CY8C20234, CY8C20334
CY8C20434, CY8C20534
Document Number: 001-05356 Rev. *H
Page 3 of 34
Additional System Resources
System Resources provide additional capability useful to
complete systems. Additional resources include low voltage
detection and power on reset. Brief statements describing the
merits of each system resource are presented below.
■ The I2C slave or SPI master-slave module provides 50/100/400
kHz communication over two wires. SPI communication over
three or four wires run at speeds of 46.9 kHz to 3 MHz (lower
for a slower system clock).
■ Low Voltage Detection (LVD) interrupts signal the application
of falling voltage levels, while the advanced POR (Power On
Reset) circuit eliminates the need for a system supervisor.
■ An internal 1.8V reference provides an absolute reference for
capacitive sensing.
■ The 5V maximum input, 3V fixed output, low dropout regulator
(LDO) provides regulation for I/Os. A register controlled bypass
mode enables the user to disable the LDO.
Getting Started
The quickest way to understand PSoC silicon is to read this data
sheet and then use the PSoC Designer Integrated Development
Environment (IDE). This data sheet is an overview of the PSoC
integrated circuit and presents specific pin, register, and
electrical specifications.
For in depth information, along with detailed programming infor-
mation, see the PSoC® Programmable System-on-Chip
Technical Reference Manual for CY8C28xxx PSoC devices.
For up-to-date ordering, packaging, and electrical specification
information, see the latest PSoC device data sheets on the web
at www.cypress.com/psoc.
Application Notes
Application notes are an excellent introduction to the wide variety
of
possible
PSoC
designs.
They
are
located
here:
www.cypress.com/psoc. Select Application Notes under the
Documentation tab.
Development Kits
PSoC Development Kits are available online from Cypress at
www.cypress.com/shop and through a growing number of
regional and global distributors, which include Arrow, Avnet,
Digi-Key, Farnell, Future Electronics, and Newark.
Training
Free PSoC technical training (on demand, webinars, and
workshops) is available online at www.cypress.com/training. The
training covers a wide variety of topics and skill levels to assist
you in your designs.
Cypros Consultants
Certified PSoC Consultants offer everything from technical
assistance to completed PSoC designs. To contact or become a
PSoC Consultant go to www.cypress.com/cypros.
Solutions Library
Visit our growing library of solution focused designs at
www.cypress.com/solutions. Here you can find various appli-
cation designs that include firmware and hardware design files
that enable you to complete your designs quickly.
Technical Support
For assistance with technical issues, search KnowledgeBase
articles and forums at www.cypress.com/support. If you cannot
find an answer to your question, call technical support at
1-800-541-4736.
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