Additional System Resources
CY8C23433, CY8C23533
Getting Started
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
■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
■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.
Table 1. PSoC Device Characteristics
PSoC Part | Digital IO | Digital Rows | Digital Blocks | Analog Inputs | Analog Outputs | Analog Columns | Analog Blocks | SAR8 ADC |
Number |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CY8C29x66 | up to | 4 | 16 | 12 | 4 | 4 | 12 | No |
| 64 |
|
|
|
|
|
|
|
CY8C27x43 | up to | 2 | 8 | 12 | 4 | 4 | 12 | No |
| 44 |
|
|
|
|
|
|
|
CY8C24x94 | 56 | 1 | 4 | 48 | 2 | 2 | 6 | No |
|
|
|
|
|
|
|
|
|
CY8C23X33 | up to | 1 | 4 | 12 | 2 | 2[1] | 4 | Yes |
| 26 |
|
|
|
|
|
|
|
CY8C24x23A | up to | 1 | 4 | 12 | 2 | 2 | 6 | No |
| 24 |
|
|
|
|
|
|
|
CY8C21x34 | up to | 1 | 4 | 28 | 0 | 2 | 4[2] | No |
| 28 |
|
|
|
|
|
|
|
CY8C21x23 | 16 | 1 | 4 | 8 | 0 | 2 | 4[2] | No |
CY8C20x34 | up to | 0 | 0 | 28 | 0 | 0 | 3[3] | No |
| 28 |
|
|
|
|
|
|
|
Notes
1.One complete column, plus one Continuous Time Block.
2.Limited analog functionality.
3.Two analog blocks and one CapSense.
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
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:
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
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.
Document Number: | Page 4 of 37 |
[+] Feedback
