ACS8525AP datasheet(97/112 Pages) SEMTECH

97 / 112 page

ACS8525A LC/P

ADVANCED COMMS & SENSING

FINAL

DATASHEET

Revision 1.00/September 2007 © Semtech Corp.

Page 97

www.semtech.com

2Interrupt GPO_en

(Interrupt General Purpose Output). If the interrupt

output pin is not required, then setting this bit will

allow the pin to be used as a general purpose

output. The pin will be driven to the state of the

polarity control bit, int_polarity.

Interrupt output pin used for interrupts.

Interrupt output pin used for GPO purpose.

1Interrupt tristate_en

The interrupt can be configured to be either

connected directly to a processor, or wired together

with other sources.

Interrupt pin always driven when inactive.

Interrupt pin only driven when active, high-

impedance when inactive.

0Interrupt int_polarity

The interrupt pin can be configured to be active

High or Low.

Active Low - pin driven Low to indicate active

interrupt.

Active High - pin driven High to indicate active

interrupt.

Address (hex):

Description

(R/W) Protection register to

protect against erroneous

software writes.

Default Value

1000 0101

Bit 7Bit 6

Bit 5Bit 4

Bit 3

Bit 2Bit 1Bit 0

protection_value

Bit No.

Description

Bit Value

Value Description

[7:0]

protection_value

This register can be used to ensure that the

software writes a specific value to this register,

before being able to modify any other register in the

device. Three modes of protection are offered,

(i) protected,

(ii) fully unprotected,

(iii) single unprotected.

When protected, no other register in the device can

be written to. When fully unprotected, any writeable

unprotected, only one register can be written before

the device automatically re-protects itself.

Note...This register cannot be protected.

0000 0000 –

1000 0100

1000 0101

1000 0110

1000 0111 –

1111 1111

Protected mode.

Fully unprotected.

Single unprotected.

Protected mode.

Address (hex):

7D (cont...)

Description

(R/W) Register to configure

interrupt output.

Default Value

0000 0010

Bit 7Bit 6

Bit 5Bit 4

Bit 3

Bit 2Bit 1Bit 0

Interrupt

GPO_en

Interrupt

tristate_en

Interrupt

int_polarity

Bit No.

Description

Bit Value

Value Description

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