Datasheet

FRDMKL25ZUM FRDM-KL05Z User's Manual Page 8 of 13
Figure 5. SWD Debug Connector
Note that J1 is not-populated by default. A Samtec FTSH-105-02-F-D or compatible connector can be
added to the J1 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-KL05Z to an off-board SWD connector.
5.2.2 Virtual Serial Port
A serial port connection is available between the OpenSDA MCU and the KL05Z through pins PTB1 and
PTB2 . 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
KL05Z.
5.3 KL05Z Microcontroller
The target microcontroller of the FRDM-KL05Z is the MKL05Z32VFM4, a Kinetis L series device in a 32
QFN package. The KL05Z MCU features include:
 32-bit ARM Cortex-M0+ core
- up to 48 MHz operation
- Single-cycle fast I/O access port
 Memories
- 32 KB flash
- 4KB SRAM
 System integration
- Power management and mode controllers
- Low-leakage wakeup unit
- Bit manipulation engine for read-modify-write peripheral operations
- Direct memory access (DMA) controller
- Computer operating properly (COP) Watchdog timer
 Clocks
- Clock generation module with FLL for system and CPU clock generation
- 4 MHz and 32 kHz internal reference clock