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SPC574K72E5 Datasheet(PDF) 45 Page - STMicroelectronics |
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SPC574K72E5 Datasheet(HTML) 45 Page - STMicroelectronics |
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45 / 127 page  DocID023601 Rev 5 45/127 SPC574Kxx Electrical characteristics 126 Note: No restrictions exist on reset signal slew rate apart from absolute maximum rating compliance. Table 21. Reset electrical characteristics Symbol Parameter Conditions Value(1) Unit Min Typ Max VIH SR P Input high level TTL (Schmitt trigger) — 2.0 — VDD_HV_IO +0.4 V VIL SR P Input low level TTL (Schmitt trigger) — –0.4 — 0.8 V VHYS CC C Input hysteresis TTL (Schmitt trigger) —275 — — mV VDD_POR CC D Minimum supply for strong pull-down activation —— — 1.2 V IOL_R CC P Strong pull-down current(2) Device under power-on reset VDD_HV_IO = VDD_POR, VOL = 0.35 * VDD_HV_IO 0.2 — — mA C Device under power-on reset 3.0 V < VDD_HV_IO < 5.5 V, VOL > 0.9 V 8— — mA |IWPU| CC P Weak pull-up current absolute value ESR0 pin VIN = 0.69 * VDD_HV_IO 23 — 65 µA C ESR0 pin VIN = 0.49 * VDD_HV_IO —— 82 |IWPD| CC P Weak pull-down current absolute value PORST pin VIN = 0.69 * VDD_HV_IO 50 — 130 µA CPORST pin VIN = 0.49 * VDD_HV_IO 40 — — WFRST SR P PORST and ESR0 input filtered pulse — — — 500 ns WNFRST SR P PORST and ESR0 input not filtered pulse — 2000 — — ns WFNMI SR P ESR1 input filtered pulse — — — 15 ns WNFNMI SR P ESR1 input not filtered pulse — 400 — — ns 1. An external 4.7 KOhm pull-up resistor is recommended to be used with the PORST and ESR0 pins for fast negation of the signals. 2. IOL_R applies to both PORST and ESR0: Strong pull-down is active on PHASE0 for PORST. Strong pull-down is active on PHASE0, PHASE1, PHASE2, and the beginning of PHASE3 for ESR0. PORST must be connected to an external power-on supply circuitry. Minimum requested circuitry is external pull-up to ensure device can exit reset. |
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