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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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FS98O21 датащи(PDF) 21 Page - Fortune Semiconductor Corp. |
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FS98O21 датащи(HTML) 21 Page - Fortune Semiconductor Corp. |
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21 / 136 page  FS98O21 Rev. 1.7 21/136 3. Memory Organization Program Memory Structure FS98O21 has an 11bits Program Counter which is capable of addressing a 2k x 16bits program memory space and a 6 level depth 11bits Stack Register. The Start up/Reset Vector is at 0000h. When FS98O21 is started or its program is reset, the Program Counter will point to Reset Vector. The Interrupt Vector is at 0004h. No matter what ISR is processed, the Program Counter will point to Interrupt Vector. Please see Figure 3-1. P rogram C onter S tack L evel 1 S tack L evel 2 S tack L evel 3 S tack L evel 4 R eset V ector Interrupt V ector 0000h 0004h 07FF h S tack L evel 5 S tack L evel 6 Figure 3-1 FS98O21 program memory structure Data Memory Structure FS98O21 has a 256 byte SRAM for Data Memory. The data memory is partitioned into three parts. The area with address 00h~07h is reserved for system special registers, such as indirect address, indirect address pointer, status register, working register, interrupt flag, interrupt control register. The address 08h~7Fh areas are peripheral special registers, such as I/O ports, timer, ADC, signal conditional network control register, LCD driver. The address 80h~0FFh areas are general data memory. Please see Table 3-1. Table 3-1 FS98O21 Data memory structure Start Address End Address Data Memory 00h 07h System Special Registers 08h 7Fh Peripheral Special Registers 080h 0FFh General Data Memory |
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