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895132-UL 参数 Datasheet PDF下载

895132-UL图片预览
型号: 895132-UL
PDF下载: 下载PDF文件 查看货源
内容描述: USB微控制器,带有64K字节Flash存储器 [USB Microcontroller with 64K Bytes Flash Memory]
分类和应用: 存储微控制器
文件页数/大小: 182 页 / 1660 K
品牌: ATMEL [ ATMEL ]
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AT89C5132  
5. Address Spaces  
The AT8xC5132 derivatives implement four different address spaces:  
Program/Code Memory  
Boot Memory  
Data Memory  
Special Function Registers (SFRs)  
5.0.1  
Code Memory  
The AT89C5132 implements 64K Bytes of on-chip program/code memory in Flash technology.  
The Flash memory increases ROM functionality by enabling in-circuit electrical erasure and pro-  
gramming. Thanks to the internal charge pump, the high voltage needed for programming or  
erasing Flash cells is generated on-chip using the standard VDD voltage. Thus, the AT89C5132  
can be programmed using only one voltage and allows in application software programming  
commonly known as IAP. Hardware programming mode is also available using specific pro-  
gramming tools.  
5.0.2  
5.0.3  
Boot Memory  
Data Memory  
The AT89C5132 implements 4K Bytes of on-chip boot memory provided in Flash technology.  
This boot memory is delivered programmed with a standard bootloader software allowing in sys-  
tem programming commonly known as ISP. It also contains some Application Programming  
Interfaces routines commonly known as API allowing user to develop his own bootloader.  
The AT89C5132 derivatives implement 2304 bytes of on-chip data RAM. This memory is divided  
in two separate areas:  
256 bytes of on-chip RAM memory (standard C51 memory).  
2048 bytes of on-chip expanded RAM memory (ERAM accessible via MOVX instructions).  
11  
4173E–USB–09/07