Datasheet HD44780U (LCD-II) (Hitachi) - 4

HD44780U HD44780U Pin Arrangement (FP-80B)
SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 SEG22 1 64 SEG39 SEG21 2 63 SEG40 SEG20 3 62 COM16 SEG19 4 61 COM15 SEG18 5 60 COM14 SEG17 6 59 COM13 SEG16 7 58 COM12 SEG15 8 57 COM11 SEG14 9 56 COM10 SEG13 10 55 COM9 SEG12 11 54 COM8 SEG11 12 FP-80B 53 COM7 SEG10 13 (Top view) 52 COM6 SEG9 14 51 COM5 SEG8 15 50 COM4 SEG7 16 49 COM3 SEG6 17 48 COM2 SEG5 18 47 COM1 SEG4 19 46 DB7 SEG3 20 45 DB6 SEG2 21 44 DB5 SEG1 22 43 DB4 GND 23 42 DB3 OSC1 24 41 DB2 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 V1 V2 V3 V4 V5 E CC M D CL1 CL2 V RS R/W DB0 DB1 OSC2 4 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