Datasheet

 2010-2013 Microchip Technology Inc. DS20002230E-page 5
MCP2003/4/3A/4A
FIGURE 1-3: OPERATIONAL MODES STATE DIAGRAM – MCP2003A
FIGURE 1-4: OPERATIONAL MODES STATE DIAGRAM – MCP2004
POR
VREN OFF
RX OFF
TX OFF
VBAT>5.5V
Ready
VREN ON
RX OFF
TX OFF
TOFF
Mode
VREN ON
RX ON
TX OFF
Operation
Mode
VREN ON
RX ON
TX ON
POWER
DOWN
VREN OFF
RX OFF
TX OFF
CS=1 & TXD=0
CS=1 & TXD=1
CS=1 & TXD=1 & No Fault
Fault (thermal or timer)
CS=0
Rising edge on LIN
or CS=1
Or falling edge on WAKE PIN
CS=0
POR
VREN OFF
RX OFF
TX OFF
VBAT>5.5V
Ready
VREN ON
RX ON
TX OFF
TOFF
Mode
VREN ON
RX ON
TX OFF
Operation
Mode
VREN ON
RX ON
TX ON
POWER
DOWN
VREN OFF
RX OFF
TX OFF
CS=1 & (TXE=0 or TXD=0)
CS=1 & TXD=1 & TXE=1
CS=1 & TXD=1 &TXE=1 &
No Fault
Fault (thermal or timeout)
or FAULT/TXE=0
CS=0
Falling edge on LIN
or CS=1
CS=0