FRDMKL27Z User’s Guide, Rev. 0, 02/2015
Freescale Semiconductor, Inc.
5
FRDM-KL27Z hardware description
Figure 2. FRDM-KL27Z power supply
Table 1
provides the operational details and requirements for the power supplies.
NOTE
The OpenSDA circuit is only operational when a USB cable is connected
and supplying power to J13. However, the protection circuitry is in place to
allow multiple sources to be powered at once.
Table 1. Tower supply requirements
Supply Source
Valid Range
OpenSDA
Operational?
Regulated
On-board?
OpenSDA USB (J13)
5V
Yes
Yes
Mini USB(J10)
5V
No
Yes
P5V0-9V0_VIN Pin on I/O header
4.3-9V
No
Yes
P3V3 Pin on I/O header
1.71-3.6V
No
No
Battery
2-3.6V
No
No
Table 2. FRDM-KL27Z power supplies
Power Supply Name
Description
P5V0-9V0_VIN
Power supplied from the
V
IN
pin of the I/O headers
(J3 pin 16).
P5V_SDA
Power supplied from the
OpenSDA USB
connector (J13).
P5V_KL27Z
Power supplied from the
Mini USB
connector (J10).
