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W79L632A Datasheet(PDF) 8 Page - Winbond |
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W79L632A Datasheet(HTML) 8 Page - Winbond |
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8 / 78 page  W79E632A/W79L632A - 8 - 0000h FFFFh 80h 7Fh 00h 64 K Bytes External Data Memory Indirect Addressing RAM Direct & Indirect Addressing RAM SFRs Direct Addressing FFh 64K Bytes On-chip Program Memory 1K Bytes On-chip SRAM 0000h 03FFh APFlash0 64K Bytes On-chip Program Memory APFlash1 0FFFh 4K Bytes LDFlash Figure 1. Memory Map Special Function Registers The W79E(L)632 uses Special Function Registers (SFRs) to control and monitor peripherals and their Modes. The SFRs reside in the register locations 80-FFh and are accessed by direct addressing only. Some of the SFRs are bit addressable. This is very useful in cases where one wishes to modify a particular bit without changing the others. The SFRs that are bit addressable are those whose addresses end in 0 or 8. The W79E(L)632 contains all the SFRs present in the standard 8052. However, some additional SFRs have been added. In some cases unused bits in the original 8052 have been given new functions. The list of SFRs is as follows. The table is condensed with eight locations per row. Empty locations indicate that there are no registers at these addresses. When a bit or register is not implemented, it will read high. |
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