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electronic:lcd:ericsson1 [2026/09/03 11:08] – tonyelectronic:lcd:ericsson1 [2026/09/05 05:09] (current) – external edit 127.0.0.1
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 +<html><p style="text-align:right;">Published  3 Sep 2026</p></html>
 +<html><p style="text-align:center;"><b><font size="6">Ericsson Displays</font></b></p></html>
 +\\
 +
 +===== Overview =====
 +
 +^  Ericsson cellphone LCDs  |||||||||
 +^Phone^Resolution^Chip^LCD^Part num^Pinout^Interface^I2C addr^Voltage|
 +^t20|101x33 mono|[[ericsson1#pcf8558|PCF8558]]|** **|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x70h, 0x71h|2.7V|
 +^t28|101x33 mono|[[ericsson1#pcf8558|PCF8558]]|** **|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x70h, 0x71h|2.7V|
 +^t29|101x33 mono|[[ericsson1#pcf8558|PCF8558]]|** **|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x70h, 0x71h|2.7V|
 +^t10|101x33 mono|OM 4086U/2/2|** **|** **|[[ericsson1#pinout-2|pinout-2]]|I2C|0x78h (only write mode)|2.7V|
 +^t18|101x33 mono|OM 4086U/2/2|** **|** **|[[ericsson1#pinout-2|pinout-2]]|I2C|0x78h (only write mode)|2.7V|
 +^t39|101x54 mono| |** **|** **|[[ericsson1#pinout-3|pinout-3]]|I2C|0x76|2.8V|
 +^A1018|101x40? mono|[[ericsson1#pcf8558|PCF8558]]|** **|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x70h, 0x71h|2.8V|
 +^A2618|102/101?x64 mono|Philips PCF 8548|** **|** **|[[ericsson1#pinout-4|pinout-4]]|I2C|0x7A, 0x7B|2.8V|
 +^A2628|102/101?x64 mono|Philips PCF 8548|** **|** **|[[ericsson1#pinout-4|pinout-4]]|I2C|0x7A, 0x7B|2.8V|
 +^R310|101×33 mono|OM 4086U/2/2|**LPH7754**|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x78h (only write mode)|2.7V|
 +
 +===== Hardware description =====
 +==== pinout-1 ====
 +/*{{arduino:nokia:lph7366_pinout.gif}}(([[https://web.archive.org/web/20171209101939/http://www.module.ro/nokia_3510.html|www.module.ro/nokia_3510.html]], by Bergthaller Iulian-Alexandru))*/
 +^The lcd has 5 pins:^^^
 +^Pin^Label^Description|
 +^1|Vlcd|6.4V|
 +^2|Vlogic|2.7V|
 +^3|Sdata|I2C data|
 +^4|Gnd| |
 +^5|Sclk|I2C clock|
 +
 +==== pinout-2 ====
 +/*{{arduino:nokia:lph7366_pinout.gif}}(([[https://web.archive.org/web/20171209101939/http://www.module.ro/nokia_3510.html|www.module.ro/nokia_3510.html]], by Bergthaller Iulian-Alexandru))*/
 +^The lcd has 5 pins:^^^
 +^Pin^Label^Description|
 +^1|Vlcd|+6.4V|
 +^2|Vlogic|+2.7V|
 +^3|Sdata|I2C data|
 +^4|Gnd| |
 +^5|Sclk|I2C clock|
 +
 +==== pinout-3 ====
 +/*{{arduino:nokia:lph7366_pinout.gif}}(([[https://web.archive.org/web/20171209101939/http://www.module.ro/nokia_3510.html|www.module.ro/nokia_3510.html]], by Bergthaller Iulian-Alexandru))*/
 +^The lcd has 8 pins:^^^
 +^Pin^Label^Description|
 +^1|El1|(cca. 50V / 100 KHz)|
 +^2|_Reset| |
 +^3|Sclk|I2C clock|
 +^4|Gnd| |
 +^5|Sdata|I2C data|
 +^6|Vlogic|2.8V|
 +^7|Vlcd|from internal dc/dc convertor|
 +^8|El2| |
 +
 +==== pinout-4 ====
 +/*{{arduino:nokia:lph7366_pinout.gif}}(([[https://web.archive.org/web/20171209101939/http://www.module.ro/nokia_3510.html|www.module.ro/nokia_3510.html]], by Bergthaller Iulian-Alexandru))*/
 +^The lcd has 6 pins:^^^
 +^Pin^Label^Description|
 +^1|_Reset| |
 +^2|Vlogic|2.8V|
 +^3|Sdata|I2C data|
 +^4|Sclk|I2C clock|
 +^5|Gnd| |
 +^6|Vlcd|6.4V from internal dc/dc convertor|
 +
 +==== pcf8558 ====
 + * based on {{:electronic:datasheet:philips:pcf8558.pdf|Philips PCF8558}}
 +
 +Instruction format: control byte followed by column address
 +
 +^Instruction^D7^D6^D5^D4^D3^D2^D1^D0^Description|
 +^\\ Display control  byte:|\\  Y2  |\\  Y1  |\\  Y0  |0|0|0|0|0|Y address vector, blank mode|
 +^:::|:::|:::|:::|0|1|0|0|1|Y address vector, normal mode|
 +^:::|:::|:::|:::|0|1|1|0|1|Y address vector, all segments on mode| 
 +^Column address: |0|  X address  |||||||set column address|
 +
 +
 +====== References and Additional Resources ======
 +  * https://web.archive.org/web/20240908105613/https://www.8051projects.net/custompages/ericsson.php
 +  * https://kazus.run/indexs/shemes/0/16779/0.html
 +  * http://sandiding.tripod.com/Bertys.html
 +
 + /* * [[https://web.archive.org/web/20101223092811/http://www.module.ro/lph7366.html|Additional info]] */
 +
 +\\
 +\\
  

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