[12]?
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Serial?Interface?
The?serial?interface?consists?of?serial?clock?SCLK,?serial?data?SDIN,?D/C,?and?/CS.?
D0?acts?as?SCLK?and?D1?acts?as?SDIN.?D2?should?be?left?open.?D3~D7,?E,?and?R/W?should?be?connected?to?GND.?
Function?
/RD?
/WR
/CS
D/C
D0
Write?Command?
0?
0
0
0
Write?Data?
0?
0
0
1
SDIN?is?shifted?into?an?8‐bit?shift?register?on?every?rising?edge?of?SCLK?in?the?order?of?D7,?D6,…D0.?
D/C?is?sampled?on?every?eighth?clock?and?the?data?byte?in?the?shift?register?is?written?to?the?GDRAM?or?
command?register?in?the?same?clock.?
Note:?Read?is?not?available?in?serial?mode.?
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I2C?Interface?
The?I2C?interface?consists?of?a?slave?address?bit?SA0,?I2C‐bus?data?signal?SDA,?and?I2C‐bus?clock?signal?SCL.?
D1?and?D2?can?be?tied?together,?and?act?as?SDA.?D0?acts?as?SCL.?Both?the?data?and?clock?signals?must?be?
connected?to?pull‐up?resistors.?/RES?is?used?to?initialize?the?device.?
Note:?SA0?bit?allows?the?device?to?have?a?slave?address?of?either?“0111100”?or?“0111101”.?
Note:?Data?and?acknowledgement?are?sent?through?the?SDA.?The?ITO?track?resistance?and?the?pull‐up?
resistance?at?SDA?becomes?a?voltage?potential?divider.?As?a?result,?it?may?not?be?possible?to?attain?a?valid?logic?
“0”?level?on?SDA?for?the?ACK?signal.?SDAIN?must?be?connected,?but?SDAOUT?may?be?disconnected?and?the?ACK?
signal?will?be?ignored?on?the?I2C?bus.?
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For?detailed?protocol?information,?see?datasheet:?http://www.newhavendisplay.com/app_notes/SSD1305.pdf?
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相关PDF资料
NHD-2.23-12832UCY3 LCD OLED GRAPHIC 128 X 32 YLW
NHD-2.4-240320SF-CTXI#-1 LCD DISP TFT 2.4" 240X320 B/L
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