- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374693 > SAB80C517A (INFINEON TECHNOLOGIES AG) 8-Bit CMOS Single-Chip Microcontroller PDF資料下載
參數(shù)資料
| 型號： | SAB80C517A |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-Bit CMOS Single-Chip Microcontroller |
| 中文描述： | 8位CMOS單芯片微控制器 |
| 文件頁數(shù)： | 22/77頁 |
| 文件大?。?/td> | 1358K |
| 代理商： | SAB80C517A |
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頁第16頁第17頁第18頁第19頁第20頁第21頁當(dāng)前第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
SAB 80C517A/83C517A-5
Semiconductor Group
21
1994-05-01
Special Function Register XPAGE
The reset value of XPAGE is 00
H
.
XPAGE can be set and read by software.
The register XPAGE provides the upper address byte for accesses to XRAM with MOVX @Ri
instructions. If the address formed from XPAGE and Ri is less than the XRAM address range,
then an external access is performed. For the SAB 80C517A the contents of XPAGE must be
greater or equal than F8H in order to use the XRAM. Of course, the XRAM must be enabled if
it shall be used with MOVX @Ri instructions.
Thus, the register XPAGE is used for addressing of the XRAM; additionally its contents are
used for generating the internal XRAM select. If the contents of XPAGE is less than the XRAM
address range then an external bus access is performed where the upper address byte is
provided by P2 and not by XPAGE!
Therefore, the software has to distinguish two cases, if the MOVX @Ri instructions with paging
shall be used:
a) Access to XRAM:
The upper address byte must be written to XPAGE
or P2; both writes selects the XRAM address range.
b) Access to external memory: The upper address byte must be written to P2; XPAGE
will be loaded with the same address in order to deselect
the XRAM.
Addr. 91
H
XPAGE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAB83C517A-5 | 8-Bit CMOS Single-Chip Microcontroller |
| SAB83C517A-5N18-T3 | |
| SAB83C517A-5N18-T4 | |
| SAB-80C517A-N18 | 8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517A-N18 | 8-Bit CMOS Single-Chip Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB80C517A_1 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517A-M18 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB-80C517A-N18 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517A-N18 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517AN18T3 | 制造商:Infineon Technologies AG 功能描述:MCU 8-Bit C500 8051 CISC ROMLess 5V 84-Pin PLCC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。