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參數(shù)資料
| 型號： | HCD66712UA03 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Dot-Matrix Liquid Crystal Display Controller/Driver |
| 中文描述： | 點陣液晶顯示控制器/驅動器 |
| 文件頁數(shù)： | 36/88頁 |
| 文件大小： | 662K |
| 代理商： | HCD66712UA03 |
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HD66712U
399
Interfacing to the MPU
The HD66712 can send data in either two 4-bit operations or one 8-bit operation, thus allowing
interfacing with 4- or 8-bit MPUs.
For 4-bit interface data, only four bus lines (DB4 to DB7) are used for transfer. Bus lines DB0 to DB3
are disabled. The data transfer between the HD66712 and the MPU is completed after the 4-bit data
has been transferred twice. As for the order of data transfer, the four high order bits (for 8-bit
operation, DB4 to DB7) are transferred before the four low order bits (for 8-bit operation, DB0 to
DB3).
The busy flag must be checked (one instruction) after the 4-bit data has been transferred twice. Two
more 4-bit operations then transfer the busy flag and address counter data.
For 8-bit interface data, all eight bus lines (DB0 to DB7) are used.
When the IM pin is low, the HD66712 uses a serial interface. See “Transferring Serial Data.”
RS
R/W
E
IR7
IR6
IR5
IR4
BF
AC6
AC5
AC4
DB7
DB6
DB5
DB4
Instruction register (IR)
write
Busy flag (BF) and
address counter (AC)
read
Data register (DR)
read
IR3
IR2
IR1
IR0
AC3
AC2
AC1
AC0
DR7
DR6
DR5
DR4
DR3
DR2
DR1
DR0
Figure 13 4-Bit Transfer Example
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HCD66712UA03BP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver |
| HCD66717A03 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver) |
| HCD66717A03BP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver) |
| HCD66717A13BP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver) |
| HCD66724RA03BP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER |
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