MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 304

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Serial Peripheral Interface (SPI)
18.11 Low-Power Modes
18.11.1 Wait Mode
18.11.2 Stop Mode
Advance Information
304
The WAIT and STOP instructions put the MCU in low-power standby
modes.
The SPI module remains active after the execution of a WAIT instruction.
In wait mode, the SPI module registers are not accessible by the CPU.
Any enabled CPU interrupt request from the SPI module can bring the
MCU out of wait mode.
If SPI module functions are not required during wait mode, reduce power
consumption by disabling the SPI module before executing the WAIT
instruction.
To exit wait mode when an overflow condition occurs, enable the OVRF
bit to generate CPU interrupt requests by setting the error interrupt
enable bit (ERRIE). (See
The SPI module is inactive after the execution of a STOP instruction.
The STOP instruction does not affect register conditions. SPI operation
resumes after the MCU exits stop mode. If stop mode is exited by reset,
any transfer in progress is aborted and the SPI is reset.
Serial Peripheral Interface (SPI)
18.8
Interrupts.)
MC68HC708AS48
MOTOROLA
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Rev. 4.0