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? ? ? nhd \ 0220dz\ nsw\ bbw ? character ? liquid ? crystal? display ? module ? ? nhd \? ? newhaven ? display ? 0220 \? ? 2 ? lines ? x ? 20? characters ? dz \? ? model ? n \? ? transmissive ?? sw \? ? side ? white ? led ? backlight? b \? ? stn\? blue ? ( \ ) ? b \? ? 6:00 ? view ? w \? ? wide? temperature ? ( \20c~+70c)? ??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 4/2/2009 initial release r 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ? ? ? ? ? ? ? ? ? 2 lines x 20 characters ? built r in controller (splc780d or equivalent) ? +5.0v power supply ? 1/16 duty, 1/5 bias ? rohs compliant ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
mechanical drawing 1 vss 2 vdd 3 v0 4 rs 5 r/w 6 e 7 db0 8 db1 9 db2 10 db3 11 db4 12 db5 13 db6 14 db7 15 led+ 16 led- pin symbol newhaven display part no. NHD-0220DZ-NSW-BBW features: 1. 2-line x 20 character display; 5 x 8 dots with cursor 2. built-in controller (splc780d or equivalent) 3. +5v power supply 4. 1/16 duty cycle; 1/5 bias 5. stn- blue; negative; transmissive 6. backlight: side white
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
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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