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MCP2021 датащи(PDF) 5 Page - Microchip Technology

номер детали MCP2021
подробное описание детали  LIN Transceiver with Voltage Regulator
PDF  46 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP2021 датащи(HTML) 5 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS22018E-page 5
MCP2021/2
TABLE 1-1:
OVERVIEW OF OPERATIONAL MODES
1.4
Typical Applications
EXAMPLE 1-1:
TYPICAL MCP2021 APPLICATION
State
Transmitter
Receiver
Voltage
Regulator
Operation
Comments
POR
OFF
OFF
OFF
Read CS/LWAKE, if LOW, then READY,
if HIGH, Operational mode
READY
OFF
Activity
Detect
ON
If CS/LWAKE high level, then Operation
mode
Bus Off state
OPERATION
ON
ON
ON
If CS/LWAKE low level, then Power down
If FAULT/TXE low level, then Transmitter-
Off mode
Normal
Operation
mode
POWER DOWN
OFF
Activity
Detect
OFF
On LIN bus falling, go to READY mode.
On CS/LWAKE high level, go to
Operational mode
Low Power
mode
TRANSMITTER-
OFF
OFF
ON
ON
If CS/LWAKE low level, then Power down
If FAULT/TXE high, then Operation mode
LIN Bus
27V
(4)
VBB
LBUS
VREG
TXD
RXD
VSS
VDD
TXD
RXD
+12
CF
CG
CS/LWAKE
I/O
FAULT/TXE
I/O
43V
(5)
1k
Ω
+12
Master Node Only
+12
220 k
Ω
WAKE-UP
Note 1: See Figure 2-3 for correct capacity and ESR for stable operation.
.
2: CF is the filter capacitor for the external voltage supply.
3: This diode is only needed if CS/LWAKE is connected to 12V supply.
4: Transient suppressor diode. Vclamp L = 43V.
5: These components are required for additional load dump protection above 43V..
(3)
RTP
(5)
100nF



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