LCD_IO 2_74xx174 has been deprecated as preferred method mode to connect an LCD display to a microcontroller via a shift register either a 74LS174 (or a 74LS164 with diode connected to pin 11). This method does not support backlight control and has no additional input/output pin.
See LCD_IO 2_74xx164 for the preferred method to connect an LCD display to a microcontroller via a shift register.
See Also:
- LCD_IO 0 — single subroutine, software-driven mode
- LCD_IO 1 — 1-wire, via a 74HC595 shift register
- LCD_IO 2 — 2-wire shift register, deprecated
- LCD_IO 2_74xx164 — 2-wire via 74HC164/74LS164, the preferred 2-wire method
- LCD_IO 3 — 3-wire shift register with an added Enable line
- LCD_IO 4 — 4-bit parallel connection
- LCD_IO 8 — 8-bit parallel connection
- LCD_IO 10 — I2C via a PCF8574/PCF8574A I/O expander
- LCD_IO 12 — I2C via a Ywmjkdz-layout adapter
- LCD_IO 14 — SPI expander
- LCD_IO 16 — PIC16LF72 SPI expander
- LCD_IO 107 — K107 serial adapter
