Additional preview pages of the ACM2402B datasheet.
ACM2402B Product details
Description
Ground Supply voltage for logic
LCD contrast adjust Register select Read / write Enable Data bit 0 Data bit 1 Data bit 2 Data bit 3 Data bit 4 Data bit 5 Data bit 6 Data bit 7
Anode for LED backlight Cathode for LED backlight
Function
0V +5V By user H: Data; L: Instruction code H: Data read, L: Dat