MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 363

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

21.9.3 MSCAN08 Power Down Mode
21.9.4 CPU Wait Mode
MC68HC08AZ60A — Rev 0.0
MOTOROLA
NOTE:
NOTE:
When setting the SFTRES bit, the MSCAN08 immediately stops all
ongoing transmissions and receptions, potentially causing CAN protocol
violations.
The user is responsible to take care that the MSCAN08 is not active
when Soft Reset mode is entered. The recommended procedure is to
bring the MSCAN08 into Sleep mode before the SFTRES bit is set.
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.
The user is responsible 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.
To protect the CAN bus system from fatal consequences of violations to
the above rule, the MSCAN08 drives the TxCAN pin into recessive state.
In Power Down mode, no registers can be accessed.
MSCAN08 bus activity can wake the MCU from CPU Stop/MSCAN08
power-down mode. However, until the oscillator starts up and
synchronisation is achieved the MSCAN08 will not respond to incoming
data.
The MSCAN08 module remains active during CPU wait mode. The
MSCAN08 will stay synchronized to the CAN bus and generates
transmit, receive, and error interrupts to the CPU, if enabled. Any such
interrupt will bring the MCU out of wait mode.
MSCAN08 Controller (MSCAN08)
MSCAN08 Controller (MSCAN08)
Advance Information
Low Power Modes
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