MC68HC08AS32 Datasheet, PDF (369/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Byte Data Link Controller-Digital (BDLC-D)
Low-Power Modes
detected prior to issuing the WAIT instruction by the CPU. Otherwise,
the BDLC will not correctly receive the byte that woke it up.
If this mode is entered while the BDLC is receiving a message, the first
subsequent received edge will cause the BDLC to wake up immediately,
generate a CPU interrupt request, and wait for the BDLC internal
operating clocks to restart and stabilize before normal communications
can resume. Therefore, the BDLC is not guaranteed to receive that
message correctly.
NOTE: It is important to ensure all transmissions are complete or aborted prior
to putting the BDLC into stop mode.
MC68HC08AS32 — Rev. 3.0
MOTOROLA
Byte Data Link Controller-Digital (BDLC-D)
Advance Information
369