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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB97C201 датащи(PDF) 14 Page - SMSC Corporation |
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USB97C201 датащи(HTML) 14 Page - SMSC Corporation |
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14 / 59 page  SMSC USB97C201 Page 14 Rev. 11-05-03 DATASHEET 6.0 FUNCTIONAL BLOCK DESCRIPTIONS 6.1 MCU The 64K memory map is as follows from the 8051's viewpoint: 6.1.1 MCU MEMORY MAP: CODE SPACE The 8051 has a single flat 64K Code space. External memory requires 80ns access times from Address to Data and less than 80ns output enable access times, assuming the use of the nMEMR signal as OE on the memory. Table 2 - MCU Code Memory Map 8051 ADDRESS CODE SPACE ACCESS 0x0700-0xFFFF Fixed Memory External Program Memory 0x0400-0x06FF 768 Bytes of Fixed 16k FLASH Page OR 768 Bytes of Internal SRAM for program execution (see bit 7 of the UTIL_CFG register for more information) External Program Memory OR Internal Program SRAM 0x0000-0x03FF Fixed Memory External Program Memory 8051 MCU External Code Address Space 0xFFFF Internal 768 Byte SRAM or External Memory 0x0000 0x0400 0x0700 FIGURE 1 - MCU TO EXTERNAL CODE SPACE MAP |
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