SRC0 datasheet(13/48 Pages) STMICROELECTRONICS

Part #	SRC0

Description	Power-up duration determined primarily by push-button press

PDF	48 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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13 / 48 page

DocID026008 Rev 2

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SRC0

Operation

If the system is not responding and the system hangs, the PB and SR push-button can be

pressed simultaneously longer than tDEBOUNCE + tINT_Min + tSRD, and then

either the reset output RST is asserted for tREC and the processor is reset (valid

only for the device with option “RST asserted by long push”) – see Figure 18

or the power is disabled by EN or EN signal (valid only for the device with option

“EN deasserted by long push”) – see Figure 19

The tSRD is set by the external capacitor connected to the CSRD pin. SR input is monitored

for falling edge after power-up and must not be grounded permanently.

Standby

If the enable output is deasserted (i.e. EN is low or EN is high), the STM660x device enters

standby mode with low current consumption (see Table 5). In standby mode PB input is only

monitored for the falling edge. The external 1.5 V voltage reference is also disabled in

standby mode.

SRC0 Datasheet(PDF) 13 Page - STMicroelectronics