Specifications

CY8C24223A, CY8C24423A
Document Number: 38-12029 Rev. *L Page 5 of 34
Additional System Resources
System Resources, some of which have been previously listed,
provide additional capability useful for complete systems.
Additional resources include a multiplier, decimator, low voltage
detection, and power on reset. Brief statements describing the
merits of each system resource follow:
■ 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 can
be generated using digital PSoC blocks as clock dividers.
■ A multiply accumulate (MAC) provides a fast 8-bit multiplier
with 32-bit accumulate, to assist in both general math as well
as digital filters.
■ The decimator provides a custom hardware filter for digital
signal processing applications including the creation of Delta
Sigma ADCs.
■ The I
2
C module provides 0 to 400 kHz communication over two
wires. Slave, master, and multi-master modes are all
supported.
■ LVD interrupts can 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 voltage reference provides an absolute
reference for the analog system, including ADCs and DACs.
PSoC Device Characteristics
Depending on your PSoC device characteristics, the digital and
analog systems can have a varying number of digital and analog
blocks. The following table lists the resources available for
specific PSoC device groups. The PSoC device covered by this
data sheet is highlighted in Ta bl e 1 .
Getting Started
For in-depth information, along with detailed programming
details, see the PSoC
®
Technical Reference Manual.
For up-to-date ordering, packaging, and electrical specification
information, see the latest PSoC device datasheets on the web.
Application Notes
Cypress application notes are an excellent introduction to the
wide variety of possible PSoC designs.
Development Kits
PSoC Development Kits are available online from 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), which is available online via www.cypress.com,
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 the CYPros Consultants web site.
Solutions Library
Visit our growing library of solution focused designs. Here you
can find various application designs that include firmware and
hardware design files that enable you to complete your designs
quickly.
Technical Support
Technical support – including a searchable Knowledge Base
articles and technical forums – is also available online. If you
cannot find an answer to your question, call our Technical
Support hotline at 1-800-541-4736.
Table 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
[2]
up to
64
4 16 12 4 4 12 2K 32K
CY8C27x43 up to
44
2 8 12 4 4 12 256
Bytes
16K
CY8C24x94 64 1 4 48 2 2 6 1K 16K
CY8C24x23A
[2]
up to
24
1 4 12 2 2 6 256
Bytes
4K
CY8C23x33 up to 1 4 12 2 2 4 256
Bytes
8K
CY8C21x34
[2]
up to
28
1428024
[3]
512
Bytes
8K
CY8C21x23
16 1 4 8 0 2 4
[3]
256
Bytes
4K
CY8C20x34
up to
28
0 0 28 0 0 3
[3, 4]
512
Bytes
8K
Notes
2. Automotive qualified devices available in this group.
3. Limited analog functionality.
4. Two analog blocks and one CapSense™ block.