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T89C5115-RATIM 数据表(PDF) 29 Page - ATMEL Corporation |
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T89C5115-RATIM 数据表(HTML) 29 Page - ATMEL Corporation |
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29 / 105 page ![]() 29 T89C5115 4128A–8051–04/02 Program/Code Memory The T89C5115 implement 16-KB 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 commonly known as ISP. Hardware programming mode is also available using specific programming tool. Figure 10. Program/Code Memory Organization Flash Memory Architecture T89C5115 features two on-chip flash memories: • Flash memory FM0: containing 16-KB of program memory (user space) organized into pages 128 bytes • Flash memory FM1: 2K Bytes for boot loader and Application Programming Interfaces (API). The FM0 can be program by both parallel programming and Serial In-System Program- ming (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 11. Flash Memory Architecture 0000h 16-KB 3FFFh internal Flash 3FFFh 16-KB 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 FFFFh and F800h when bit ENBOOT is set in AUXR1 register |
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