hd66712u Renesas Electronics Corporation., hd66712u Datasheet - Page 29
hd66712u
Manufacturer Part Number
hd66712u
Description
Dot-matrix Liquid Crystal Display Controller/driver - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66712U.pdf
(88 pages)
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HD66712U
Notes: 1. Character code bits 0 to 2 correspond to CGRAM address bits 3 to 5 (3 bits: 8 types).
392
2. CGRAM address bits 0 to 2 designate the character pattern line position. The 8th line is the
3. The character data is stored with the rightmost character element in bit 0, as shown in the
4. When the upper four bits (bits 7 to 4) of the character code are 0, CGRAM is selected.
5. A set bit in the CGRAM data corresponds to display selection, and 0 to non-selection.
6. When the BE bit of the function set register is 1, pattern blinking control of the lower six bits is
*
cursor position and its display is formed by a logical OR with the cursor.
figure above. Characters of 5 dots in width (FW = 0) are stored in bits 0 to 4, and characters of
6 dots in width (FW = 1) are stored in bits 0 to 5.
Bit 3 of the character code is invalid (*). Therefore, for example, the character codes (00)H and
(08)H correspond to the same CGRAM address.
controlled using the upper two bits (bits 7 and 6) in CGRAM.
When bit 7 is 1, of the lower six bits, only those which are set are blinked on the display.
When bit 6 is 1, a bit 4 pattern can be blinked as for a 5-dot font width, and a bit 5 pattern
can be blinked as for a 6-dot font width.
Indicates no effect.
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