AS3608 datasheet(28/68 Pages) AMSCO

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AS3608 2v2

Data Sheet - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s

9.4 Interrupt Generation

All interrupt sources can get enabled or disabled by corresponding bits in the 4 IRQ-bytes. By default no interrupt source is enabled.

The XIRQ pin can be configured to operate in push/pull (2 different driver strengths), open-drain mode or to be tri-state. The signal polarity can

be defined as active-low or active-high. Default state is open-drain active-low.

9.4.1 IRQ Source Interpretation

There are 3 different modules to process interrupt sources:

LEVEL. The IRQ output is kept active as long as the interrupt source is present and this IRQ-Bit is enabled.

EDGE. The IRQ gets active with a high going edge of this source. The IRQ stays active until the corresponding IRQ-Register gets read.

STATUS CHANGE. The IRQ gets active when the source-state changes. The change bit and the status can be read to notice which interrupt

was the source. The IRQ stays active until the corresponding interrupt register gets read.De-bouncer

There is a de-bounce function implemented, a de-bounce time of 3ms is selected per default in the IRQ_ENRD_3 register (26h).

9.4.2 Interrupt Sources

These IRQ events will activate the XIRQ pin:

10bit ADC end of conversion

Charger end of charge, connect/disconnect, no battery

Battery temperature high (at 45ºC or 50ºC with 100/10k

Ω NTC)

Junction temperature high

Battery low (Brown-out voltage reached)

Power-up key (pin PWRUP) pressed

Current sink low voltage

Power rail monitor: over-voltage CVDD1, CVDD2, CVDD3

Power rail monitor: under-voltage CVDD1, CVDD2, CVDD3, VDD27

AS3608 Datasheet(PDF) 28 Page - ams AG