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STK14C88-NF35ITR Arkusz danych(PDF) 9 Page - Cypress Semiconductor |
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STK14C88-NF35ITR Arkusz danych(HTML) 9 Page - Cypress Semiconductor |
9 / 20 page STK14C88 Document Number: 001-52038 Rev. *C Page 9 of 20 AutoStore/Power up RECALL NO. Symbols Parameter STK14C88 Unit Notes Standard Alt. Min Max 27 tRESTORE Power up RECALL Duration – 550 s15 28 tSTORE tHLHZ STORE Cycle Duration – 10 ms 13, 16 29 tVSBL Low Voltage Trigger (VSWITCH) to HSB Low – 300 ns 11 30 tDELAY tBLQZ Time Allowed to Complete SRAM Cycle 1– s13 31 VSWITCH Low Voltage Trigger Level 4.0 4.5 V – 32 VRESET Low Voltage Reset Level – 3.6 V – Figure 9. AutoStore/POWER UP RECALL 31 tDELAY 30 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 AutoStore HSB W 29 tSTORE 28 tRESTORE POWER UP RECALL 31 VSWITCH 27 VRESET VCC DQ (DATA OUT) Notes 15. tRESTORE starts from the time VCC rises above VSWITCH. 16. HSB is asserted low for 1s when VCAP drops through VSWITCH. If an SRAM write has not taken place since the last nonvolatile cycle, HSB is released and no STORE takes place. [+] Feedback |
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