參數(shù)資料
型號(hào)： HD66701
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)： 48/69頁(yè)
文件大?。?/td> 352K
代理商： HD66701
HD66702/HD66701
48
Instruction and Display Correspondence
8-bit operation, 20-digit
×
1-line display with internal reset
Refer to Table 12 for an example of an 8-bit
×
1-line display in 8-bit operation. The HD66702 functions
must be set by the function set instruction prior to the display. Since the display data RAM can store
data for 80 characters, as explained before, the RAM can be used for displays such as for advertising
when combined with the display shift operation.
Since the display shift operation changes only the display position with DDRAM contents unchanged,
the first display data entered into DDRAM can be output when the return home operation is performed.
4-bit operation, 20-digit
×
1-line display with internal reset
The program must set all functions prior to the 4-bit operation (Table 13). When the power is turned on,
8-bit operation is automatically selected and the first write is performed as an 8-bit operation. Since
DB0 to DB3 are not connected, a rewrite is then required. However, since one operation is completed in
two accesses for 4-bit operation, a rewrite is needed to set the functions (see Table 13). Thus, DB4 to
DB7 of the function set instruction is written twice.
8-bit operation, 20-digit
×
2-line display
For a 2-line display, the cursor automatically moves from the first to the second line after the 40th digit
of the first line has been written. Thus, if there are only 20 characters in the first line, the DDRAM
address must be again set after the 20th character is completed. (See Table 14.) Note that the display
shift operation is performed for the first and second lines. In the example of Table 14, the display shift
is performed when the cursor is on the second line. However, if the shift operation is performed when
the cursor is on the first line, both the first and second lines move together. If the shift is repeated, the
display of the second line will not move to the first line. The same display will only shift within its own
line for the number of times the shift is repeated.
Note:
When using the internal reset, the electrical characteristics in the Power Supply Conditions Using
Internal Reset Circuit table must be satisfied. If not, the HD66702 must be initialized by
instructions. (Because the internal reset does not function correctly when V
CC
is 3V, it must always
be initialized by software.) See the section, Initializing by Instruction.
相關(guān)PDF資料
PDF描述
HD66702 Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
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HD66727A04TA0L 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
HD66702 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
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
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