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NXP Semiconductors Freedom FRDM-KV11Z, User Manual, Page: 15 / 20

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NXP Semiconductors Freedom FRDM-KV11Z User Manual Download Page 15

Push button switches 

FRDM-KV11Z Evaluation Board Users Guide  

NXP Semiconductors 

 

15 

 

 

Figure 15.  Reset Circuit 

11.  Push button switches 

Two general purpose push buttons, SW2 and SW3, are available on the FRDM-KV11Z board. SW2 is 

connected to PTA4/NMI and SW3 is connected to PTB0.  SW2 is connected by default to the NMI – 

Non-Maskable-Interrupt input.  Care should be taken to select the function of the MCU input.  If left at 

default the MCU will hold in the NMI interrupt function if the NMI input is low or logic 0.  
Besides the general purposed input/output functions both switches can be used as low-power wake up 

trigger inputs.  

Summary of Contents for Freedom FRDM-KV11Z

Page 1: ...designs software libraries and motor configuration tools The FRDM KV10Z hardware is form factor compatible with the Arduino R3 pin layout providing a broad range of expansion board options Board embed...

Page 2: ...ckage Triple role USB interface with micro B USB connector RGB LED FXOS8700CQ Accelerometer and magnetometer Two user push buttons Flexible power supply option OpenSDA USB and Arduino header and 5 V p...

Page 3: ...rdware Overview FRDM KV11Z Evaluation Board Users Guide NXP Semiconductors 3 Figure 1 FRDM KV11Z block diagram The primary components and their placement on the hardware assembly are explained in the...

Page 4: ...1 71 V 3 6 V supply from the 3 3 V pin on the J14 header The USB OpenSDA and the DC jack are regulated onboard using a 3 3 V DC to DC linear regulator to produce the main power supply The voltage of t...

Page 5: ...No No DC Jack not populated J15 5 9 V Yes Yes Figure 3 Power supply Regulation Measuring MCU current Cut trace jumper J14 is provided to isolate the power supplied to the KV11 MCU To measure the curr...

Page 6: ...ess the debug interface of the KV311Z128VLH7P OpenSDA An on board K20DX128VFM5 based OpenSDA circuit provides a SWD debug interface to the KV311Z128VLH7P A standard USB A male to micro B male cable pr...

Page 7: ...tual mass storage device programming A mass storage device is enumerated in a Windows base machine when you attach the FRDM KV11 with a USB cable to the Windows computer USB connector Figure 6 Flash p...

Page 8: ...are With header J10 jumper placed between 1 2 default if you hold SW1 down while plugging in the USB cable to the FRDM KV11Z board the Bootloader Mass storage drive is enumerated Figure 8 Bootloader M...

Page 9: ...5 MHz it is the fastest ARM Cortex M0 MCU in the market With hardware square root and divide capability it delivers a 27 increase in performance in math intensive applications versus comparable MCUs a...

Page 10: ...ation ID number per chip Flash access control to protect proprietary software used by KMS protecting the top 8 Kbytes of Flash Analog Modules Two 16 bit SAR ADCs 1 2 MS s in 12 bit mode One 12 bit DAC...

Page 11: ...MHz clock frequency All of these settings and configurations can be managed with the MCUXpresso Clocks tool available on http www nxp com mcuxpresso 6 Accelerometer and magnetometer An FXOS8700CQ 6 a...

Page 12: ...10 K ohm part but the associated divider chain uses different resistors This makes the voltage across the thermistor larger or smaller and provides the ability to try the different gain settings on t...

Page 13: ...Semiconductors 13 Figure 12 Thermistor circuit 8 RGB LED RGB LED is connector through GPIO and signal connections are show in the following table LED Signal Connections RBG LED KV11Z Connection RED PT...

Page 14: ...9 not populated Figure 14 CAN interface circuit 10 Reset The RESET signal is low active on all Kinetis MCUs The KV11Z Reset signal is connected to the debug K20 MCU and a button SW1 If the J10 jumper...

Page 15: ...board SW2 is connected to PTA4 NMI and SW3 is connected to PTB0 SW2 is connected by default to the NMI Non Maskable Interrupt input Care should be taken to select the function of the MCU input If left...

Page 16: ...ged in a 48 pin LQFP Some pins are utilized in onboard circuitry but some are directly connected to one of the four I O headers The pins on the KV11Z microcontroller are named for their general purpos...

Page 17: ...are arranged to enable compatibility with peripheral boards known as shields that connect to Arduino and Arduino compatible microcontroller boards The outer rows of pins even numbered pins on the head...

Page 18: ...Design Package KV11P64M75RM KV11Z Sub family Reference Manual KV11P64M75 Kinetis C Series KV10 and KV11 128 64 KB Flash Data Sheet MCUXpresso Software Development Kit MCUXpresso IDE MCUXpresso Clocks...

Page 19: ......

Page 20: ...emarks NXP the NXP logo NXP SECURE CONNECTIONS FOR A SMARTER WORLD COOLFLUX EMBRACE GREENCHIP HITAG I2C BUS ICODE JCOP LIFE VIBES MIFARE MIFARE CLASSIC MIFARE DESFire MIFARE PLUS MIFARE FLEX MANTIS MI...

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