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HD44780UA02TF Datasheet(PDF) 19 Page - Hitachi Semiconductor |
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HD44780UA02TF Datasheet(HTML) 19 Page - Hitachi Semiconductor |
19 / 59 page HD44780U 19 Table 5 Relationship between CGRAM Addresses, Character Codes (DDRAM) and Character Patterns (CGRAM Data) Character Codes (DDRAM data) CGRAM Address Character Patterns (CGRAM data) 76543210 0000 * 000 0000 * 001 0000 * 111 543210 000 001 111 76543210 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 * * * * * * * * * * * * * * * * * * High Low High Low High Low Character pattern (1) Cursor position 1 1 1 1 1 1 1 0 1 0 1 0 1 0 0 0 0 1 1 0 0 0 1 0 1 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 1 0 1 0 0 0 1 0 0 1 1 0 0 0 0 0 1 1 1 1 1 0 1 0 0 1 0 1 0 0 0 1 1 0 1 0 0 0 Character pattern (2) Cursor position For 5 × 8 dot character patterns Notes: 1. Character code bits 0 to 2 correspond to CGRAM address bits 3 to 5 (3 bits: 8 types). 2. CGRAM address bits 0 to 2 designate the character pattern line position. The 8th line is the cursor position and its display is formed by a logical OR with the cursor. Maintain the 8th line data, corresponding to the cursor display position, at 0 as the cursor display. If the 8th line data is 1, 1 bits will light up the 8th line regardless of the cursor presence. 3. Character pattern row positions correspond to CGRAM data bits 0 to 4 (bit 4 being at the left). 4. As shown Table 5, CGRAM character patterns are selected when character code bits 4 to 7 are all 0. However, since character code bit 3 has no effect, the R display example above can be selected by either character code 00H or 08H. 5. 1 for CGRAM data corresponds to display selection and 0 to non-selection. * Indicates no effect. |
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