MC68HC705C8ACS

Manufacturer Part NumberMC68HC705C8ACS
ManufacturerFreescale Semiconductor, Inc
MC68HC705C8ACS datasheet
 


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Page 75/222:

Data-Retention Mode

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Freescale Semiconductor, Inc.
6.4.1 Programmable COP Watchdog in Wait Mode
The programmable COP watchdog is active during wait mode. Software
must periodically bring the MCU out of wait mode to clear the
programmable COP watchdog.
6.4.2 Non-Programmable COP Watchdog in Wait Mode
The non-programmable COP watchdog is active during wait mode.
Software must periodically bring the MCU out of wait mode to clear the
non-programmable COP watchdog.
6.5 Data-Retention Mode
In data-retention mode, the MCU retains random-access memory (RAM)
contents and CPU register contents at V
The data-retention feature allows the MCU to remain in a low
power-consumption state during which it retains data, but the CPU
cannot execute instructions.
To put the MCU in data-retention mode:
1. Drive the RESET pin to logic 0.
2. Lower V
To take the MCU out of data-retention mode:
1. Return V
2. Return the RESET pin to logic 1.
MC68HC705C8A — Rev. 3
MOTOROLA
For More Information On This Product,
voltage. The RESET pin must remain low continuously
DD
during data-retention mode.
to normal operating voltage.
DD
Low-Power Modes
Go to: www.freescale.com
Low-Power Modes

Data-Retention Mode

voltages as low as 2.0 Vdc.
DD
Technical Data