MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 261

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Low-Power Modes
Wait Mode
Stop Mode
27-sci_d
MOTOROLA
The WAIT and STOP instructions put the MCU in low-power-consump-
tion standby modes.
The SCI module remains active in wait mode. Any enabled CPU
interrupt request from the SCI module can bring the MCU out of wait
mode.
If SCI module functions are not required during wait mode, reduce power
consumption by disabling the module before executing the WAIT
instruction.
The DMA can service the SCI without exiting wait mode.
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.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
SCI
Low-Power Modes
MC68HC708XL36
SCI
261