- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374693 > SAB80C515A-5 (SIEMENS AG) 8-Bit CMOS Single-Chip Microcontroller Family PDF資料下載
參數(shù)資料
| 型號： | SAB80C515A-5 |
| 廠商： | SIEMENS AG |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-Bit CMOS Single-Chip Microcontroller Family |
| 中文描述： | 8位CMOS單芯片微控制器系列 |
| 文件頁數(shù)： | 15/57頁 |
| 文件大小： | 899K |
| 代理商： | SAB80C515A-5 |
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頁當(dāng)前第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
SAB 80C515A/83C515A-5
Semiconductor Group
14
Data Memory ('Data Space')
The data memory space consists of an internal and an external memory space.The
SAB 80C515A contains another 1 Kbyte on On-Chip RAM additional to the 256-bytes internal
RAM of the base type SAB 80C515. This RAM is called XRAM ('extended RAM') in this
document.
External Data Memory
Up to 64 Kbyte external data memory can be addressed by instructions that use 8-bit or 16-bit
indirect addressing. For 8-bit addressing MOVX instructions in combination with registers R0
and R1 can be used. A 16-bit external memory addressing is supported by a 16-bit datapointer.
Registers XPAGE and SYSCON are controlling whether data fetches at addresses F800
H
to
FBFF
H
are done from internal XRAM or from external data memory.
Internal Data Memory
The internal data memory is divided into four physically distinct blocks:
– the lower 128 bytes of RAM including four register banks containing eight
registers each
– the upper 128 byte of RAM
– the 128 byte special function register area.
– a 1 K
×
8 area which is accessed like external RAM (MOVX-instructions), implemented on
chip at the address range from F800
H
to FBFF
H
. Special Function Register SYSCON
controls whether data is read from or written to XRAM or external RAM.
A map of the internal data memory is shown in figure 2. The overlapping address spaces of the
standard internal data memory (256 byte) are accessed by different addressing modes (see
User's Manual SAB 80C515). The stack can be located anywhere in the internal data memory.
Architecture of the XRAM
The contents of the XRAM is not affected by a reset or HW Power Down. After power-up the
contents is undefined, while it remains unchanged during and after a reset or HW Power Down
if the power supply is not turned off.
The additional On-Chip RAM is logically located in the "external data memory" range at the
upper end of the 64 Kbyte address range (F800
H
-FBFF
H
). Nevertheless when XRAM is
enabled the address range F800
H
to FFFF
H
is occupied. This is done to assure software
compatibility to SAB 80C517A. It is possible to enable and disable (only by reset) the XRAM. If
it is disabled the device shows the same behaviour as the parts without XRAM, i.e. all MOVX
accesses use the external bus to physically external data memory.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAB80C515A-M18-T3 | 8-Bit CMOS Single-Chip Microcontroller |
| SAB83C515A-5M18-T3 | 8-Bit CMOS Single-Chip Microcontroller |
| SAB83C515A-5N18 | |
| SAB83C515A-5N18-T3 | 8-Bit CMOS Single-Chip Microcontroller |
| SAB83C515A-5 | 8-Bit CMOS Single-Chip Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB80C515A-M18-T3 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C515AN18 | 制造商:Infineon Technologies AG 功能描述:MCU 8-Bit C500 8051 CISC ROMLess 5V 68-Pin PLCC |
| SAB-80C515A-N18 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述: |
| SAB80C515A-N18 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C515A-N18-T3 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。