AS3682

Data Sheet

Power-On Reset

www.austriamicrosystems.com

Revision 2.21

32 - 43

11.7 Power-On Reset

The internal reset is controlled by two inputs:

!

!

If either of these voltages is lower than their limit, an internal reset is forced.

register contents are set to default.

Access by serial interface is possible once the reset thresholds are exceeded.

down).

11.8 Temperature Supervision

An integrated temperature sensor provides over-temperature protection for the AS3682. This sensor generates a flag

Overtemp_control

(page 32) is set to 1.

The ov_temp flag will only be reset (by the circuit when the temperature has reached operating condition again) after

the software has written a 1 and then a 0 to bit rst_ov_temp (page 32).

Bit ov_temp_on activates temperature supervision.

Table 32. Reset Control

Reset Control

Register State (All Registers)

Undefined

Undefined

Default

Default

Access by serial interface possible.

Table 33. Overtemperature Bit Definitions

Addr: 0E

Overtemp_control

This register reads and resets the overtemperature flag.

Bit

Bit Name

Default

Access

Description

0

ov_temp_on

1R/W

Activates/deactivates device temperature supervision.

0 = Temperature supervision is disabled. No current source

will be switched off if the device temperature exceeds the

1 = Temperature supervision is enabled.

1

ov_temp

NA

R

1 = Indicates that the over-temperature rising threshold

to use bit rst_ov_temp. Bit ov_temp is only active if

temperature supervision is activated.

2

rst_ov_temp

NA

R/W

The ov_temp flag is cleared by first setting this bit to 1, and

then setting this bit to 0. Bit rst_ov_temp is only active if

temperature supervision is activated.

7:3

N/A