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STK12C68-WF35 Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers |
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STK12C68-WF35 Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers |
6 / 13 page STK12C68 October 2003 6 Document Control # ML0008 rev 0.4 AutoStore™/POWER-UP RECALL (VCC = 5.0V ± 10%)e Note s: tRESTORE starts from the time VCC rises above VSWITCH. Note t: HSB is asserted low for 1 µs when VCAP drops through VSWITCH. If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB will be released and no STORE will take place. AutoStore™/POWER-UP RECALL NO. SYMBOLS PARAMETER STK12C68 UNITS NOTES Standard Alternate MIN MAX 27 tRESTORE Power-up RECALL Duration 550 µss 28 tSTORE tHLHZ STORE Cycle Duration 10 ms p, q, t 29 tVSBL Low Voltage Trigger (VSWITCH) to HSB Low 300 ns l 30 tDELAY tBLQZ Time Allowed to Complete SRAM Cycle 1 µsp 31 VSWITCH Low Voltage Trigger Level 4.0 4.5 V 32 VRESET Low Voltage Reset Level 3.9 V 30 tDELAY 29 tVSBL POWER-UP RECALL BROWN OUT NO STORE (NO SRAM WRITES) NO RECALL (VCC DID NOT GO BELOW VRESET) BROWN OUT AutoStore™ NO RECALL (VCC DID NOT GO BELOW VRESET) BROWN OUT AutoStore™ RECALL WHEN VCC RETURNS ABOVE VSWITCH AutoStoreTM HSB W DQ (DATA OUT) 28 tSTORE 27 tRESTORE POWER-UP RECALL 31 VSWITCH 32 VRESET VCC |
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