AS3661 datasheet(6/87 Pages) AMSCO

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AS3661

Datasheet - P i n o u t

4 Pinout

4.1 Pin Assignment

Figure 2. Pin Assignments (Top View)

4.2 Pin Description

Table 1. Pin Description for AS3661

Pin Number

Pin Name

Description

LED1

LED1 Output. Current source from VCP.

LED2

LED2 Output. Current source from VCP.

VCP

Charge Pump output. make a short connection to capacitor CVCPOUT.

C2-

Charge Pump flying capacitor 2. make a short connection to capacitor CFLY2.

C2+

Charge Pump flying capacitor 2. make a short connection to capacitor CFLY2.

LED3

LED3 Output. Current source from VCP.

LED4

LED4 Output. Current source from VCP.

ASEL1

Digital input - I²C address select

C1-

Charge Pump flying capacitor 1. make a short connection to capacitor CFLY1.

C1+

Charge Pump flying capacitor 1. make a short connection to capacitor CFLY1.

LED5

LED5 Output. Current source from VCP.

LED6

LED6 Output. Current source from VCP.

ASEL0

Digital input - I²C address select

Enable. Active high digital input.

VBAT

Positive Power Supply Input

LED7

LED7 Output. Current source from VBAT.

LED8

LED8 Output. Current source from VBAT.

INT

Interrupt Output. Open drain digital output for microcontroller unit, leave

unconnected if not used.

CLK32K

Digital Clock Input. Connect a 32kHz signal; if this signal is not available, connect

this pin to GND.

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