STA8090EXGA datasheet(32/42 Pages) STMICROELECTRONICS

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Electrical characteristics

STA8090EXGA

32/42

DS11733 Rev 3

Table 20 specifies the LDO2 voltage regulator characteristics.

Table 21 specifies the low voltage detection thresholds

Table 22 lists the DC characteristics for all the IO digital buffers except for the following input

buffers: STBYn (H9), STDBY_OUT (J10), WAKEUP0 (F11), WAKEUP1 (F10),

PMU_CFG (H10) and RSTn (G9).

Table 20. LDO2 DC characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

VOL2

Output voltage 1.6 V ≤ VINL2 ≤4.3 V; IOL2 ≤ 30 mA

1.08

1.20

1.32

IOL2

Output current

—

Table 21. Low voltage detection thresholds

Parameter

Min.

Typ.

Max.

Unit

Input LVD always on

and main VRs(1)

1. Not tested in production.

Upper voltage threshold

—

1.680

—

Lower voltage threshold

—

1.650

—

Output LVD always

on VR(1)

Upper voltage threshold

—

0.995

—

Lower voltage threshold

—

0.935

—

Output LVD main VR

(1.1 V)(1)

Upper voltage threshold @ VOL1/M = 1.2 V

—

1.142

—

Lower voltage threshold @ VOL1/M = 1.2 V

—

1.076

—

Upper voltage threshold @ VOL1/M = 1.1 V

—

1.048

—

Lower voltage threshold @ VOL1/M = 1.1 V

—

0.986

—

Output LVD main VR

(1.8 V)(1)

Upper voltage threshold @ VOL1/M = 1.8 V

—

1.645

—

Lower voltage threshold @ VOL1/M = 1.8 V

—

1.626

—

Table 22. I/O buffers DC characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIL(1)

1. Excludes oscillator inputs RTC_XTI and XTAL_IN. Refer to oscillator electrical specifications.

Logical input low level

voltage

VDDIO = 1.8 V

-0.3

—

0.3 * VDDIO

VDDIO = 3.3V

-0.3

—

0.8

VIH(1)

Logical input high level

voltage

VDDIO = 1.8 V

0.7 * VDDIO

—VDDIO + 0.3

VDDIO = 3.3V

2.0

—

VDDIO + 0.3

VHYST(2)

2. Apply to all digital inputs unless specified otherwise.

Schmitt-trigger hysteresis –

—

VOL

Low level output voltage

VDDIO = 1.8 V

—

0.4

VDDIO = 3.3V

—

0.4

VOH

High level output voltage

VDDIO = 1.8 V

VDDIO - 0.4

—

VDDIO = 3.3V

VDDIO - 0.4

—

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