The HD44780 indicator has a 5 volt pin VDD supply voltage.
All other pins have TTL standard. TTL standard logical unit voltage is more than 2.4 volts.
The RP2040 has a 3.3 volt power supply and a CMOS output. Therefore, the logical unit will have a voltage of 3.3 volts at the output. Everything works for me.
No level converters are needed.
All other pins have TTL standard. TTL standard logical unit voltage is more than 2.4 volts.
The RP2040 has a 3.3 volt power supply and a CMOS output. Therefore, the logical unit will have a voltage of 3.3 volts at the output. Everything works for me.
No level converters are needed.
Statistics: Posted by Aleks_2024 — Sun Jan 05, 2025 7:00 pm