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PCA9541APW/01 데이터시트(PDF) 24 Page - NXP Semiconductors

부품명 PCA9541APW/01
상세설명  2-to-1 I2C-bus master selector with interrupt logic and reset
PDF  41 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
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PCA9541APW/01 데이터시트(HTML) 24 Page - NXP Semiconductors

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PCA9541A_3
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 16 July 2009
24 of 41
NXP Semiconductors
PCA9541A
2-to-1 I2C-bus master selector with interrupt logic and reset
10. Application design-in information
10.1 Specific applications
The PCA9541A is a 2-to-1 I2C-bus master selector designed for dual master, high
reliability I2C-bus applications, where continuous maintenance and control monitoring is
required even if one master fails or its controller card is removed for maintenance. The
PCA9541A can also be used in other applications, such as where masters share the
same resource but cannot share the same bus, as a gatekeeper multiplexer in long single
bus applications or as a bus initialization/recovery device.
Fig 17. Typical application
PCA9541A
SCL_MST0
SDA_MST0
INT0
3.3 V
MASTER 0
002aae661
SCL0
SDA0
INT0
INT_IN
A3
A2
A1
VDD
A0
VSS
VDD
RESET0
VSS
SLAVE 1
SDA
SCL
SLAVE 2
SDA
SCL
INT
SLAVE 3
SDA
SCL
SDA_SLAVE
SCL_SLAVE
SCL_MST1
SDA_MST1
INT1
3.3 V
MASTER 1
SCL1
SDA1
INT1
VDD
RESET1
VSS
RESET
SLAVE CARD



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