參數(shù)資料
型號(hào)： HCD66717A03
廠商： Hitachi,Ltd.
元件分類： 晶體
英文描述： (Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver)
中文描述： （低功耗點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器）
文件頁(yè)數(shù)： 14/90頁(yè)
文件大?。?/td> 716K
代理商： HCD66717A03
HD66717
465
Table 4
Display-Line Modes, Display-Start Line, and DDRAM Addresses
Display-Start Lines
Display-
Line Mode
Duty
Ratio
Common Pins
1st Line
(SN = 000)
2nd Line
(SN = 001)
3rd Line
(SN = 010)
4th Line
(SN = 011)
5th Line
(SN = 100)
1-line
(NL = 00)
1/10
COM1–COM8
00H–0BH
10H–1BH
20H–2BH
30H–3BH
40H–4BH
2-line
(NL = 01)
1/18
COM1–COM8
COM9–COM16
00H–0BH
10H–1BH
10H–1BH
20H–2BH
20H–2BH
30H–3BH
30H–3BH
40H–4BH
40H–4BH
00H–0BH
3-line
(NL = 10)
1/26
COM1–COM8
COM9–COM16
COM17–COM24
00H–0BH
10H–1BH
20H–2BH
10H–1BH
20H–2BH
30H–3BH
20H–2BH
30H–3BH
40H–4BH
30H–3BH
40H–4BH
00H–0BH
40H–4BH
00H–0BH
10H–1BH
4-line
(NL = 11)
1/34
COM1–COM8
COM9–COM16
COM17–COM24
COM25–COM32
00H–0BH
10H–1BH
20H–2BH
30H–3BH
10H–1BH
20H–2BH
30H–3BH
40H–4BH
20H–2BH
30H–3BH
40H–4BH
00H–0BH
30H–3BH
40H–4BH
00H–0BH
10H–1BH
40H–4BH
00H–0BH
10H–1BH
20H–2BH
Character Generator ROM (CGROM)
The character generator ROM generates 5
×
8-dot character patterns from 8-bit character codes (Table 5).
It can generate 240 5
×
8-dot character patterns. User-defined character patterns are also available using a
mask-programmed ROM (see the Modifying Character Patterns section.)
Character Generator RAM (CGRAM)
The character generator RAM of 32
×
5 bits allows the user to redefine the character patterns for user
fonts. In the case of 5
×
8-dot characters, up to four fonts may be redefined.
Write the character codes at addresses 00H to 03H into DDRAM to display the character patterns stored
in CGRAM.
Segment RAM (SEGRAM)
The segment RAM is used to enable control of segments such as an icon and a mark by the user program.
Segments and characters are driven by a multiplexing drive method.
SEGRAM has a capacity of 8
×
5 bits, for controlling the display of a maximum of 40 icons and marks.
While COMS1 and COMS2 outputs are being selected, SEGRAM is read and segments (icons and marks)
are displayed by a multiplexing drive method (20 segments each during COMS1 and COMS2 selection).
Bits in SEGRAM corresponding to segments to be displayed are directly set by the MPU, regardless of
the contents of DDRAM and CGRAM.
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