Appendix
CY8CKIT-044 PSoC® 4 M-Series Pioneer Kit Guide, Doc. No. 001-96598 Rev. *C
53
A.3.11 PWM Temperature Sensor
A PWM temperature sensor is included on the PSoC 4 M-Series Pioneer Kit (marked
19
in
Figure A-15
). This sensor is also
known as a TMP05 sensor and can indicate the measured temperature by varying the duty cycle of the PWM output
generated by the sensor.
Refer to the
TMP05 Datasheet
for more details on the operation of this sensor. Note that the sensor is configured to operate
in daisy chained mode.
A.3.12 Ambient Light Sensor
The PSoC 4 M-Series Pioneer Kit includes an analog ambient light sensor (marked
21
in
Figure A-15
). This is a photodiode
configured in photoconductive mode for detecting the changes in the ambient light intensity.
The photodiode is intended to be connected to the input of a transimpedance amplifier. A 220-K
Ω resistor and a 0.1-uF
capacitor are connected across the pins P5[1] and P5[2] to for implementing a transimpedance amplifier. Refer to the
TEMD6200FX01 datasheet
for the electrical characteristics of the photodiode.
A.3.13 Serial Interconnection Between PSoC 5LP and PSoC 4200M
In addition to use as an onboard programmer, the PSoC 5LP is used as a USB-Serial interface for the USB-UART bridge
and USB-I2C bridge, as shown in
Figure A-15
. The I2C bus contains firmware-controlled resistive pull-ups using FET, which
can be enabled or disabled using the PSoC 5LP pins. The USB-Serial pins of the PSoC 5LP are also available on the
Arduino header; therefore, the PSoC 5LP can be used to control Arduino Shields with an SPI/I2C/UART interface.
Note
: The KitProg does not support USB-SPI bridge functionality. The SPI pins of the PSoC 4200M are connected to the
PSoC 5LP for enabling SPI communication between PSoC 5LP and PSoC 4200M for custom PSoC 5LP applications.
Figure A-21. Schematics of Serial Interface Connections and I2C Pull-Up via FET
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