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MCP2021 датащи(PDF) 11 Page - Microchip Technology

номер детали MCP2021
подробное описание детали  LIN Transceiver with Voltage Regulator
PDF  52 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP2021 датащи(HTML) 11 Page - Microchip Technology

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© 2005-2012 Microchip Technology Inc.
DS22018F-page 11
MCP2021/2/1P/2P
TABLE 1-1:
OVERVIEW OF OPERATIONAL MODES
State
Transmitter
Receiver
Voltage
Regulator
Operation
Comments
POR
OFF
OFF
OFF
Read VBB; if VBB>5.75V, enter Ready
mode
Ready
OFF
ON
ON
MCP2021/2:
If CS/LWAKE is high level, then Operation
mode.
MCP2021P/2P:
If CS/LWAKE is high level and FAULT/TXE
is high level, then Operation mode.
If CS/LWAKE is high level and FAULT/TXE
is low level, then TXOFF mode.
Bus Off state
Operation
ON
ON
ON
If CS/LWAKE is low level, then Power-
Down mode.
If FAULT/TXE is low level or TXD/LBUS
permanent dominant is detected, 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 through Ready
mode; then, to either operation or
Transmitter-Off mode (refer to Figure 1-2
and Figure 1-3).
Low Power
mode
Transmitter-Off
OFF
ON
ON
If CS/LWAKE is low level, then Power-
Down mode.
If FAULT/TXE is high, then Operation
mode.



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