5 v 25 o c ------ 360 ------ ma ----- ------- ------ ma v el =1 10v ac 400hz 8 e 5 v0 6 d/i constrast adjustment h/l register select signal h/l enable signal h/l read/w rite signal h/l data bus line chip select for ic1 chip select for ic2 reset signal negative voltage output power supply for bkl(4.2v) power supply for bkl(gnd) 18 lcd panel e db0~db7 vss vdd v0 r/w d/i 8 com1~64 seg1~64 ic2 seg65~128 ic1 rst cs ic3 5 5 3 3 8 ic4 vee 8 3 k a led bkl 1 2 8 x 6 4 d o t s http://

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