FRDMKL25ZUM

FRDM-KL25Z User's Manual

Page 10 of 14

5.3.5 Debug

The sole debug interface on all Kinetis L Series devices is a Serial Wire Debug (SWD) port. The primary

controller of this interface on the FRDM-KL25Z is the onboard OpenSDA circuit (see section 5.2).

However, an unpopulated 10-pin (0.05”) Cortex Debug connector, J6, provides access to the SWD

signals. The Samtec FTSH-105-02-F-D or compatible connectors can be added to the J6 through-hole

debug connector to allow for an external debug cable to be connected.

5.4 Capacitive Touch Slider

Two Touch Sense Input (TSI) signals, TSI0_CH9 and TSI0_CH10, are connected to capacitive electrodes

configured as a touch slider. Freescale’s Touch Sense Software (TSS) provides a software library for

implementing the capacitive touch slider.

5.5 3-axis Accelerometer

A Freescale MMA8451Q low-power, three-axis accelerometer is interfaced through an I

GPIO signals as shown in Table 4 below. By default, the I

Table 4. Accelerometer Signal Connections

MMA8451Q

KL25Z128

SCL

PTE24

SDA

PTE25

INT1

PTA14

INT2

PTA15

Figure 6. MMA8451Q Schematic Diagram

5.6 RGB LED

Three PWM-capable signals are connected to a red, green, blue LED, D3. The signal connections are

shown in Table 5 below.