Cypress Semiconductor CY8C21534 Especificaciones descargar pdf (Pagina 19)

Once the blocks are set and the pin routes have been placed, global settings can be

configured. Figure 9 shows the available global settings in the PSoC designer.

Figure 9: Global Settings in PSoC Designer. Screenshot [3].

As can be seen in figure 9, in the global settings the user can set many global controls

of the system, such as the speed of the Central Processing Unit (CPU) clock. The range

of this will differ in various models. The clock divider variables VC1, VC2, and VC3 can

be configured in the case that a lower clock speed is needed for one of the blocks

in the program. The system can be configured to run with three volts or five volts.

The user can set which level they would like the reference voltage to be, as well as

several other options given to better fit the needed parameters of the project.

Once the hardware and Global Settings are prepared, the user can then add further

functionality by the use of the C programming language. Additionally, included

files which are written in assembly can be modified to the user's needs. Many of

the hardware settings that were previously made can be programmed in the

code to change while the microcontroller is in operation. For example, for this

project the digital communications to the SD card needs to be below 400 KHz for

initialization of the card but then sped up to a much faster speed for the data

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Cypress Semiconductor CY8C21534 Especificaciones Pagina 19