Appendix
CY8CKIT-044 PSoC® 4 M-Series Pioneer Kit Guide, Doc. No. 001-96598 Rev. *C
55
A.3.15 Level Translators
The PSoC 4 M-Series Pioneer Kit has two level translators. The level translators are used on this kit to translate digital 5-V
logic signals to 3.3 V. One level translator connects the I2C and UART signals from PSoC 4200M to the Raspberry Pi
compatible header. It also connects to the I2C bus of the accelerometer as shown in
Figure A-15
.
The level translator, which connects the I2C and UART interfaces to the Raspberry Pi is always on. This ensures that you
can read the accelerometer data without connecting a Raspberry Pi. This level translator also connects to the 3-Axis
accelerometer and the Cypress F-RAM device. The level translator, which interfaces SPI lines of PSoC 4200M to the
Raspberry Pi, is switched on automatically when a Raspberry Pi is connected to the PSoC 4 M-Series Pioneer Kit.
Figure A-23. Level Translators on PSoC 4 M-Series Pioneer Kit
PSoC
4200M
Level
Translator 1
Level
Translator 2
Raspberry Pi
3-Axis
Accelerometer
SPI
SPI
I2C
UART
I2C
UART
(ON when Raspberry Pi
is connected )
(Always ON)
F- RAM
KitProg
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