- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370471 > HD66702 (Hitachi,Ltd.) Dot Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器) PDF資料下載
參數(shù)資料
| 型號： | HD66702 |
| 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)： | 16/69頁 |
| 文件大?。?/td> | 352K |
| 代理商： | HD66702 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁
HD66702/HD66701
16
Function Description
Registers
The HD66701/2 has two 8-bit registers, an instruction register (IR) and a data register (DR).
The IR stores instruction codes, such as display clear and cursor shift, and address information for display
data RAM (DDRAM) and character generator RAM (CGRAM). The IR can only be written from the MPU.
The DR temporarily stores data to be written into DDRAM or CGRAM. Data written into the DR from the
MPU is automatically written into DDRAM or CGRAM by an internal operation. The DR is also used for
data storage when reading data from DDRAM or CGRAM. When address information is written into the
IR, data is read and then stored into the DR from DDRAM or CGRAM by an internal operation. Data
transfer between the MPU is then completed when the MPU reads the DR. After the read, data in DDRAM
or CGRAM at the next address is sent to the DR for the next read from the MPU. By the register selector
(RS) signal, these two registers can be selected (Table 2).
Busy Flag (BF)
When the busy flag is 1, the HD66701/2 is in the internal operation mode, and the next instruction will not
be accepted. When RS = 0 and R/W = 1 (Table 2), the busy flag is output to DB7. The next instruction
must be written after ensuring that the busy flag is 0.
Address Counter (AC)
The address counter (AC) assigns addresses to both DDRAM and CGRAM. When an address of an
instruction is written into the IR, the address information is sent from the IR to the AC. Selection of either
DDRAM or CGRAM is also determined concurrently by the instruction.
After writing into (reading from) DDRAM or CGRAM, the AC is automatically incremented by 1
(decremented by 1). The AC contents are then output to DB0 to DB6 when RS = 0 and R/
W
= 1 (Table 2).
Table 2
Register Selection
RS
R/
W
Operation
0
0
IR write as an internal operation (display clear, etc.)
0
1
Read busy flag (DB7) and address counter (DB0 to DB6)
1
0
DR write as an internal operation (DR to DDRAM or CGRAM)
1
1
DR read as an internal operation (DDRAM or CGRAM to DR)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| HD66705U | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver(圖形LCD控制器/驅(qū)動器) |
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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。