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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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SM5838AS 데이터시트(PDF) 6 Page - Nippon Precision Circuits Inc |
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SM5838AS 데이터시트(HTML) 6 Page - Nippon Precision Circuits Inc |
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6 / 14 page  SM5838AS NIPPON PRECISION CIRCUITS—6 FUNCTIONAL DESCRIPTION At power-ON reset, device operation can become irregular during the interval when the control circuits are being reset. After power-ON reset is released, this can take up to several 10s of ms in some cases. Write Reset Cycle, Read Reset Cycle After power-ON, the write address pointer and read address pointer positions are undefined. Accordingly, it is necessary to initialize the pointers using a write reset cycle and read reset cycle, respectively. A write reset cycle (read reset cycle) is valid when RW (RR) goes LOW for an interval that satisfies both the CLK rising edge setup time (tRS) and hold time (tRH). Note that a write reset cycle (read reset cycle) can occur simultaneously with a write cycle (read cycle). If the cycles are not simultaneous, then the write reset cycle (read reset cycle) is completed at the start of the next write cycle (read cycle). Write reset cycle Read reset cycle Note the even if a reset period (tRW, tRR) is zero length in the write reset and read reset cycles, the reset operation does take place. ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, CKW t RS t RS t RH t RH t RW t DS t DH t DH t CLK DIN (n-1) (n) (1) (0) RW CKW t DS t WE="L" n cycle reset cycle 0 cycle 1 cycle ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, RR CKW t RS t RS t RH t RH t CLK DOUT CKW t (n-1) (n) (1) (0) RE="L" , OE="L" (0) RR t A t A t A t A t OH t OH t OH t n cycle reset cycle 0 cycle 1 cycle |
유사한 부품 번호 - SM5838AS |
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유사한 설명 - SM5838AS |
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