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AT85C5122D-RDRUM 数据表(PDF) 27 Page - ATMEL Corporation |
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AT85C5122D-RDRUM 数据表(HTML) 27 Page - ATMEL Corporation |
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27 / 208 page  27 AT83R5122, AT8xC5122/23 4202F–SCR–07/2008 Figure 12. AT8xC5122’s CRAM and E2PROM Versions Reset@ <0000> EA = 0 PROGRAM EXTERNAL PROGRAM PSEN Reset@ 0000 7FFF 8000 FFFF 32K ROM 32K CRAM <F800> EA = 1 INTERNAL INTERNAL 32K PROGRAM EXTERNAL ENBOOT=1 ENBOOT=0 8000 FFFF MEMORY On-chip 512 bytes XRAM 0000 01FF FFFF RD WR DATA MEMORY (Read / Write) 0000 EXTRAM=0 EXTRAM=1 EXTERNAL EXTERNAL XRAM XRAM 01FF 0200 PSEN Roll-Over Roll-Over MEMORY MEMORY 32K INTERNAL E2PROM (Read/Write) (Read Only) (Read/Write) SFR Space 80 FF 00 7F 80 FF Upper 128 Bytes RAM Lower 128 Bytes RAM On-Chip 256 bytes RAM Direct Addressing Indirect Addressing 512 Bytes INTERNAL E2PROM 01FF 0000 Optional FFFF 8000 (applicable only to CRAM version) (E2PROM version) |
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