User's Guide

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

For example:

1- Let us assume you need to drive the ON/OFF# pad with a totem pole output of a

+1.8/5 V microcontroller (uP_OUT1):

NOTE:

NOTE: NOTE:

NOTE:

To check if the UC864-E-AUTO / AWS-AUTO has powered on, the hardware line

PWRMON must be monitored. When PWRMON goes high, the module has powered

on.

NOTE:

NOTE: NOTE:

NOTE:

Do not use any pull up resistor on the ON/OFF# line, it is internally pulled up. Using

pull up resistor may bring to latch up problems on the UC864-E-AUTO / AWS-AUTO

power regulator and improper power on/off of the module. The line ON/OFF# must

be connected only in open collector configuration.

NOTE:

NOTE: NOTE:

NOTE:

In this document all the lines are inverted. Active low signals are labeled with a name

that ends with a "#" or with a bar over the name.

NOTE:

NOTE: NOTE:

NOTE:

UC864-E-AUTO / AWS-AUTO

turns fully on also by supplying power to the Charge pad

(provided there is a battery on the VBATT pads).

10k

1.8 / 5V