Datasheet
NXP Semiconductors
UM11193
KITFS85AEEVM evaluation board
UM11193 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 2.1 — 30 January 2019
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a
a
a
-
0
3
3
1
5
0
2
4
6
8
10
MOSI
MISO
SCLK
CSB
VPRE
1
J30
3
5
7
9
12
14
16
VSUP
GND GND
WAKE1
VDDI2C
I2C_SDA
I2C_SCL
VDDIO_EXT
DBG
11
13
15
Figure 6. J30 SPI connection
4.1.6 VDDI2C
As an option, an external LDO is provided to feed VDDI2C. This LDO can also be used to
feed VDDIO, which is the default implementation.
The I2C is compatible with 1.8 V or 3.3 V, while VDDIO is compatible with 3.3 V and
5.0 V. For this reason, the LDO default configuration is 3.3 V. The LDO is supplied by
5.0 V coming from the USB.
a
a
a
-
0
3
3
1
5
1
2
4
6
8
10
LDO1
LDO2
VDDI2C
BUCK3
VDDIO_EXT
P3V3_KL25Z
DNP
R1
0 Ω
VDDIO
selection
VDDIO
1
J8
3
5
7
9
Figure 7. VDDIO selection
a
a
a
-
0
3
3
1
5
2
GND
IN
EN
OUT
MIC5235YM5
VDDI2C
ADJ
1
U1
3
5
4
2
GND
GND
GND
VDDI2C_SEL
HDR 1X3
[4]P5V0_USB
C85
1 µF
C84
2.2 µF
J19
1.8 V3.3 V
123
R11
52.3 kΩ
R10
191 kΩ
R73
115 kΩ
R89
0 Ω
Figure 8. VDDI2C supply
4.2 Device OTP user configuration
It is recommended to learn about OTP before operating with the device. The device
has a high level of flexibility due to parameter configuration available in the OTP. This