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MCP2050 Datasheet(PDF) 10 Page - Microchip Technology

Part # MCP2050
Description  LIN Transceiver with Voltage Regulator
PDF  40 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP2050 Datasheet(HTML) 10 Page - Microchip Technology

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MCP2050
DS20002299C-page 10
 2012-2014 Microchip Technology Inc.
FIGURE 1-6:
VBATRATIO OUTPUT RANGE
TABLE 1-3:
FAULT/TXE TRUTH TABLE
TXD
In
RXD
Out
LIN BUS
I/O
Thermal
Override
FAULT/TXE
Definition
External
Input
Driven
Output
CS = 1
LH
VBB
OFF
H
L
FAULT
, TXD driven low, LBUS shorted to VBB
(Note 1),
or LBUS/TXD permanent dominant
detected, and transmit time-out shutdown.
HH
VBB
OFF
H
H
OK
LL
GND
OFF
H
H
OK
HL
GND
OFF
H
H
OK
, data is being received from LBUS
xx
VBB
ON
H
L
FAULT
, transceiver in thermal shutdown
xx
VBB
xL
x
NO FAULT
, the CPU is commanding the
transceiver to turn off the transmitter driver
CS = 0 after a wake-up
xx
x
x
x
L
Wake-up from LIN bus activity
xx
x
x
x
H
Wake-up from POR
Legend:
x = don’t care
Note 1:
The FAULT/TXE is valid after approximately 25 µs after TXD falling edge. This is to eliminate false fault
reporting during bus propagation delays.
Note 1:
Linear range of VBATRATIO is between VBB = 6.0-18.0V.
0
VBB
.25VREG
.75VREG
VREG/2
VBATRATIO
6V
12V
18V
24V



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