MC68HC08AZ0 Datasheet, PDF (371/444 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
msCAN08 Controller (msCAN08)
Low power modes
msCAN08 Running
SLPRQ = 0
SLPAK = 0
MCU
or msCAN08
MCU
msCAN08 Sleeping
SLPRQ = 1
SLPAK = 1
Sleep Request
SLPRQ = 1
SLPAK = 0
msCAN08
Figure 6. Sleep request/acknowledge cycle
Soft Reset mode
In Soft Reset mode, the msCAN08 is stopped. Registers can still be
accessed. This mode is used to initialize the module configuration, bit
timing, and the CAN message filter. See msCAN08 module control
register (CMCR0) on page 381, for a complete description of the Soft
Reset mode.
Power Down
mode
The msCAN08 is in Power Down mode when the CPU is in STOP mode.
When entering the Power Down mode, the msCAN08 immediately stops
all ongoing transmissions and receptions, potentially causing CAN
protocol violations. It is the user’s responsibility to take care that the
msCAN08 is not active when Power Down mode is entered. The
recommended procedure is to bring the msCAN08 into Sleep mode
before the STOP instruction is executed.
19-can
MOTOROLA
msCAN08 Controller (msCAN08)
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MC68HC08AZ0
369