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Revision 1.04

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AS1916 - AS1918

Datasheet - Pin Assignm ents

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 2. Pin Descriptions

Pin Number

Pin Name

Description

1

RESETN

MRN is pulled low, or the watchdog triggers a reset. This output signal remains low for the reset timeout period

after all supervised voltages exceed their reset threshold, or MRN goes low to high, or the watchdog triggers a

reset.

RESET

page 4) after all supervised voltages exceed their reset threshold, or MRN goes low to high, or the watchdog

triggers a reset.

2GND

Ground

3MRN

Active-Low Manual Reset Input. Pulling this pin low asserts a reset. This pin is connected to the internal 50k

Ω

page 4) after MRN goes high.

Note:

4WDI

4). The internal watchdog timer clears whenever a reset is a asserted or when WDI senses a rising or falling

edge.

Note:

To disable the watchdog feature, this pin must be unconnected or connected to a tri-state buffer output.

WDI must be low or unconnected (tristate) during the reset timeout period tRP, (see Figure 11 on page 8).

5VCC

Supervised Voltage Input. This pin serves as the supervised supply voltage input.

AS1916 - AS1918

2

GND

3

MRN

1

RESETN/RESET

4 WDI

5 VCC