Published 3 Sep 2026
Ericsson Displays
| Ericsson cellphone LCDs | ||||||||
|---|---|---|---|---|---|---|---|---|
| Phone | Resolution | Chip | LCD | Part num | Pinout | Interface | I2C addr | Voltage |
| t20 | 101×33 mono | based on Philips PCF8558 | pinout-1 | I2C | 0x70h, 0x71h | 2.7V | ||
| t28 | 101×33 mono | based on Philips PCF8558 | pinout-1 | I2C | 0x70h, 0x71h | 2.7V | ||
| t29 | 101×33 mono | based on Philips PCF8558 | pinout-1 | I2C | 0x70h, 0x71h | 2.7V | ||
| 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 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 | Description |
|---|---|---|---|---|---|---|---|---|---|
Display control | 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 | ||||
| X address | 0 | X address | set column address | ||||||