Datasheet HD44780U (LCD-II) (Hitachi) - 17

HD44780U Table 4 Correspondence between Character Codes and Character Patterns (ROM Code: A00) Upper 4 Lower Bits 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 4 Bits
CG RAM xxxx0000 (1) xxxx0001 (2) xxxx0010 (3) xxxx0011 (4) xxxx0100 (5) xxxx0101 (6) xxxx0110 (7) xxxx0111 (8) xxxx1000 (1) xxxx1001 (2) xxxx1010 (3) xxxx1011 (4) xxxx1100 (5) xxxx1101 (6) xxxx1110 (7) xxxx1111 (8) Note: The user can specify any pattern for character-generator RAM. 17 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