STSAFE-A110 datasheet(26/36 Pages) STMICROELECTRONICS

Part #	STSAFE-A110

Description	Authentication, state-of-the-art security for peripherals and IoT devices

PDF	36 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Electrical characteristics

STSAFE-A110

26/36

DS13039 Rev 1

It is recommended to use an application that is able to manage the RESET pin through a

host GPIO to force reset upon alarm detection.

5.2.3

Reset pin (external reset)

The circuit is in reset state when the Reset signal available on the RESET pin is at logical

level ‘0’. If this signal is low for less than tWL, it is not taken into account.

When the RESET pin is floating, an external reset is not available and the device will remain

in a Reset state as the pin is connected to an internal weak pull-down.

When pin VCC is tied high, if the RESET pin switches from high to low and then to high

again, a warm reset occurs. For more information, refer to Figure 15: Warm reset sequence

on page 26.

5.2.4

Power-on and reset sequence

Figure 14. Power-on and reset sequence

Figure 15. Warm reset sequence

Table 4. Power-on and reset sequence timings

Name

Description

Conditions

Min.

Typ.

Max.

Units

tHL

Minimum time before de-asserting

RESET after power-up

-0

µs

SVCC

VCC rising slope (from 10% to 90%

of nominal value)

0.05

V/µs

STSAFE-A110 Datasheet(PDF) 26 Page - STMicroelectronics