- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372309 > ST7066-0B Controller Miscellaneous - Datasheet Reference PDF資料下載
參數(shù)資料
| 型號： | ST7066-0B |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 6/30頁 |
| 文件大?。?/td> | 363K |
| 代理商： | ST7066-0B |
第1頁第2頁第3頁第4頁第5頁當(dāng)前第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
ST7066
FUNCTION DESCRIPTION
System Interface
This chip has all two kinds of interface type with MPU : 4-bit bus and 8-bit bus. 4-bit bus or 8-bit bus is selected by DL
bit in the instruction register.
During read or write operation, two 8-bit registers are used. One is data register (DR), the other is instruction
register(IR).
The data register(DR) is used as temporary data storage place for being written into or read from DDRAM/CGRAM,
target RAM is selected by RAM address setting instruction. Each internal operation, reading from or writing into
RAM, is done automatically. So to speak, after MPU reads DR data, the data in the next DDRAM/CGRAM address is
transferred into DR automatically. Also after MPU writes data to DR, the data in DR is transferred into
DDRAM/CGRAM automatically.
The Instruction register(IR) is used only to store instruction code transferred from MPU. MPU cannot use it to read
instruction data.
To select register, use RS input pin in 4-bit/8-bit bus mode.
Table 1. Various kinds of operations according to RS and R/W bits.
RS RW
Operation
L
L Instruction Write operation (MPU writes Instruction code
into IR)
L
H Read Busy Flag(DB7) and address counter (DB0 ~ DB6)
H
L Data Write operation (MPU writes data into DR)
H
H Data Read operation (MPU reads data from DR)
Busy Flag (BF)
When BF = "High”, it indicates that the internal operation is being processed. So during this time the next instruction
cannot be accepted. BF can be read, when RS = Low and R/W = High (Read Instruction Operation), through DB7
port. Before executing the next instruction, be sure that BF is not High.
Address Counter (AC)
Address Counter(AC) stores DDRAM/CGRAM address, transferred from IR.
After writing into (reading from) DDRAM/CGRAM, AC is automatically increased (decreased) by 1.
When RS = "Low" and R/W = "High", AC can be read through DB0 ~ DB6 ports.
V1.1
1999/12/29
6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST72311N5B6 | 8-BIT MICROCONTROLLER |
| ST72311N6B6 | 8-BIT MICROCONTROLLER |
| ST72311R4Q6 | 8-BIT MICROCONTROLLER |
| ST72311R5Q6 | 8-BIT MICROCONTROLLER |
| ST72311R6Q6 | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST7066U | 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:Dot Matrix LCD Controller/Driver |
| ST7070 | 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:Dot Matrix LCD Controller/Driver |
| ST7078 | 制造商:Pulse 功能描述:CMC - Bulk |
| ST7078001 | 制造商:PULSE 功能描述:* |
| ST7078-001 | 制造商:Pulse 功能描述:CMC, SEE 23Z104SM-T FOR STD PART INSTEAD - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。