CY8C24223A, CY8C24423A
Document Number: 3-12029 Rev. *E Page 4 of 31
Additional System Resources
System Resources, some of which have been previously listed,
provide additional capability useful to complete systems.
Additional resources include a multiplier, decimator, switch mode
pump, 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 I2C module provides 100 and 400 kHz communication over
two wires. Slave, master, and multi-master modes are all
supported.
■Low Voltage Detection (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 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 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 PSoC device covered by
this data sheet is highlighted.
Getting Started
The quickest path to understanding the PSoC silicon is by
reading this data sheet and using 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 information, refer the PSoC Program-
mable Sytem-on-Chip Technical Reference Manual.
For up-to-date Ordering, Packaging, and Electrical Specification
information, refer the latest PSoC device data sheets on the web
at http://www.cypress.com/psoc.
Development Kits
Development Kits are available from the following distributors:
Digi-Key, Avnet, Arrow, and Future. The Cypress Online Store
contains development kits, C compilers, and all accessories for
PSoC development. Go to the Cypress Online Store web site at
http://www.cypress.com, click the Online Store shopping cart
icon at the bottom of the web page, and click PSoC (Program-
mable System-on-Chip) to view a current list of available items.
Technical Training
Free PSoC technical training is available for beginners and is
taught by a marketing or application engineer over the phone.
PSoC training classes cover designing, debugging, advanced
analog, and application-specific classes covering topics, such as
PSoC and the LIN bus. Go to http://www.cypress.com, click on
Design Support located on the left side of the web page, and
select Technical Training for more details.
Consultants
Certified PSoC Consultants offer everything from technical
assistance to completed PSoC designs. To contact or become a
PSoC Consultant go to http://www.cypress.com, click on Design
Support located on the left side of the web page, and select
CYPros Consultants.
Technical Support
PSoC application engineers take pride in fast and accurate
response. They can be reached with a four-hour guaranteed
response at http://www.cypress.com/support.
Application Notes
A long list of application notes can assist you in every aspect of
your design effort. To view the PSoC application notes, go to the
http://www.cypress.com web site and select Application Notes
under the Design Resources list located in the center of the web
page. Application notes are listed by date as default.
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 49 1 4 48 2 2 6 1K 16K
CY8C24x23 up to
24 1412 2 2 6 256
Bytes 4K
CY8C24x23A up to
24 1412 2 2 6 256
Bytes 4K
CY8C21x34 up to
28 1428 0 2 4a
a. Limited analog functionality.
512
Bytes 8K
CY8C21x23 16 1 4 8 0 2 4a256
Bytes 4K
[+] Feedback