參數(shù)資料
型號: AS8530-ASOT-002-500
廠商: ams
文件頁數(shù): 14/33頁
文件大?。?/td> 0K
描述: IC TXRX LIN COMPANION 8-SOIC
標(biāo)準(zhǔn)包裝: 500
系列: *
Revision 1.1
20 - 32
AS8530
Datasheet - Application In form atio n
8.4.2 Receive Mode
The data signals from the BUS pin will be transferred continuously to the pin RX. Short spikes on the bus signal are suppressed by the
implemented de-bouncing circuit. Including all tolerances the LIN specific receive threshold values of 0.4*VSUP and 0.6*VSUP will be securely
observed.
Figure 8. Receive Mode Impulse Diagram
8.5 RX and TX Interface
Input TX.
The 5V 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 9. TX Input Circuitry
t < tdeb_BUS
RX
BUS
40%
50%
60%
Vthr_max
Vthr_min
Vthr_hys
Vthr_cnt
AS8530
VCC
MCU
RC-Filter
(10ns)
VCC
IPU_TXD
TX
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