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AT89C51CC02CA-RATUM 数据表(PDF) 34 Page - ATMEL Corporation |
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AT89C51CC02CA-RATUM 数据表(HTML) 34 Page - ATMEL Corporation |
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34 / 156 page  34 AT/T89C51CC02 4126J–CAN–05/06 Program/Code Memory The T89C51CC02 implement 16K Bytes of on-chip program/code memory. The Flash memory increases EPROM and ROM functionality by in-circuit electrical era- sure and programming. Thanks to the internal charge pump, the high voltage needed for programming or erasing Flash cells is generated on-chip using the standard VDD volt- age. Thus, the Flash memory can be programmed using only one voltage and allows In- System Programming (ISP). Hardware programming mode is also available using spe- cific programming tool. Figure 12. Program/Code Memory Organization Flash Memory Architecture T89C51CC02 features two on-chip Flash memories: • Flash memory FM0: containing 16K Bytes of program memory (user space) organized into 128 bytes pages, • Flash memory FM1: 2K Bytes for boot loader and Application Programming Interfaces (API). The FM0 can be program by both parallel programming and Serial ISP whereas FM1 supports only parallel programming by programmers. The ISP mode is detailed in the ’In-System Programming’ section. All Read/Write access operations on Flash memory by user application are managed by a set of API described in the ’In-System Programming’ section. Figure 13. Flash Memory Architecture 0000h 16K Bytes 3FFFh Internal Flash 3FFFh 16K Bytes Flash Memory FM0 0000h Hardware Security (1 byte) Column Latches (128 Bytes) User Space Extra Row (128 Bytes) 2K Bytes Flash Memory FM1 Boot Space FFFFh F800h FM1 mapped between F800h and FFFFh when bit ENBOOT is set in AUXR1 register |
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