AS3630 datasheet(38/72 Pages) AMSCO

38 / 72 page

AS3630 – 38

8A Supercap Flash Driver

Supply Undervoltage Protection

If the voltage on the pin VIN (=battery voltage) is or falls below

VUVLO, the AS3630 is kept in shutdown state and all registers are

set to their default state.

Interrupt Output

INT is an open drain, active low output. The internal circuit to

control this pin is shown in Figure 35.

Figure AS3630 – 35:

Interrupts Processing

Once an interrupt event occurs (e.g. end of charge of Supercap;

detailed description of interrupt events in “AS3630 Torch

Operation with Duration Synchronized to STROBE Input ” on

page 35, the interrupt flip flop is set (register status_eoc=1). If

the interrupt mask is high (register status_eoc_mask=1), the

output INT is pulled to low signalizing an interrupt condition.

All 8 interrupt flip flops are automatically cleared upon readout

of register Fault / Status.

ADC

The ADC is programmed by setting the ADC channel in register

ADC_channel (page 52) and the ADC conversion is performed

after setting ADC_convert (page 52).

The actual timing when the ADC conversion is started / finished

is programmed with ADC_convert as shown in Figure 36:

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