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HD44780 Datasheet(PDF) 40 Page - Hitachi Semiconductor |
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40 page 
HD44780U 40 Table 11 8-Bit Operation, 8-Digit × 1-Line Display Example with Internal Reset Step Instruction No. RS R/ W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Display Operation 1 Power supply on (the HD44780U is initialized by the internal reset circuit) Initialized. No display. 2 Function set 00 001 100 * * Sets to 8-bit operation and selects 1-line display and 5 × 8 dot character font. (Number of display lines and character fonts cannot be changed after step #2.) 3 Display on/off control 00 000 011 10 _ Turns on display and cursor. Entire display is in space mode because of initialization. 4 Entry mode set 00 000 001 10 _ Sets mode to increment the address by one and to shift the cursor to the right at the time of write to the DD/CGRAM. Display is not shifted. 5 Write data to CGRAM/DDRAM 10 010 010 00 H_ Writes H. DDRAM has already been selected by initialization when the power was turned on. The cursor is incremented by one and shifted to the right. 6 Write data to CGRAM/DDRAM 10 010 010 01 HI_ Writes I. 7· · · · · · · · · · 8 Write data to CGRAM/DDRAM 10 010 010 01 HITACHI_ Writes I. 9 Entry mode set 00 000 001 11 HITACHI_ Sets mode to shift display at the time of write. 10 Write data to CGRAM/DDRAM 10 001 000 00 ITACHI _ Writes a space. |
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