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AS621x

Pin Assignment

Datasheet

• PUBLIC

DS000677

• v4-00 • 2022-May-17

36

│ 7

Pin Number

Pin Name

Pin Type(1)

Description

A3

SCL

DI_S

Serial Interface Clock

B1

VDD

S

Positive Supply Voltage

B2

ADD0

DI_S

Address select 0

B3

SDA

DIO_SOD

Serial Interface Data

(1)

Explanation of abbreviations:

S

Supply

DI_S

Digital Schmitt Trigger Input

DIO_SOD

Digital Schmitt Trigger Input / Open Drain Output

In Figure 5 the pins of AS621x are described. External pull up resistors (to VDD) are necessary for the

pins

“SDA” and “SCL”.

The pin “ADD0” must not be left unconnected (refer to section 6.3.3 for further details).

The pin “ALERT/ADD1” is used to set the I²C address and has the additional functionality of triggering

an interrupt. In case this ALERT functionality is used, a pull up resistor (to VDD) is necessary. If this

functionality is not used it must be connected to VSS or SCL, depending on the selected I²C address

(refer to section 6.3.3 for further details). It must not be left unconnected.