AS3715 datasheet(69/160 Pages) AMSCO

69 / 160 page

ams Datasheet, Confidential

Page 69

[v1-00] 2014-Sep-10

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AS3715 − Detailed Description – System Functions

900mA/2.5A Charger Input

With this function the charger input current limiter can be set

to 900mA or 2.5A (high power USB limit or full current enabled).

The gpioX_mode should be set to input.

Charging Enable Input

When pulling the GPIO to high the charger is being enabled and

vice versa. This is to enable the charger without I²C

communication. The gpioX_mode should be set to input.

PWM Output

The GPIO block includes an internal programmable PWM

generator (can be connected to any of the GPIO outputs). Its

timing is defined by pwm_h_time, pwm_l_time and pwm_div.

The gpioX_mode should be set to output.

Parameter

Figure 71:

GPIO Pin Characteristics

GPIO Pin Characteristics: Shows the key electrical parameter of the GPIO pins. VSUP=2.7 to 5.5V; Tamb = -20 to

+70°C; unless otherwise mentioned.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOL

Low level output voltage

IOL=+1mA; digital

output

–0.3

+0.4

VOH

High level output voltage

IOH=–1mA; digital

push-pull output

0.8

VSUP_G

PIO

VSUP_G

PIO

VIL

Low level input voltage

Digital input

–0.3

0.4

VIH

High level input voltage

Digital input

1.4

VSUP_G

PIO

ILEAKAGE

Leakage current

High impedance

μA

Rpull-up

Pull-up resistance

If enabled;

VSUP_GPIO=3.6V

300

kΩ

Rpull-down

Pull-down resistance

If enabled;

VSUP_GPIO=3.6V

300

kΩ

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