MCP2021-330E-P MICROCHIP [Microchip Technology], MCP2021-330E-P Datasheet - Page 8

• Manufacturer Part Number: MCP2021-330E-P
• Description: LIN Transceiver with Voltage Regulator
• Manufacturer: MICROCHIP [Microchip Technology]

MCP2021/2/1P/2P
FIGURE 1-2:
FIGURE 1-3:
DS22018F-page 8
Note:
While the device is in shutdown, T
through the ESD diodes and may damage the device.
Transmitter Off
Transmitter Off
VREG: ON
VREG: ON
TX: OFF
RX: ON
TX: OFF
RX: ON
MCP2021/2 Operational Modes State Diagrams.
MCP2021P/2P Operational Modes State Diagrams.
CS/LWAKE=0
CS/LWAKE=0
*Fault: thermal shutdown and TXD/LBUS permanent dominant
*Fault: thermal shutdown and TXD/LBUS permanent dominant
FAULT/TXE=0
FAULT/TXE=0
Or Faults*
Or Faults*
FAULT/TXE=1
&No Faults*
FAULT/TXE=1
&No Faults*
CS=1&VREG_OK=1
XD
&FAULT/TXE=0
Power-Down
Power-Down
VREG: OFF
CS/LWAKE=0
TX: OFF
RX: OFF
VREG: OFF
CS/LWAKE=0
should not be actively driven high or it may power internal logic
TX: OFF
RX: OFF
Operation
VREG: ON
Operation
RX: ON
TX: ON
VREG: ON
TX: ON
RX: ON
CS/LWAKE=1&
VREG_OK=1
CS/LWAKE=1&
VREG_OK=1&
FAULT/TXE=1
or dominant level on LBUS
or Falling edge on LBUS
VREG: ON
TX: OFF
Ready
RX: ON
CS/LWAKE=1
CS/LWAKE=1
VREG: ON
TX: OFF
Ready
RX: ON
Start
Start
© 2005-2012 Microchip Technology Inc.
VREG: OFF
TX: OFF
RX: OFF
POR
VREG: OFF
RX: OFF
TX: OFF
POR