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ZAMC4100 датащи(PDF) 25 Page - Renesas Technology Corp |
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ZAMC4100 датащи(HTML) 25 Page - Renesas Technology Corp |
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25 / 156 page ![]() ZAMC4100 Datasheet © 2016 Integrated Device Technology, Inc. 25 January 26, 2016 1.3.4. System Power-up Timing Refer to Figure 1.3 and Table 1.17 for the definitions of the power-up and reset timing parameters. Table 1.17 System Power-up and Reset Timing Parameters Parameter Symbol Min. Typ. Max. Unit Power-on-reset (POR) hold time tHDPOR 10 - 80 µs Power-up timer delay tPWRT 0.32 0.78 1.24 ms MCU supply check time 1) tMSC 1.1 1.66 2.5 ms Charge pump voltage settling time 2) tCP_STL - - 2 ms MCU reset pulse duration generated by the watchdog timer (WDT) 3) tMCU_RST - 8 - µs System reset pulse duration generated by WDT tSYS_RST 0.4 0.95 1.5 ms 1) Time window in which the valid flags for both MCU supplies are expected. For more information, refer to section 3.1. 2) The charge pump is considered as settled when the ZAMC4100 supply voltage is in the nominal operating range specified by parameter VSUP (see Table 1.4). 3) Parameters calculated for the typical value of OSCL frequency. Figure 1.3 ZAMC4100 System Power-Up Sequence porb PORHYST Vfall Vrise rstn VDDE TYP tPWRT t t t tHDPOR tHDPOR Analog Circuitry SETTLING STABLE STABLE SETTLING UNSUP tPWRT t Charge Pump SUPLIED SETTLING STABLE UNSUP t SUPPLIED SETTLING STABLE tCP_STL PORTH tCP_STL |
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