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? ? ? nhd \ 0220wh \ mygh \ jt#? character ? liquid ? crystal? display ? module ? ? nhd \? ? newhaven ? display ? 0220 \? ? 2 ? lines ? x ? 20? characters ? wh \? ? display ? type: ? character ? m \? ? model ? y \? ? yellow/green ? led ? backlight ? g \? ? stn\? gray ? h \? ? transflective, ? 6:00 ? view,? wide ? temperature ? ( \20c~+70c) ? jt# \? ? english ? and ? japanese ? standard? font ?? ??rohs ? compliant ? ? ? ? ? ? ? ? ? ?????? newhaven ? display ? international, ? inc. ? ??????2511? technology ? drive, ? suite ? 101 ? ??????elgin ? il, ? 60124 ? ?????? ph: ? 847\844\ 8795 ? fax: ? 847\844\ 8796 ? ? www.newhavendisplay.com ? nhtech@newhavendisplay.com ?? nhsales@newhavendisplay.com ? ? ? ? ? ? ? ? ? ?
document revision history revision date description changed by 0 3/27/2007 initial release r 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 2 lines x 20 characters ? built r in controller (ks0066u or equivalent) ? +5.0v power supply ? 1/16 duty, 1/5 bias ? rohs compliant ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
12 14 13 vss1 db3 7 11 10 8 9 db0 db1 db2 4 6 5 3 2 dot size s ca le 5/1 vdd db4 db5 db6 db7 vo rs r/w e 14 6.0 0.5 3.5 139.0 18.0 p2.54*15=38.1 16- 1. 0pth 16- 1.8 pad 118 .8 4( aa) 12 3.0( va) 134.0 0.7 )aa(79.81 )av(0.32 8.33 1.5 8- 1.0 16 1 1.8 0.92 0.98 4.84 6.0 1.1 61.1 22.9 57.9 4- 3.5pth led+ led- 15 16 k a 0.63 0. 34 5.0 0.91 0.31 0.11 6.5 5.3 5.2 13 .7 max 9.1 1.6 led b/l 13.58 11.5 mpu 80 series rs r/w e db0~db7 or 68 series cont rol ler/com dr iver hd44780 20x2 lcd com1~16 d seg driver m cl1 cl2 or equi vale nt seg41 ~1 00 vdd ,vss,v1 ~v5 dna saib tiucric rewoprota r eneg .v.n optional vdd vo vss vr 10k~20k ex te rna l con trast ad justment. seg1~40 mechanical drawing newhaven display part no. NHD-0220WH-MYGH-JT#
pin description and wiring diagram pin no. symbol external connection function description 1 ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? \ ? ? ? ? ? ? ? ? \ ? \ ? ? ? ?? ? ? ? ? ? ? \ ? ? \ ? ? ? ? ? ? ? ? \ ? \ ? ? ? ?? ? ? ? ? ? ? ? ? ? ? \? ? ? ? ? ? ? ? ? ? ? ? ? ??\\\?????????? ? ?? ?\\\ ? ? ? ? ? ?
electrical characteristics item symbol condition min. typ. max. unit operating ? ? ? ? ? \ \ ?? ? ? ? ? ? \ \ ?? ? ? ? ? ? ? ? ? ? ? ? ? ? \ ? ?\ \? ? ? ? ? \ ? ? ? ? ? \ ? ? ? ? ? \\? ? ? ? ?\\ ? ?? ? ? ? ? ?\ \ \? ? ? ?? ? ? ? ?\? \ \? ? ? ? ? ? ? ? ? ? ? ? ? ? \ \? ?? ? ? ? ? ? ? ? \ \? ?? ? ? ? ? ? ? ? \ \? ?? ? ? ? ? ? ? ? \ \? ?? ? ? ?\ \? \? ? ? ? ?\ \ ? ? ? ? ?\ \ ? ? ? ? ? ? ? ? \ ? ?? ? ? ? ? ???? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
table of commands 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 00 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
timing characteristics write mode timing diagram read mode timing diagram

built r in font table
example initialization program 8-bit initialization: /**********************************************************/ void command(char i) { p1 = i; //put data on output port d_i =0; //d/i=low : send instruction r_w =0; //r/w=low : write e = 1; delay(1); //enable pulse width >= 300ns e = 0; //clock enable: falling edge } /**********************************************************/ void write(char i) { p1 = i; //put data on output port d_i =1; //d/i=low : send data r_w =0; //r/w=low : write e = 1; delay(1); //enable pulse width >= 300ns e = 0; //clock enable: falling edge } /**********************************************************/ void init() { e = 0; delay(100); //wait >15 msec after power is applied command(0x30); //command 0x30 = wake up delay(30); //must wait 5ms, busy flag not available command(0x30); //command 0x30 = wake up #2 delay(10); //must wait 160us, busy flag not available command(0x30); //command 0x30 = wake up #3 delay(10); //must wait 160us, busy flag not available command(0x38); //function set: 8-bit/2-line command(0x10); //set cursor command(0x0c); //display on; cursor on command(0x06); //entry mode set } /**********************************************************/
4-bit initialization: /**********************************************************/ void command(char i) { p1 = i; //put data on output port d_i =0; //d/i=low : send instruction r_w =0; //r/w=low : write nybble(); //send lower 4 bits i = i<<4; //shift over by 4 bits p1 = i; //put data on output port nybble(); //send upper 4 bits } /**********************************************************/ void write(char i) { p1 = i; //put data on output port d_i =1; //d/i=high : send data r_w =0; //r/w=low : write nybble(); //clock lower 4 bits i = i<<4; //shift over by 4 bits p1 = i; //put data on output port nybble(); //clock upper 4 bits } /**********************************************************/ void nybble() { e = 1; delay(1); //enable pulse width >= 300ns e = 0; //clock enable: falling edge } /**********************************************************/ void init() { p1 = 0; p3 = 0; delay(100); //wait >15 msec after power is applied p1 = 0x30; //put 0x30 on the output port delay(30); //must wait 5ms, busy flag not available nybble(); //command 0x30 = wake up delay(10); //must wait 160us, busy flag not available nybble(); //command 0x30 = wake up #2 delay(10); //must wait 160us, busy flag not available nybble(); //command 0x30 = wake up #3 delay(10); //can check busy flag now instead of delay p1= 0x20; //put 0x20 on the output port nybble(); //function set: 4-bit interface command(0x28); //function set: 4-bit/2-line command(0x10); //set cursor command(0x0f); //display on; blinking cursor command(0x06); //entry mode set } /**********************************************************/
quality information test item content of test test condition note high ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? \ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? \ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ?\ ? ? ?\ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? \ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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