CY8CKIT-030 PSoC® 3 Development Kit Guide, Doc. # 001-61038 Rev. *J
24
Hardware
If you are using the regulator power supply from the board to power the external modules, both the
P-MOS Q4 and Q5 will always be in the On state, allowing the flow of current with a maximum of
22 mV drop across the circuit when the current consumed by the external module is 150 mA.
Note
The working of protection circuit on the 3.3-V and 5-V lines is as described. For the purpose of
explanation, the annotation of 3.3-V protection circuitry (
Figure 4-9
) is used.
4.2.7
PSoC 3 Development Kit Expansion Ports
The PSoC 3 Development Kit has two expansion ports, port D and port E, each with their own
unique features.
4.2.7.1
Port D
This is the miscellaneous port designed to handle CapSense-based application boards and digital
application boards. The signal routing to this port adheres to the stringent requirements needed to
provide good performance CapSense. This port can also be used for other functions and expansion
board kits (EBKs).
This port is not designed for precision analog performance. The pins on the port are functionally
compatible to port B of the PSoC Development Kit. Any project made to function on port B of the
PSoC Development Kit can be easily ported over to port D on this board. A caveat to this is that
there is no opamp available on this port; therefore, opamp-based designs are not recommended for
use on this port.
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
