© 2007 Microchip Technology Inc.

DS21730F-page 5

MCP201

TABLE 1-2:

OVERVIEW OF OPERATIONAL MODES

State

Transmitter

Voltage Regulator

Operation

Comments

POR

OFF

OFF

Read CS/WAKE.

If low, then READY.

If high, READY1 mode.

Sample FAULT/SLPS and

select slope

Ready

OFF

ON

If CS/WAKE rising edge, then

Operation mode.

Bus Off state

Ready1

OFF

ON

If CS/WAKE falling edge,

then READY mode.

Bus Off state

Operation

ON

ON

If CS/WAKE falling edge,

then Power down.

Normal Operation mode

Power-down

OFF

OFF

On LIN bus falling, go to

READY mode.

On CS/WAKE rising edge, go

to Operational mode

Low-Power mode

Note:

microcontroller should toggle CS approximately 1mS after RESET to ensure that CS will be recognized.