PXD10RM Datasheet, PDF (43/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

• Mode Entry Module (MC_ME) to control the device power mode, i.e., RUN, HALT, STOP, or
STANDBY, control mode transition sequences, and manage the power control, voltage regulator,
clock generation and clock management modules
• Reset Generation Module (MC_RGM) to manage reset assertion and release to the device at initial
power-up
• Nexus development interface (NDI) per IEEE-ISTO 5001-2003 Class Two Plus standard
• Device/board boundary-scan testing supported per Joint Test Action Group (JTAG) of IEEE (IEEE
1149.1)
• On-chip voltage regulator controller for regulating the 3.3 or 5 V supply voltage down to 1.2 V for
core logic (requires external ballast transistor)
• The PXD10 microcontrollers are offered in the following packages:¹
— 144 LQFP, 0.5 mm pitch, 20 mm  20 mm outline
— 176 LQFP, 0.5 mm pitch, 24 mm  24 mm outline
1.5 Feature details
1.5.1 Low-power operation
PXD10 devices are designed for optimized low-power operation and dynamic power management of the
core processor and peripherals. Power management features include software-controlled clock gating of
peripherals and multiple power domains to minimize leakage in low-power modes.
There are two static low-power modes, STANDBY and STOP, and two dynamic power modes—RUN and
HALT. Both low power modes use clock gating to halt the clock for all or part of the device. The
STANDBY mode also uses power gating to automatically turn off the power supply to parts of the device
to minimize leakage.
STANDBY mode turns off the power to the majority of the chip to offer the lowest power consumption
mode. The contents of the cores, on-chip peripheral registers and potentially some of the volatile memory
are lost. STANDBY mode is configurable to make certain features available with the disadvantage that
these consume additional current:
• It is possible to retain the contents of the full RAM or only 8 KB.
• It is possible to enable the internal 16 MHz or 128 kHz RC oscillator, the external 4–16 MHz
oscillator, or the external 32 KHz oscillator.
• It is possible to keep the LCD module active.
The device can be awakened from STANDBY mode via from any of as many as 19 I/O pins, a reset or
from a periodic wake-up using a low power oscillator.
STOP mode maintains power to the entire device allowing the retention of all on-chip registers and
memory, and providing a faster recovery low power mode than the lowest STANDBY mode. There is no
need to reconfigure the device before executing code. The clocks to the core and peripherals are halted and
can be optionally stopped to the oscillator or PLL at the expense of a slower start-up time.
1. See the device comparison table or orderable parts summary for package offerings for each device in the family.
PXD10 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor
1-7
Preliminary—Subject to Change Without Notice