Datasheet

FRDM-KV31F Hardware Description
Freedom FRDM-KV31F Development Platform User’s Guide, User's Guide, 0, 02/2016
4 Freescale Semiconductor, Inc.
Table 1. FRDM-KV31F Power supply requirements
Supply source
Valid range
OpenSDAv2
operational?
Regulated onboard?
OpenSDAv2 USB
5 V
Yes
Yes
VIN Pin
5 – 9 V
No
Yes
3.3 V Header (J20)
1.71 V – 3.6 V
No
No
DC Jack (not populated)
5 – 9 V
No
Yes
Figure 2. Power supply schematic
3.2.
Serial and debug adapter (OpenSDAv2.1)
An on-board K20DX128VFM5-based OpenSDA circuit provides a SWD debug interface to the
KV31F512VLL12. A standard USB A male to micro-B male cable (provided) can be used for
debugging via the USB connector (J21).
The OpenSDA interface also provides a USB to serial bridge. Drivers for the OpenSDA interface are
provided in the P&E Micro OpenSDA Tower Toolkit. These drivers and more utilities can be found
online at www.pemicro.com/opensda.