Datasheet

FRDMKL02ZUM
Figure 3.
Table 2.
Power Supply Name
P5-9V_VIN
Power supplied from the
P5V0_USBER
Power supplied from the
A Schottky diode provides back drive protection.
P3V3_VREG
Regulated 3.3V supply
through a back drive protection Schottky diode.
P3V3_BATT
Coin
cell battery
rail through a back drive protection Schottky diode.
P3V3
Main supply rail
P3V3_VREG, P3V3_BATT, or directl
and
pin 4
P3V3_MCU
KL02Z
MCU supply.
energy consumption measurements.
P3V3_USBER
OpenSDA circuit supply.
energy consumption measurements.
Notes:
1) By default the
linear regulator, U6
is a common footprint that would allow the user to modify the assembly to
utilize an alternative device such as a 1.8V or 2.5V regulator.
microcontroller has an operating range of
2) J4 and J5
are not populated by default. The two pins of these headers are
shorted together by a trace on the bottom layer of the PCB. To measure the
energy consumption of either the
between these pi
ns must first be cut. A current probe or a shunt resistor and
voltage meter can then be applied to measure the energy consumption on these
rails.
FRDM-KL02Z User Manual
Figure 3.
Power Supply Schematic
Table 2.
FRDM-KL02Z Power Supplies
Description
Power supplied from the
V
IN
pin of the I/O headers
(J9 pin 8
Power supplied from the
OpenSDA USB
connector (J2 and J9(
A Schottky diode provides back drive protection.
Regulated 3.3V supply
. Sources power to the P3V3 supply rail
through a back drive protection Schottky diode.
1
cell battery
supply voltage. Sources power to the P3V3 supply
rail through a back drive protection Schottky diode.
Main supply rail
for the FRDM-KL02Z assembly
. May be sourced from
P3V3_VREG, P3V3_BATT, or directl
y from the I/O headers (J9 pin 2
pin 4
)
MCU supply.
Header J4 provides a convenient means for
energy consumption measurements.
2
OpenSDA circuit supply.
Header J5
provides a convenient means for
energy consumption measurements.
2
linear regulator, U6
, is a 3.3V output regulator. However, this
is a common footprint that would allow the user to modify the assembly to
utilize an alternative device such as a 1.8V or 2.5V regulator.
The
KL02Z
microcontroller has an operating range of
1.71V to 3.6V.
are not populated by default. The two pins of these headers are
shorted together by a trace on the bottom layer of the PCB. To measure the
energy consumption of either the
KL02Z
or the OpenSDA MCU, the trace
ns must first be cut. A current probe or a shunt resistor and
voltage meter can then be applied to measure the energy consumption on these
Page 6 of 11
(J9 pin 8
).
connector (J2 and J9(
pin 5)).
. Sources power to the P3V3 supply rail
supply voltage. Sources power to the P3V3 supply
. May be sourced from
y from the I/O headers (J9 pin 2
Header J4 provides a convenient means for
provides a convenient means for
, is a 3.3V output regulator. However, this
is a common footprint that would allow the user to modify the assembly to
KL02Z
are not populated by default. The two pins of these headers are
shorted together by a trace on the bottom layer of the PCB. To measure the
or the OpenSDA MCU, the trace
ns must first be cut. A current probe or a shunt resistor and
voltage meter can then be applied to measure the energy consumption on these