HD44780UHD44780U Pad Arrangement Chip size: 4.90 × 4.90 mm2 Coordinate: Pad center (µm) Origin: Chip center Pad size: 114 × 114 µm2 2 1 80 63 Y Type code HD44780U 23 42 X 6 Document Outline Description Features Ordering Information HD44780U Block Diagram HD44780U Pin Arrangement (FP-80B) HD44780U Pin Arrangement (TFP-80F) HD44780U Pad Arrangement HD44780U Pad Location Coordinates Pin Functions Function Description Interfacing to the MPU Reset Function Instructions Instruction Description Interfacing the HD44780U Power Supply for Liquid Crystal Display Drive Relationship between Oscillation Frequency and Liquid Crystal Display Frame Frequency Instruction and Display Correspondence Initializing by Instruction Absolute Maximum Ratings DC Characteristics AC Characteristics Bus Timing Characteristics Interface Timing Characteristics with External Driver Power Supply Conditions Using Internal Reset Circuit DC Characteristics AC Characteristics Bus Timing Characteristics Interface Timing Characteristics with External Driver Power Supply Conditions Using Internal Reset Circuit Electrical Characteristics Notes Load Circuits Timing Characteristics