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SM5906AF Datasheet(PDF) 9 Page - Nippon Precision Circuits Inc |
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SM5906AF Datasheet(HTML) 9 Page - Nippon Precision Circuits Inc |
9 / 30 page NIPPON PRECISION CIRCUITS-9 SM5906AF Parameter Symbol Condition Rating Unit Min Typ Max ZSCK pulsewidth tSCOW 15 pF load 1/96fs ZSCK pulse cycle tSCOY 15 pF load 1/48fs ZSRDATA, ZLRCK, ZC2PO tDHL 15 pF load 0 60 ns output delay time tDLH 15 pF load 0 60 ns DRAM access timing (NRAS, NCAS, NWE, A0 to A10, D0 to D3) Parameter Symbol Condition Rating Unit Min Typ Max NRAS pulsewidth tRASL 15 pF load 4 tCY(note) tRASH 15 pF load 2 tCY NRAS falling edge to NCAS falling edge tRCD 15 pF load 2 tCY NCAS pulsewidth tCASH 15 pF load 4 tCY tCASL 15 pF load 2 tCY NRAS Setup time tRADS 15 pF load 1 tCY falling edge to address Hold time tRADH 15 pF load 1 tCY NCAS Setup time tCADS 15 pF load 1 tCY falling edge to address Hold time tCADH 15 pF load 2 tCY NCAS Setup time tCWDS 15 pF load 3 tCY falling edge to data write Hold time tCWDH 15 pF load 2 tCY NCAS Input setup tCRDS 40 ns rising edge to data read Input hold tCRDH 0ns NWE pulsewidth tWEL 15 pF load 5 tCY NWE falling edge to NCAS falling edge tWCS 15 pF load 3 tCY Refresh cycle 4M CD-DA MODE 3.0 ms (fs = 44.1 kHz playback) DRAM VCD MODE 2.6 ms tREF × 1 SVC MODE 1.3 ms Memory system ON 16M CD-DA MODE 5.9 ms Read sequence operation DRAM VCD MODE 5.2 ms (RDEN=H) × 1 SVC MODE 2.6 ms Note. tCY is the system clock (CLK) input (384fs) cycle time. tCY = 59 ns when fs = 44.1 kHz ZSCK ZSRDATA 0.5VDD DLH ZLRCK 0.5VDD DHL ttDLH SCOW t tSCOW t SCOY t ZC2PO Serial output (ZSRDATA, ZLRCK, ZSCK ZC2PO pins) |
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