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AS8221-ASSP 数据表(PDF) 36 Page - ams AG |
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AS8221-ASSP 数据表(HTML) 36 Page - ams AG |
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36 / 42 page ![]() 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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