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PC87427 Datasheet(PDF) 28 Page - National Semiconductor (TI) |
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PC87427 Datasheet(HTML) 28 Page - National Semiconductor (TI) |
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28 / 46 page  2.0 Device Characteristics (Continued) www.national.com 28 Revision 1.0 Figure 5. Internal VSB Power-Up Reset - Ended by LRESET VDD Power-Up Reset Figure 6. Internal VDD Power-Up Reset Symbol Figure Description Reference Conditions Min1 1. Not tested. Guaranteed by design. Max1 tLRST 6 Minimum LRESET active time VDD power-up to end of LRESET 10ms tIRST 6 Internal Power-Up reset time VDD power-up to end of internal reset tLRST tIPLV 6 Internal strap pull-up resistors, valid time2 2. Active only during VDD Power-Up reset. Before end of internal reset tIRST tEPLV 6 External strap pull-down resistors, valid time Before end of internal reset tIRST VSB (Power) (Internal) tIRST VSBONmin tK32OSC t32KW + t32KVAL LRESET VSB Power-Up Reset (Internal) 32 KHz Domain tLRST Internal Straps tIPLV tEPLV (Pull-Up) (Pull-Down) External Straps Internal Straps tIPLV tEPLV (Pull-Up) (Pull-Down) External Straps VDD (Power) (Internal) LRESET VDD Power-Up Reset tIRST VDDONmin tLRST |
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