Pin descriptions

SR1

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DocID026048 Rev 2

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Pin descriptions

3.1

This pin is used to provide power to the Smart Reset device. A 0.1 µF ceramic decoupling

SR1 device as possible.

3.2

Power-up sequence

sequence must avoid meeting the test mode entry condition to avoid inadvertent test mode

domain), the device will then safely start into normal operating mode, with RST output

inactive (in High-Z mode for open-drain option).

3.3

This is the ground pin for the device.

3.4

Smart Reset input (SR)

Push-button Smart Reset input, active low with optional pull-up resistor. SR input needs to

(see Section 1: Description on page 3 for more information).

3.5

Reset output (RST)

RST is active low or active high, open drain or push-pull reset output with optional internal

pull-up resistor.

Output reset pulse width is optional as follows:



Neither fixed nor minimum output reset pulse duration (releasing the push-button while

reset output is active, causes the output to de-assert)



Reset input state.

3.6

RST output undervoltage behavior (for open-drain option)

and input were inactive.