pin1 Vlcd (+6.4V)
pin2 Vlogic (+2.7V)
pin3 Sdata (i2c)
pin4 Gnd
pin5 Sclk (i2c)
I2c device address: 0x70h, 0x71h
Lcd chip: based on PCF8558
Instruction: control byte, address
Instruction | DB7 | DB6 | DB5 | DB4 | DB3 | DB2 | DB1 | DB0 | Description |
Display control | Y2 | Y1 | Y0 | 0 | 0 | 0 | 0 | 0 | Y address vector, blank mode |
0 | 1 | 0 | 0 | 1 | normal mode | ||||
0 | 1 | 1 | 0 | 1 | all segments on mode | ||||
X address | 0 | X address | set column address |
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