HD66727 Datasheet, PDF (17/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

HD66727
Table 5 DDRAM Addresses and Display Positions
Display
Line
1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th
Char. Char. Char. Char. Char. Char. Char. Char. Char. Char. Char. Char.
1st
00 01 02 03 04 05 06 07 08 09 0A 0B
2nd
10 11 12 13 14 15 16 17 18 19 1A 1B
3rd
20 21 22 23 24 25 26 27 28 29 2A 2B
4th
30 31 32 33 34 35 36 37 38 39 3A 3B
5th
40 41 42 43 44 45 46 47 48 49 4A 4B
Note: Char. indicates character position.
Table 6 Display-Line Modes, Display-Start Line, and DDRAM Addresses
Display-
Line Mode
1-line
(NL = 00)
2-line
(NL = 01)
3-line
(NL = 10)
4-line
(NL = 11)
Duty
Ratio
1/10
1/18
1/26
1/34
Common
Pins
COM1–
COM8
COM1–
COM8
COM9–
COM16
COM1–
COM8
COM9–
COM16
COM17–
COM24
COM1–
COM8
COM9–
COM16
COM17–
COM24
COM25–
COM32
Display-Start Lines
1st Line 2nd Line 3rd Line 4th Line 5th Line
(SN = 000) (SN = 001) (SN = 010) (SN = 011) (SN = 100)
“00”H–“0B”H “10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H
“00”H–“0B”H “10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H
“10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H “00”H–“0B”H
“00”H–“0B”H “10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H
“10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H “00”H–“0B”H
“20”H–“2B”H “30”H–“3B”H “40”H–“4B”H “00”H–“0B”H “10”H–“1B”H
“00”H–“0B”H “10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H
“10”H–“1B”H “20”H–“2B”H “30”H–“3B”H “40”H–“4B”H “00”H–“0B”H
“20”H–“2B”H “30”H–“3B”H “40”H–“4B”H “00”H–“0B”H “10”H–“1B”H
“30”H–“3B”H “40”H–“4B”H “00”H–“0B”H “10”H–“1B”H “20”H–“2B”H
Character Generator ROM (CGROM)
Character generator ROM (CGROM) generates 6 × 8-dot character patterns from 8-bit character codes. It
can generate 240 6 × 8-dot character patterns. Table 7 illustrates the relation between character codes and
character patterns for the Hitachi standard CGROM. User-defined character patterns are also available
using a mask-programmed ROM (see the Modifying Character Patterns section).
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