PXD10RM Datasheet, PDF (910/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Table 25-1. MC_ME Mode Descriptions (continued)
Name
Description
Entry
Exit
TEST
This is a chip-wide service mode which is intended to provide a
control environment for device self-test. It may enable the
application to run its own self-test like flash checksum, memory
BIST etc.
software request
from DRUN
system reset
assertion, DRUN via
software
RUN0…3
These are software running modes where most processing
activity is done. These various run modes allow to enable
different clock & power configurations of the system with respect
to each other.
software request
from DRUN, interrupt
event from HALT,
interrupt or wakeup
event from STOP
system reset
assertion, SAFE via
software or hardware
failure, other
RUN0…3 modes,
HALT, STOP,
STANDBY via
software
HALT
This is a reduced-activity low-power mode during which the clock
to the core is disabled. It can be configured to switch off analog
peripherals like PLL, flash, main regulator etc. for efficient power
management at the cost of higher wakeup latency.
software request
from RUN0…3
system reset
assertion, SAFE on
hardware failure,
RUN0…3 on
interrupt event
STOP
This is an advanced low-power mode during which the clock to
the core is disabled. It may be configured to switch off most of the
peripherals including oscillator for efficient power management at
the cost of higher wakeup latency.
software request
from RUN0…3
system reset
assertion, SAFE on
hardware failure,
RUN0…3 on
interrupt event or
wakeup event
STANDBY
This is a reduced-leakage low-power mode during which power
supply is cut off from most of the device. Wakeup from this mode
takes a relatively long time, and content is lost or must be
restored from backup.
software request
from RUN0…3,
DRUN modes
system reset
assertion, DRUN on
wakeup event
25.2 External Signal Description
The MC_ME has no connections to any external pins.
25.3 Memory Map and Register Definition
The MC_ME contains registers for:
• Mode selection and status reporting
• Mode configuration
• Mode transition interrupts status and mask control
• Scalable number of peripheral sub-mode selection and status reporting
25-4
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor