CY8C21634, CY8C21534CY8C21434, CY8C21334, CY8C21234
Document Number: 38-12025 Rev. *O Page 4 of 45

PSoC Device Characteristics

Depending on your PSoC device characteristics, the digital and
analog systems can have 16, 8, or 4 digital blocks and 12, 6, or
4 analog blocks. Table1 lists the resources available for specific
PSoC device groups. The PSoC device covered by this data
sheet is highlighted in this table.

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
details, 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.
Table 1. PSoC Device Characteristics
PSoC Part
Number
Digital
IO
Digital
Rows
Digital
Blocks
Analog
Inputs
Analog
Outputs
Analog
Columns
Analog
Blocks
SRAM
Size
Flash
Size
CY8C29x66 up to
64
416 12 4 4 12 2K 32K
CY8C27x43 up to
44
2812 4 4 12 256
Bytes
16K
CY8C24x94 56 1 4 48 2 2 6 1K 16K
CY8C24x23A up to
24
1412 226256
Bytes
4K
CY8C21x34 up to
28
1428 0 2 4[1] 512
Bytes
8K
CY8C21x23 16 1 4 8 0 2 4[1] 256
Bytes
4K
CY8C20x34 up to
28
0028 0 0 3[2] 512
Bytes
8K
Notes
1. Limited analog functionality.
2. Two analog blocks and one CapSense.
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