K60P100M100SF2RM Datasheet, PDF (144/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Communication interfaces
2 AA Cells
VDD
Cstab
VOUT33
TYPE A
VBUS
D+
D-
VREGIN
USB0_DP
USB0_DM
To PMC and Pads
Chip
USB
Regulator
USB
XCVR
USB
Controller
Figure 3-53. USB regulator AA cell usecase
3.9.2.2.2 Li-Ion battery power supply
The chip can also be powered by a single Li-ion battery. In this case, VOUT33 is
connected to VDD. The USB regulator must be enabled by default to power the MCU.
When connected to a USB host, the input source of this regulator is switched to the USB
bus supply from the Li-ion battery. To charge the battery, the MCU can configure the
battery charger according to the charger detection information.
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
144
Freescale Semiconductor, Inc.