AS8221 datasheet(36/42 Pages) AMSCO

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AS8221

Datasheet - Appendi x

www.austriamicrosystems.com/flexray/AS8221

Revision 1.7

36 - 42

ILWUL

Low level input current on local WAKE pin

ILWUH

High level input current on local WAKE pin

tLWUFilter

Local wake filter time

dWakePulseFilter

Wake pulse filter time (spike rejection)

VBAT operating range

VBAT = +6.5 to + 50V

VBAT for WU detector Battery voltage required for wake-up detector

operation

Supply Voltage Monitor

VBATTHH

VBAT undervoltage recovery threshold

VBATTHL

VBAT undervoltage detection threshold

uUVBAT

Undervoltage detection threshold

VCCTHH

VCC undervoltage recovery threshold

VCCTHL

VCC undervoltage detection threshold

uUVCC

Undervoltage detection threshold

VIOTHH

VIO undervoltage recovery threshold

VIOTHL

VIO undervoltage detection threshold

uUVIO

Undervoltage detection threshold

tUV_DETECT

Detection time for undervoltage at VBAT, VCC,

VIO

dUVBAT, dUVCC,

dUVIO

Undervoltage reaction time

tUV_REC

Detection time for undervoltage recovery at

VBAT, VCC, VIO

Bus Error Detection

ITHL

Absolute bus current for low current detection

ITHH

Absolute bus current for high current detection

VSHORT

Differential voltage on BP and BM

for detecting short circuit between bus lines

tBUS_ERROR

Bus error detection time

Detection only required while actively

transmitting a data frame, error indication to

host latest when transmission stops.

Over Temperature

OTTH

Over temperature threshold

OTTL

Over temperature hysteresis

Table 12. Comparison Table

AS8221 Datasheet

FlexRay

Electrical Physical Layer Specification V2.1 Rev. B

Symbol

Parameter

Name

Description

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