MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 308
MC68HC908AP16CFA
Manufacturer Part Number
MC68HC908AP16CFA
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AP16CFA.pdf
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Serial Peripheral Interface Module (SPI)
15.10 Low-Power Modes
15.10.1 Wait Mode
15.10.2 Stop Mode
Data Sheet
308
By not resetting the SPRF, OVRF, and MODF flags, the user can still
service these interrupts after the SPI has been disabled. The user can
disable the SPI by writing 0 to the SPE bit. The SPI can also be disabled
by a mode fault occurring in an SPI that was configured as a master with
the MODFEN bit set.
The WAIT and STOP instructions put the MCU in low power-
consumption 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 an external interrupt. If stop mode is exited by reset, any
transfer in progress is aborted, and the SPI is reset.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
15.8
Interrupts.)
MC68HC908AP Family — Rev. 2.5
MOTOROLA
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