XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 82
XC68HC705JJ7
Manufacturer Part Number
XC68HC705JJ7
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC705JJ7.pdf
(242 pages)
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Operating Modes
6.4.3 Halt Mode
6.4.4 Data-Retention Mode
Advance Information
82
The STOP instruction puts the MCU in halt mode if selected by the
SWAIT bit in the MOR. Halt mode is identical to wait mode, except that
a variable recovery delay occurs when the MCU exits halt mode. A
recovery time of from 1 to 16 or from 1 to 4064 internal bus cycles can
be selected by the DELAY bit in the MOR.
If the SWAIT bit is set in the MOR to put the MCU in halt mode, the COP
watchdog cannot be turned off inadvertently by a STOP instruction.
In the data-retention mode, the MCU retains random-access memory
(RAM) contents and CPU register contents at V
Vdc. 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. Current consumption in this mode is not tested.
To put the MCU in the data retention mode:
To take the MCU out of the data retention mode:
1. Drive the RESET pin to a logic 0.
2. Lower the V
1. Return V
2. Return the RESET pin to a logic 1.
continuously during data retention mode.
DD
Operating Modes
DD
to normal operating voltage.
voltage. The RESET pin must remain low
MC68HC705JJ7 • MC68HC705JP7 — REV 4
DD
voltages as low as 2.0
MOTOROLA
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