CORE: ATMEGA16 (16Mhz)
TWI(I2C) adapter: based on PCF8574T
Default PCF8574T address:
0x27 - 7bit address 0x4E- address & command write
Support LCD Displays:
- LCD 1602A based on HD44780
- LCD WH1604A (Winstar)
| LCD Pin | LCD Name | PCF8574 |
|---|---|---|
| 1 | VSS(Ground) | x |
| 2 | VDD(+5V) | x |
| 3 | V0(Contrast voltage) | x |
| 4 | RS(Register select) | P0 |
| 5 | RW(Read/Write) | P1 |
| 6 | E(Enable) | P2 |
| 7 | DB0 | x |
| 8 | DB1 | x |
| 9 | DB2 | x |
| 10 | DB3 | x |
| 11 | DB4 | P4 |
| 12 | DB5 | P5 |
| 13 | DB6 | P6 |
| 14 | DB7 | P7 |
| 15 | A(BackLight +5V) | x |
| 16 | K(BackLight Ground) | P3 |