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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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PSD833F2 데이터시트(PDF) 46 Page - STMicroelectronics |
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PSD833F2 데이터시트(HTML) 46 Page - STMicroelectronics |
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46 / 128 page  Page register PSD8XXFX 46/128 Doc ID 7833 Rev 7 13 Page register The 8-bit Page register increases the addressing capability of the MCU by a factor of up to 256. The contents of the register can also be read by the MCU. The outputs of the Page register (PGR0-PGR7) are inputs to the DPLD decoder and can be included in the Sector Select (FS0-FS7, CSBOOT0-CSBOOT3), and SRAM Select (RS0) equations. If memory paging is not needed, or if not all 8 page register bits are needed for memory paging, then these bits may be used in the CPLD for general logic. See Application Note AN1154. Figure 11 shows the Page register. The eight flip-flops in the register are connected to the internal data bus D0-D7. The MCU can write to or read from the Page register. The Page register can be accessed at address location CSIOP + E0h. Figure 11. Page register RESET D 0-D 7 R/W D0 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 D1 D2 D3 D4 D5 D6 D7 PAGE REGISTER PGR0 PGR1 PGR2 PGR3 DPLD AND CPLD INTERNAL SELECTS AND LOGIC PLD PGR4 PGR5 PGR6 PGR7 AI02871B |
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