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AS8515 データシート(PDF) 19 Page - ams AG

部品番号 AS8515
部品情報  Data Acquisition System with Power Management and LIN Transceiver for 12V Battery Sensor Applications
PDF  65 Pages
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メーカー  AMSCO [ams AG]
ホームページ  http://www.ams.com
Logo AMSCO - ams AG

AS8515 データシート(HTML) 19 Page - ams AG

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Revision 0.7
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AS8515
Datasheet - AS8515 To p Die Overview
7.14 Rx and Tx Interface
7.14.1 Input Tx
The 3.3V input Tx controls directly the BUS level. LIN Transmitter acts like a slew-controlled level shifter. A dominant state (low) on Tx leads to
the LIN bus being pulled low (dominant state) too. The Tx pin has an internal active pull up connected to VCC. This guarantees that an open Tx
pin generates a recessive BUS level.
Figure 10. Tx Interface
7.14.2 Output Rx
The received BUS signal will be output to the Rx pin:
BUS < Vthr_cnt – 0.5 * Vthr_hys
→ Rx = low
BUS > Vthr_cnt + 0.5 * Vthr_hys
→ Rx = high
This output is a push-pull driver between VCC and GND with an output current of 1mA
Figure 11. Rx Interface
VCC
Tx
AS8515
MCU
VCC
IPU_TxD
RC-Filter
(10ns)
Rx
VCC
AS8515
MCU



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