NXP Semiconductors
UM11183
KITFS85SKTEVM evaluation board
UM11183
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© NXP B.V. 2019. All rights reserved.
User guide
Rev. 2.0 — 20 February 2019
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3.2 Additional hardware
In addition to the kit contents, the following hardware is necessary or beneficial when
working with this kit.
•
Power supply with a range of 8.0 V to 60 V and a current limit set initially to 1.0 A
3.3 Windows PC workstation
This evaluation board requires a Windows PC workstation. Meeting these minimum
specifications should produce great results when working with this evaluation board.
•
USB-enabled computer with Windows 7 or Windows 10
3.4 Software
Installing software is necessary to work with this evaluation board. All listed software
is available on the evaluation board's information page at
•
FlexGUI latest version
•
FS85_FS84_OTP_Config.xlsm
•
Java installation
https://www.oracle.com/technetwork/java/javase/downloads/jre8-
4 Getting to know the hardware
The KITFS85SKTEVM provides flexibility to play with all the features of the device and
make measurements on the main part of the application. The KL25Z MCU installed on
the board, combined with the FlexGUI software allows access to the registers in read and
write mode. All regulators are accessible through connectors. Nonuser signals, like DC/
DC switcher node are mapped on test points. Digital signals (SPI, I2C, RSTb, etc.) are
accessible through connectors. Wake1 pin has a switch to control (Ignition) them. A V
BAT
switch is available to power On or Off the device.
The main purpose of this kit is to burn the OTP configuration. This kit can be operated in
Emulation mode or in OTP mode. In Emulation mode, as long as the power is supplied,
the board configuration stays valid. The OTP mode uses the fused configuration. The
device can be fused three times. In OTP mode, the device always starts with the fused
configuration, except if the user wants to overwrite OTP configuration using Emulation
mode. This board is able to fuse the OTP without any extra tools or board.
Note:
Due to the socket, this kit is not optimized for performance measurement or current
higher than 1.0 A.
4.1 Kit overview
The KITFS85SKTEVM is a hardware evaluation tool that allows OTP burning. Due to
the socket, the FS84/FS85 part can be configured without the need to solder it. Devices
can be programmed three times (see
Section 7.3 "Programming the device with an OTP
).
An Emulation mode is possible to test as many configurations as needed.
An external LDO provides VDDI2C voltage with a choice of 1.8 V or 3.3 V (default).
VDDIO is assigned by default to VDDI2C. From USB voltage, an external DC/DC