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CY8C23433, CY8C23533
Document Number: 001-44369 Rev. *B Page 4 of 37
Additional System Resources
System Resources, some of which are listed in the previous
sections, provide additional capability useful to 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 and
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 the PSoC device characteristics, the digital and
analog systems can have 16, 8, or 4 digital blocks and 12, 6, or
3 analog blocks. The following table lists the resources available
for specific PSoC device groups.
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 Mixed-Signal
Array Technical Reference Manual.
For latest Ordering, Packaging, and Electrical Specification
information, refer the latest PSoC device data sheets on the web
at http://www.cypress.com/psoc.
To determine which PSoC device meets your requirements,
navigate through the PSoC Decision Tree in the Application Note
AN2209 at http://www.cypress.com and select Application Notes
under the Design Resources.
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/onlinestore.
Technical Training Modules
Free PSoC technical training modules are available for users
new to PSoC. Training modules cover designing, debugging,
advanced analog and CapSense. Go to
http://www.cypress.com.
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 at the top 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 4-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
http://www.cypress.com/psocapnotes.
Table 1. PSoC Device Characteristics
PSoC Part
Number
Digital
IO
Digital
Rows
Digital
Blocks
Analog
Inputs
Analog
Outputs
Analog
Columns
Analog
Blocks
SAR8
ADC
CY8C29x66 up to
64
4 16 12 4 4 12 No
CY8C27x43
up to
44
2 8 12 4 4 12 No
CY8C24x94 56 1 4 48 2 2 6
No
CY8C23X33 up to
26
1 4 12 2 2
[1]
4 Yes
CY8C24x23A up to
24
1412226No
CY8C21x34 up to
28
1428024
[2]
No
CY8C21x23
16 1 4 8 0 2 4
[2]
No
CY8C20x34
up to
28
0 0 28 0 0 3
[3]
No
Notes
1. One complete column, plus one Continuous Time Block.
2. Limited analog functionality
.
3. Two analog blocks and one CapSense.
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