CY8CKIT-046 PSoC® 4 L-Series Pioneer Kit Guide, Doc. #: 002-03344 Rev. *D
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Appendix
is also provided on the board. In addition, the I/Os from the module are also brought to the EZ-BLE
I/O header, marked 27 in
. When the shield board is snapped, the EZ-BLE
PRoC Module can be accessed through the Arduino shield I2C lines or through the EZ-BLE I/O
header. The footprint for a reset switch, SW5 (marked 23 in
), is also provided
on the shield board. This switch can be populated and used to reset the EZ-BLE device after the
board is snapped.
A.2.2.4
Character LCD Circuit (J23 - unpopulated)
The shield board of the PSoC 4 L-Series Pioneer Kit includes a 1x16 header footprint (J23) for inter-
facing a standard 2x16 character LCD (marked 20 in
). The character LCD
data and control lines are connected to the pins P11[6:0] of PSoC 4200L. A potentiometer, R39
(marked 19 in
), can be populated if required to control the LCD contrast. By
default, resistors R41 and R43 are populated to provide a default contrast for the LCD. These resis-
tors should be removed before populating R39. In addition, the kit also offers LCD power supply
selection through resistors R44 and R45. The LCD can operate at 5 V (R44 populated and R45
unpopulated) or 3.3 V (R44 unpopulated and R45 populated). By default, the 3.3 V power supply is
selected for the LCD operation.
A.2.2.5
µSD
Card Interface (J25 - unpopulated)
The kit includes a µSD connector, J25, footprint on the reverse side of the shield board. The µSD
card can be interfaced over SPI lines (P10[0] to P10[3]) of PSoC 4200L. The µSD connector shares
footprint and connections with the serial NOR Flash memory, U13. Refer to
for details on the µSD connector part number.
A.2.2.6
Serial NOR Flash Memory (U13 - unpopulated)
The kit includes a footprint to connect the
(Serial NOR Flash memory from Cypress),
U13. The NOR Flash memory shares footprint and SPI connections with the µSD connector, J25.
Only one of the two can be used on the board at a time.
A.2.2.7
Energy Harvesting PMIC (U12 - unpopulated)
The kit includes a footprint for
(an Energy Harvesting PMIC from Cypress), U12. The
Energy Harvesting PMIC provides supply to the EZ-BLE PRoC Module, U8. The PMIC can harvest
solar power, when connected to a solar cell through J28 and power EZ-BLE PRoC Module. The
S6AE101A stores power generated by the solar cell to an output capacitor using built-in switch
control. It turns on the power switching circuit while the capacitor voltage is within a preset maximum
and minimum range to supply energy to a load. If the power generated from solar cells is not
enough, energy can also be supplied similar to solar cells from a coin cell battery (V1) for auxiliary
power. The values of resistors (R100, R101, and R102) present in the schematic (
) are
selected to generate a maximum output voltage (VOUTH) of 3.25 V and minimum output voltage
(VOUTL) of 1.91 V. Refer to the “Setting the Operating Conditions” section in the
for details. Note that to use the PMIC, the EZ-BLE PRoC Module should be populated, all
the components shown in
should be populated, L4/L3 should be removed, and L5/L6
should be populated.
