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SST85LD0256 Datasheet(PDF) 67 Page - Silicon Storage Technology, Inc |
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SST85LD0256 Datasheet(HTML) 67 Page - Silicon Storage Technology, Inc |
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67 / 73 page ![]() Advance Information NANDrive SST85LD0128 / SST85LD0256 / SST85LD0512 ©2007 Silicon Storage Technology, Inc. S71319-03-000 2/07 67 FIGURE 13-7: Host Terminates a Multi-word DMA Data Transfer 13.2.4 External Flash Media Bus I/O Timing Specifications Note: All AC specifications are guaranteed by design. TABLE 13-10: External Flash Media Bus Timing Parameters Symbol Parameter Min Max Units TCLS FCLE Setup Time 20 - ns TCLH FCLE Hold Time 40 - ns TCS FCE# Setup Time 40 - ns TCH FCE# Hold Time for Command/Data Write Cycle 40 - ns TCHR FCE# Hold Time for Sequential Read Last Cycle - 40 ns TWP FWE# Pulse Width 20 - ns TWH FWE# High Hold Time 20 - ns TWC Write Cycle Time 40 - ns TALS FALE Setup Time 20 - ns TALH FALE Hold Time 40 - ns TDS FAD[15:0] Setup Time 20 - ns TDH FAD[15:0] Hold Time 20 - ns TRP FRE# Pulse Width 20 - ns TRR Ready to FRE# Low 40 - ns TREA FRE# Data Setup Access Time 20 - ns TRC Read Cycle Time 40 - ns TREH FRE# High Hold Time 30 - ns TRHZ FRE# High to Data Hi-Z 5 - ns T13-10.0 1319 Write DQ15-0 Read DQ15-0 IORD#/IOWR DMACK# DMARQ CS1FX#/CS3FX# 1319 F08.0 T0 TD TK TE TN TZ TJ TF TH TG Note: 1. To terminate the transmission of a data burst, the host should negate DMACK# within the specified time after a IORD# or IOWR# pulse. No further IORD# or IOWR# pulses shall be asserted for this burst. 2. If the device is able to continue the transfer of data, the device may leave DMARQ asserted and wait for the host to reassert DMACK# or may negate DMARQ at any time after detecting that DMACK# has been negated. |
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