Published 3 Sep 2026

Ericsson Displays

\\ ===== Overview ===== ^ Ericsson cellphone LCDs ||||||||| ^Phone^Resolution^Chip^LCD^Part num^Pinout^Interface^I2C addr^Voltage| ^t20|101x33 mono|based on {{:electronic:datasheet:philips:pcf8558.pdf|Philips PCF8558}}|** **|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x70h, 0x71h|2.7V| ^t28|101x33 mono|based on {{:electronic:datasheet:philips:pcf8558.pdf|Philips PCF8558}}|** **|** **|[[ericsson1#pinout-1|pinout-1]]|I2C|0x70h, 0x71h|2.7V| ^t29|101x33 mono|based on {{:electronic:datasheet:philips:pcf8558.pdf|Philips 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| /* ^2160|3 rows x 10 chars plus icons, plus 12 chars((https://www.youtube.com/watch?v=_T7AE-kIGPI))| ^ |||||||| ^3810|4 rows x 13 chars plus icons((but may actually be graphic screen))| ^ |||||||| ^[[:electronic:lcd:nokia3210|3210]]|84x48|PCD8544/ OM206((lcdtable.xls))|LPH7677((http://serdisplib.sourceforge.net/ser/pcd8544.html))| |[[nokia1#pinout-2|pinout-2]]| ^[[:electronic:lcd:nokia3210|3210]]|84x48|PCD8544|**LPH7677-1**|**4850107**|[[nokia1#pinout-2|pinout-2]]|serial SPI|2.7V - 3.3V| {{ :electronic:lcd:.jpg?200|Ericsson T20 LCD overview}} ^ LCD Description || ^Model|**Ericsson T20, Ericsson T28, Ericsson T29**| ^Manufacturer|Ericsson| ^Recovered from| | ^Board IDs| | ^LCD type|Positive| ^Polarizer type| | ^Columns|101| ^Rows|54| ^Char matrix|-| ^Driver IC|based on {{:electronic:datasheet:philips:pcf8558.pdf|Philips PCF8558}}| ^Backlight|-| ^Arduino driver| | ^Connector| | ^Num Pins| | ^Pin spacing|"| ^Module size|28mm| I2c device address: 0x70h, 0x71h ^ Connector pin-out ^^| ^Pin^Label^Description| ^1|Vlcd|6.4V| ^2|Vlogic|2.7V| ^3|Sdata|(i2c)| ^4|Gnd| ^5|Sclk|(i2c)| \\ \\ ---- ===== Examples : ===== {{:electronic:lcd:.jpg?800|Ericsson T20 LCD front}} |{{:electronic:lcd:.jpg?800|Ericsson T20 LCD back}} |{{:electronic:lcd:.jpg?800|Ericsson T20 LCD overview with board}} |{{:electronic:lcd:.jpg?300|Ericsson T20 LCD connector}} |{{:electronic:lcd:.jpg?300|Ericsson T20 LCD chip}} |{{:electronic:lcd:.jpg?300|Ericsson T20 LCD character set}} |{{:electronic:lcd:.jpg?400|Ericsson T20 LCD examples}} |{{:electronic:lcd:.jpg?200|Ericsson T20 LCD pixel layout}} |{{:electronic:lcd:.jpg?800|Ericsson T20 LCD circuit}} /* https://web.archive.org/web/20240908105613/https://www.8051projects.net/custompages/ericsson.php */ ====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| 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| ====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| | /* * [[https://web.archive.org/web/20101223092811/http://www.module.ro/lph7366.html|Additional info]] */ \\ \\