CY8C24094, CY8C24794CY8C24894, CY8C24994
Document Number: 38-12018 Rev. *M Page 4 of 47
3.1 Additional System Resources
System Resources, provide additional capability useful to
complete systems. Additional resources include a multiplier,
decimator, low voltage detection, and power on reset. Brief state-
ments describing the merits of each resource follow.
■Full-Speed USB (12 Mbps) with 5 configurable endpoints and
256 bytes of RAM. No external components required except
two series resistors. Wider than commercial temperature USB
operation (-10°C to +85°C).
■Digital clock dividers provide three customizable clock
frequencies for use in applications. The clocks can be routed
to both the digital and analog systems. Additional clocks are
generated using digital PSoC blocks as clock dividers.
■Two multiply accumulates (MACs) provide fast 8-bit multipliers
with 32-bit accumulate, to assist in both general math and
digital filters.
■Decimator provides a custom hardware filter for digital signal
processing applications including creation of Delta Sigma
ADCs.
■The I2C module provides 100 and 400 kHz communication over
two wires. Slave, master, multi-master are supported.
■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 1.3V reference provides an absolute reference for
the analog system, including ADCs and DACs.
■Versatile analog multiplexer system.
3.2 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. The following table lists the resources available
for specific PSoC device groups. The device covered by this data
sheet is shown in the highlighted row of the table
4. 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.
4.1 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.
4.2 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.
4.3 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.
4.4 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.
4.5 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.
4.6 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 3-1. PSoC Device Characteristics
PSoC Part
Number
Digital
I/O
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 2 8 12 4 4 12 256
Bytes 16K
CY8C24x94 56 1 4 48 2 2 6 1K 16K
CY8C24x23A up to
24 1 4 12 2 2 6 256
Bytes 4K
CY8C21x34 up to
28 1428024
[1] 512
Bytes 8K
CY8C21x23 16 1 4 8 0 2 4[1] 256
Bytes 4K
CY8C20x34 up to
28 0 0 28 0 0 3[2] 512
Bytes 8K
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