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參數(shù)資料
| 型號： | HD66701 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Dot Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器) |
| 中文描述： | 點陣式液晶顯示控制器/驅(qū)動器（點陣液晶顯示控制器/驅(qū)動器） |
| 文件頁數(shù)： | 42/69頁 |
| 文件大?。?/td> | 352K |
| 代理商： | HD66701 |
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HD66702/HD66701
42
Interfacing to a 4-bit MPU
The HD66701/2 can be connected to the I/O port of a 4-bit MPU. If the I/O port has enough bits, 8-bit
data can be transferred. Otherwise, one data transfer must be made in two operations for 4-bit data. In
this case, the timing sequence becomes somewhat complex. (See Figure 17.)
See Figure 18 for an interface example to the HMCS43C.
Note that two cycles are needed for the busy flag check as well as for the data transfer. The 4-bit
operation is selected by the program.
(Hitachi 4-bit single-chip
microcontroller)
'
SEG80
.
/
!
"
(
)
RS
R/W
E
Internal
operation
DB7
IR7
IR3
Busy AC3
Not
busy AC3
D7
D3
Instruction
write
Busy flag
check
Busy flag
check
Instruction
write
Note:
IR7, IR3 are the 7th and 3rd bits of the instruction.
AC3 is the 3rd bit of the address counter.
*
Functioning
Figure 17 Example of 4-Bit Data Transfer Timing Sequence
D15
D14
D13
R10 to R13
RS
R/W
E
DB4 to DB7
COM1 to
COM16
SEG1 to
SEG100
4
100
(80)
16
LCD
HMCS43C
HD66702 (HD66701)
Figure 18 Example of Interface to HMCS43C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66702 | Dot Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器) |
| HD66702R | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66727A04TA0L | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66720 | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66727A03TA0L | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
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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