UCD3138ARJAT datasheet(28/87 Pages) TI1

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V33D

IRESET

3.3 V

VGH

VGL

VRES

Brown Out

tPOR

ADC Input Voltage

Actual ADC transfer function

Line connecting actual zero-scale point and actual full-scale point

Best fit line

INL best fit

INL end point

UCD3138A

SLUSC66C – MARCH 2015 – REVISED SEPTEMBER 2016

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Parametric Measurements Information

6.1

Power-On Reset (POR) and Brown-Out Reset (BOR)

Figure 6-1. Best Fit INL and End Point INL

Figure 6-2. Power-On Reset (POR) and Brown-Out Reset (BOR)

Table 6-1. Power-On Reset (POR) and Brown-Out Reset (BOR) Term Definitions

TERM

DEFINITION

VGH

V33D threshold where the internal power is declared good. The device exits the reset state when above this threshold.

VGL

V33D threshold where the internal power is declared bad. The device enters reset state when below this threshold.

Vres

V33D threshold where the internal reset signal is no longer valid. Below this threshold the device is in an indeterminate

state.

IReset

The internal reset signal. When low, the device is held in reset. This is equivalent to holding the device reset pin high.

tPOR

The time delay from when the VGH threshold exceeded to when the device exits the reset state.

Brown-out

The V33D voltage threshold at which the device sets the brown out status bit. An interrupt can be triggered if enabled.

UCD3138ARJAT Folha de dados(PDF) 28 Page - Texas Instruments