WM8593 datasheet(16/98 Pages) WOLFSON

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WM8593

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PP Rev 1.0 January 2007

POWER ON RESET (POR)

Figure 1 Power Supply Timing Requirements

Test Conditions

DVDD = 3.3V, AVDD1 = 3.3V, AVDD2 = 9V DGND = AGND1 = AGND2 = 0V, TA = +25

oC, T

A_max = +125

oC, T

A_min = -25

AVDD1max = DVDDmax = 3.63V, AVDD1min = DVDDmim= 2.97V

AVDD2max = 9.9V, AVDD2min = 8.1V

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Power Supply Input Timing Information

VDD level to POR defined

(DVDD rising)

Vpord

Measured from DGND

0.27

0.36

0.60

VDD level to POR rising

edge (DVDD rising)

Vpord_hi

Measured from DGND

1.34

1.88

2.32

VDD level to POR falling

edge (DVDD falling)

Vpord_lo

Measured from DGND

1.32

1.86

2.30

VDD level to POR rising

edge (AVDD1 rising)

Vpor1_hi

Measured from DGND

1.65

1.68

1.85

VDD level to POR falling

edge (AVDD1 falling)

Vpor1_lo

Measured from DGND

1.63

1.65

1.83

VDD level to POR rising

edge (AVDD2 rising)

Vpor2_hi

Measured from DGND

1.80

1.86

2.04

VDD level to POR falling

edge (AVDD2 falling)

Vpor2_lo

Measured from DGND

1.76

1.8

2.02

Table 6 Power on Reset

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