MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 55

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

3.11.2 Stop Mode
3.12 Serial Peripheral Interface Module (SPI)
3.12.1 Wait Mode
3.12.2 Stop Mode
3.13 Timer Interface Module (TIM1 and TIM2)
3.13.1 Wait Mode
MC68HC908GR8 — Rev 4.0
MOTOROLA
The SCI module is inactive in stop mode. The STOP instruction does not
affect SCI register states. SCI module operation resumes after the MCU
exits stop mode.
Because the internal clock is inactive during stop mode, entering stop
mode during an SCI transmission or reception results in invalid data.
The SPI module remains active in wait mode. 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.
The SPI module is inactive in stop mode. The STOP instruction does not
affect SPI register states. 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.
The TIM remains active in wait mode. Any enabled CPU interrupt
request from the TIM can bring the MCU out of wait mode.
If TIM functions are not required during wait mode, reduce power
consumption by stopping the TIM before executing the WAIT instruction.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
Low Power Modes
Serial Peripheral Interface Module (SPI)
Low Power Modes
Technical Data
55