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M750000004 데이터시트(PDF) 123 Page - SPANSION |
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M750000004 데이터시트(HTML) 123 Page - SPANSION |
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123 / 129 page ![]() January 14, 2004 Am75PDL191CHHa/Am75PDL193CHHa 121 ADV ANCE I N FO RMAT I O N PSRAM AC CHARACTERISTICS Figure 28. Standby Mode State Machines Standby Mode Characteristic AC Characteristics (V CC= 2.7-3.1 V, TA= -40 to 85°C) t WP (min)= 70 ns for continuous write operation over 50 times. CS2s =V IL CS#1s =V IH CS #1=V IL, UB or/and LB=VIL Power On Initial State (Wait 200 µs) Active Standby Mode Deep Power Down Mode CS2s =V IH CS#1s=V IH and CS2s =VIH CS2s =V IL CS#1s =V IH , CS2s =VIH CS2s =V IH Power Mode Memory Cell Data Standby Current ( µA) Wait Time ( µs) Standby Valid 80 0 Deep Power Down Invalid 20 200 Parameter List Symbol Speed Bins Units 70 ns Min Max Read Read Cycle Time t RC 70 - ns Address Access Time t AA -70 ns Chip Select to Output t CO -70 ns Output Enable to Valid Output t OE -35 ns UB#, LB# Access Time t BA -70 ns Chip Select to Low-Z Output t LZ 10 - ns UB#, LB# Enable to Low-Z Output t BLZ 10 - ns Output Enable to Low-Z Output t OLZ 5- ns Chip Disable to High-Z Output t HZ 025 ns UB#, LB# Disable to High-Z Output t BHZ 025 ns Output Disable to High-Z Output t OHZ 025 ns Output Hold from Address Change t OH 5- ns Write Write Cycle Time t WC 70 - ns Chip Select to End of Write t CW 60 - ns Address Set-up Time t AS 0- ns Address Valid to End of Write t AW 60 - ns UB#, LB# Valid to End of Write t BW 60 - ns Write Pulse Width t WP 55 (Note 1) -ns Write Recovery Time t WR 0- ns Write to Output High-Z t WHZ 025 ns Data to Write Time Overlap t DW 30 - ns Data Hold from Write Time t DH 0- ns End Write to Output Low-Z t OW 5- ns |
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