- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370471 > HD66724 (Hitachi,Ltd.) Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) PDF資料下載
參數(shù)資料
| 型號(hào)： | HD66724 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) |
| 中文描述： | 圖形液晶顯示控制器/鍵掃描功能（帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動(dòng)器驅(qū)動(dòng)程序） |
| 文件頁(yè)數(shù)： | 19/117頁(yè) |
| 文件大?。?/td> | 834K |
| 代理商： | HD66724 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)當(dāng)前第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)
HD66724/HD66725
19
Block Function Description
System Interface
The HD66724/HD66725 have five types of system interfaces, and a clock-synchronized serial, a 68-system
4-bit/8-bit bus, and a 80-system 4-bit/8-bit bus. The interface mode is selected by the IM2-0 pins. The key
scan of the HD66724/HD66725 are not available for the 4-bit/8-bit bus interface. Instead, use the clock-
synchronized serial interface.
The HD66724/HD66725 have two 8-bit registers: an instruction register (IR) and a data register (DR).
The IR stores instruction codes, such as clear display, display control, and address information for the
display data RAM (DDRAM), character generator RAM (CGRAM), and segment RAM (SEGRAM).
The DR temporarily stores the data to be written to and read from the DDRAM, CGRAM, or SEGRAM.
The data written to the DR from the MPU is automatically written to the DDRAM, CGRAM, or SEGRAM
by internal operation. Since the data is read from the RAM through the DR, the first read data is invalid and
the second read data is valid. After reading, the data in DDRAM, CGRAM, or SEGRAM at the next
address is sent to the DR for the next reading from the MPU.
Execution time for instruction excluding clear display is 0 clock cycle and instructions can be written in
succession.
Table 3
Register Selection by RS and R/W Bits
R/W Bits
RS Bits
Operations
0
0
Writes an instruction to the IR
1
0
Reads key scan data (SCAN0-3)
0
1
Writes the data to the DR to DDRAM, CGRAM, or SEGRAM
1
1
Reads the data from the DDRAM, CGRAM, or SEGRAM to DR
Key Scan Registers (SCAN0 to SCAN3)
The key matrix scanner senses and holds the key states at each rising edge of key strobe signals KST0 to
KST3 that are output by the HD66724/HD66725. After passing through the key matrix, these strobe signals
are used to sample the key states on eight inputs from KIN0 to KIN7, enabling up to 32 keys to be scanned.
Key states KIN0 to KIN7 are sampled by key strobe signal KST0 and latched into register SCAN0.
Similarly, the data sampled by strobe signals KST1 to KST3 is latched into registers SCAN1 to SCAN3,
respectively. For details, see the Key Scan Control section.
General Output Ports (PORT0 to PORT 2)
The HD66724/HD66725 have three general output ports. These ports control drive current such as that for
LEDs or backlighting by using the current boosted by an external transistor.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66725 | Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) |
| HD66726 | Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) |
| HD66727 | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) |
| HD66728 | 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器) |
| HD66730 | Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66724/HD66725 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HD66724RA03TA0L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER |
| HD66725 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:112 x 80-dot Graphics LCD Controller/Driver |
| HD66725A03TA0L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER |
| HD66726 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。