PSoC Analog Coprocessor Pioneer Kit Guide, Doc. # 002-11190 Rev. *B
31
Kit Operation
The capacitance of the humidity sensor used in the code example
varies from 162 pF to
193 pF for 1% to 100% relative humidity (RH). The calibration capacitor is selected closer to the
upper range of capacitance measurement to reduce the gain error in measurement.
For details of firmware implementation, refer to the Code Example
CE211322_Humidity_Sensing
available in the kit installation directory.
3.1.3
KitProg2
The KitProg2 block consists of an onboard PSoC 5LP (CY8C5868LTI-LP039) device, which is used
to program and debug the PSoC Analog Coprocessor. The PSoC 5LP device connects to the USB
port of a PC through a USB connector, and to the SWD and other communication interfaces of the
PSoC Analog Coprocessor. PSoC 5LP is a true system-level solution providing MCU, memory, ana-
log, and digital peripheral functions in a single chip. The CY8C58LPxx family offers a modern
method of signal acquisition, signal processing, and control with high accuracy, high bandwidth, and
high flexibility. Analog capability spans the range from thermocouples (near DC voltages) to ultra-
sonic signals. For more information, refer to the
, visit the
and
refer to the
3.1.4
Power Supply
The power supply system is designed to support 1.8-V, 3.3-V, or 5-V operation when supplied from
the external VIN or USB connector. The selection between 1.8 V, 3.3 V, and 5 V is made through a 4-
pin jumper J9. A slider switch SW4 is used to select the power supply from the voltage regulator
(Cypress PMIC - MB39C011APFT-G-BND-ERE1), USB or a 3-V coin cell.
J9 settings for different voltages.
If the kit is used as a shield, it can be powered from the 5-V supply of the Arduino-compatible
baseboard.
shows the schematics of the power regulator circuit.
Table 3-2. Jumper J9 and switch SW4 Settings for Different Voltage Selections
Power Supply Source
VDD (in Volts)
SW4 (Position)
J9 (Jumper Position)
USB
1.8
REG
open
3.3
REG
1–2
5.0
USB
Any position except 2–3
1.8–3.3
REG
4–2
External VIN
1.8
REG
open
3.3
REG
1–2
5.0
REG
2–3
Arduino baseboard
1.8
REG
open
3.3
REG
1–2
Coin Cell
3.0
BAT
NA