AS3715 datasheet(70/159 Pages) AMSOSRAM

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Page 69

[v1-03] 2015-Aug-10

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AS3715 − Detailed Description – System Functions

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.

Supervisor

All LDO’s, the DCDC step ups and DCDC step downs have an

integrated over-current protection.

An over-temperature protection of the chip is also integrated

which can be switched ON with the serial interface signal

temp_pmc_on (enabled by default; it is not recommended to

disable the over-temperature protection).

Temperature Supervision (Main Die)

The chip has two signals for the serial interface: ov_temp_110

and ov_temp_140. The flag ov_temp_110 is automatically reset

if the over-temperature condition is removed, whereas

ov_temp_140 has to be reset by the serial interface with the

signal rst_ov_temp_140.

If the flag ov_temp_140 is set, an automatic reset of the

complete chip is initiated. The chip will only start-up when the

temperature falls below the T110 level (including hysteresis).

The flag ov_temp_140 is not affected by this reset cycle allowing

the software to detect the reason for this unexpected

shutdown.

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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