FRDM-KL43Z User’s Guide, Rev. 1
8
NXP Semiconductors
FRDM-KL43Z hardware description
Figure 5. SWD debug connector
Note that J11 is not-populated by default. A Samtec FTSH-105-02-F-D or compatible connector can be
added to the J11 through-hole connector. A mating cable, such as a Samtec FFSD IDC cable, can then be
used to connect from the OpenSDA of the FRDM-KL43Z to an off-board SWD connector.
5.2.2
Virtual serial port
A serial port connection is available between the OpenSDA MCU and pins PTA1 and PTA2 of the KL43.
Several of the default OpenSDA applications provided by Freescale, including the MSD flash programmer
and the P&E debug application, provide a USB Communications Device Class (CDC) interface that
bridges serial communications between the USB host and this serial interface on the K20.
5.3
MKL43Z256 microcontroller
The target microcontroller of the FRDM-KL43Z is the KL432Z256VLH4, a Kinetis L series device in a
64 LQFP package. The KL43Z MCU features include:
•
32-bit ARM Cortex-M0+ core
— up to 48 MHz operation
— Single-cycle fast I/O access port
•
Memories
— 256 KB flash memory
— 32 KB SRAM
— 16 K ROM (with Kinetis bootloader Kibble included)
•
System integration
— Power management and mode controllers
— Low-leakage wakeup unit
J21
