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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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SH79F6488P/080PR bảng dữ liệu(PDF) 29 Page - SINOWEALTH Electronic Ltd |
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SH79F6488P/080PR bảng dữ liệu(HTML) 29 Page - SINOWEALTH Electronic Ltd |
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29 / 152 page  SH79F6488/SH79F6489 29 7.4 SSP Function The SH79F6488/SH79F6489 provides SSP (Self Sector Programming) function, each sector can be sector erased or programmed by the user’s code if the selected sector is not be protected. But once sector has been programmed, it cannot be reprogrammed before sector erase. The SH79F6488/SH79F6489 builds in a complex control flow to prevent the code from carelessly modification. If the dedicated conditions are not met (IB_CON1-5), the SSP will be terminated. 7.4.1 SSP Registers (1) Offset Register for Programming For Flash memory, one sector is 1024 bytes, register defined as below: Table 7.4 Offset Register for Programming F7H Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 XPAGE XPAGE.7 XPAGE.6 XPAGE.5 XPAGE.4 XPAGE.3 XPAGE.2 XPAGE.1 XPAGE.0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Reset Value (POR/WDT/LVR/PIN) 0 0 0 0 0 0 0 0 Bit Number Bit Mnemonic Description 7-2 XPAGE[7:2] Sector of the flash memory to be programmed, 000000---means sector 0, and so on 1-0 XPAGE[1:0] High Address of Offset of the flash memory sector to be programmed Table 7.5 Offset of Flash Memory for Programming FBH Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 IB_OFFSET IB_OFF SET.7 IB_OFF SET.6 IB_OFF SET.5 IB_OFF SET.4 IB_OFF SET.3 IB_OFF SET.2 IB_OFF SET.1 IB_OFF SET.0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Reset Value (POR/WDT/LVR/PIN) 0 0 0 0 0 0 0 0 Bit Number Bit Mnemonic Description 7-0 IB_OFFSET[7:0] Low Address of Offset of the flash memory sector to be programmed XPAGE[1:0] and IB_OFFSET[7:0] are total 10 bits, stored all sectors within the 1024 bytes offset. For EEPROM-like memory, one sector is 256 bytes, total 8 sectors, register defined as below: Table 7.6 Offset Register for Programming F7H Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 XPAGE XPAGE.7 XPAGE.6 XPAGE.5 XPAGE.4 XPAGE.3 XPAGE.2 XPAGE.1 XPAGE.0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Reset Value (POR/WDT/LVR/PIN) 0 0 0 0 0 0 0 0 Bit Number Bit Mnemonic Description 7-3 XPAGE[7:3] Reserved 2-0 XPAGE[2:0] Sector of the flash memory to be programmed, 000: sector0 001: sector1 010: sector2 011: sector3 100: sector4 101: sector5 110: sector6 111: sector7 |
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