SPC572L64F2 datasheet(37/112 Pages) STMICROELECTRONICS

Part #	SPC572L64F2

Description	32-bit Power Architecture® based MCU for automotive powertrain applications

PDF	112 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

37 / 112 page

DocID027866 Rev 5

37/112

SPC572Lx

Electrical characteristics

111

Figure 8. Start-up reset requirements

Figure 9 describes device behavior depending on supply signal on PORST:

PORST low pulse amplitude is too low—it is filtered by input buffer hysteresis. Device

remains in current state.

PORST low pulse duration is too short—it is filtered by a low pass filter. Device remains

in current state.

PORST low pulse generates a reset:

PORST low but initially filtered during at least WFRST. Device remains initially in

current state.

PORST potentially filtered until WNFRST. Device state is unknown: it may either be

reset or remains in current state depending on other factors (temperature, voltage,

device).

PORST asserted for longer than WNFRST. Device is under reset.

VIL

VDD

VDDMIN

PORST

VIH

device start-up phase

VDD_POR

PORST undriven.

Device reset by

internal power-on

reset.

PORST driven low by

internal power-on reset.

Device reset forced by

external circuitry.

SPC572L64F2 Datasheet(PDF) 37 Page - STMicroelectronics