參數(shù)資料
型號(hào)： HD66702
廠商： Hitachi,Ltd.
英文描述： Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
中文描述： 點(diǎn)陣式液晶顯示控制器/驅(qū)動(dòng)器（點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器）
文件頁(yè)數(shù)： 23/69頁(yè)
文件大?。?/td> 352K
代理商： HD66702
HD66702/HD66701
23
5
×
10 dot character pattern
EPROM address data and character pattern data correspond with each other to form a 5
×
10 dot
character pattern (Table 4).
Handling unused character patterns
1.
EPROM data outside the character pattern area:
Ignored by the character generator ROM for
display operation so 0 or 1 is arbitrary.
2.
EPROM data in CGRAM area:
Ignored by the character generator ROM for display operation so 0 or
1 is arbitrary.
3.
EPROM data used when the user does not use any HD66702 character pattern:
According to the
user application, handled in one of the two ways listed as follows.
a.
When unused character patterns are not programmed:
If an unused character code is written
into DDRAM, all its dots are lit. By not programing a character pattern, all of its bits become lit.
(This is due to the EPROM being filled with 1s after it is erased.)
b.
When unused character patterns are programmed as 0s:
Nothing is displayed even if unused
character codes are written into DDRAM. (This is equivalent to a space.)
Table 4
Example of Correspondence between EPROM Address Data and Character Pattern
(5
×
10 dots)
A10 A9 A8 A7 A6 A5 A4 A3 A2 A1A0
Data
O4 O3 O2 O1 O0
0 0 1
0 1 0
0 0 0
0 1 1
1 0 0
0 0 0
0 0 1
0 1 0
1 1 1 1 0 0 0 1
EPROM Address
Character code
Line
position
Fill line 11 (cursor position)
with 0s
LSB
1 0 1
1 1 0
1 1 1
1 0 0 1 0 0 0 1
1 0 0 1 0 0 0 1
1 0 0 1 0 0 0 1
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 1 1 0 1
1 0 0 1 1
1 0 0 0 1
0 0 0 0 1
0 0 0 0 1
0 0 0 0 1
1 0 0 0 1
0 1 1 1 1
Notes: 1. EPROM addresses A10 to A3 correspond to a character code. Set A8 and A9 of character
pattern lines 9, 10, and 11 to 0s.
2. EPROM addresses A2 to A0 specify a line position of the character pattern.
3. EPROM data O4 to O0 correspond to character pattern data.
4. A lit display position (black) corresponds to a 1.
5. Blank out line 11 (cursor position) of the character pattern with 0s.
6. EPROM data O5 to O7 are not used.
相關(guān)PDF資料
PDF描述
HD66702R Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
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HD66727A03TA0L Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66702R 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HD66702RA00F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66702RA00FL 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66702RA01F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66702RA02F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM-LCD CONTROLLER
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