參數(shù)資料
型號(hào)： SAB-C509-LM
廠商： INFINEON TECHNOLOGIES AG
英文描述： DBMM25SN
中文描述： 8位CMOS微控制器
文件頁(yè)數(shù)： 19/74頁(yè)
文件大?。?/td> 1607K
代理商： SAB-C509-LM
C509-L
Semiconductor Group
18
XRAM Mode Configuration
The XRAM Mode is implemented in the C509-L for executing e.g. up to 3K byte diagnostic software
which has been loaded into the XRAM in the Bootstrap Mode via the serial interface. In this
operating mode the Boot ROM, the XRAM, and the external data memory are mapped into the code
memory area, while the external ROM/EPROM is mapped into the external data memory area.
External program memory fetches from the SRAM are controlled by the P3.7/RD/PSENX pin.
External data memory read accesses from the ROM/EPROM are controlled by the PSEN/RDF pin.
In XRAM mode, the external data memory can only be read but not written.
Figure 7
Locations of Code- and Data Memory in XRAM Mode
相關(guān)PDF資料
PDF描述
SAF-C509-LM 8-Bit CMOS Microcontroller
SAB-C509-LM 8-Bit CMOS Microcontroller
SAF-C509-LM 8-Bit CMOS Microcontroller
SAF-C509-L 8-Bit CMOS Microcontroller
SAFC509-L 8-Bit CMOS Microcontroller
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