- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376424 > UPD17217GT (NEC Corp.) 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER PDF資料下載
參數(shù)資料
| 型號： | UPD17217GT |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁數(shù)： | 14/84頁 |
| 文件大?。?/td> | 350K |
| 代理商： | UPD17217GT |
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頁當(dāng)前第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頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁
μ
PD17215, 17216, 17217, 17218
14
2.4
Data Memory (RAM)
Data memory (random access memory) stores data for operations and control. It can be read-/write-accessed by
instructions.
2.4.1
Memory configuration
Figure 2-4 shows the configuration of the data memory (RAM).
The data memory consists of two “banks”: BANK0 and BANK1.
In each bank, every 4 bits of data is assigned an address. The higher 3 bits of the address indicate a “row address” and
the lower 4 bits of the address indicate a “column address”. For example, a data memory location indicated by row address
1H and column address 0AH is termed a data memory location at address 1AH. Each address stores data of 4 bits (= a
“nibble”).
In addition, the data memory is divided into following six functional blocks:
(1)
System register (SYSREG)
A system register (SYSREG) is resident on addresses 74H to 7FH (12 nibbles long) of each bank. In other
nibbles, each bank has a system register at its addresses 74H to 7FH.
(2)
Data buffer (DBF)
A data buffer is resident on addresses 0CH to 0FH (4 nibbles long) of bank 0 of data memory.
The reset value is 0320H.
(3)
General register (GR)
A general register is resident on any row (16 nibbles long) of any bank of data memory.
The row address of the general register is pointed by the general pointer (RP) in the system register (SYSREG).
(4)
Port register
A port data register is resident on addresses 6FH, and 70H to 73H (5 nibbles) of BANK0 of data memory.
No data can be written to the addresses 70H to 73H of BANK1 (the values of addresses 70H to 73H of BANK0
are read in this case).
μ
PD17215 and 17216 are not provided with BANK1.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17218 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17218CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17218GT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17215GT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17217CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17218 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17218CT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17218GT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225CT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。