CY8C20437S-24LKXCT Просмотр технического описания (PDF) - Cypress Semiconductor

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CY8C20437S-24LKXCT

1.8 V CapSense® Controller with SmartSense™ Auto-tuning 31 Buttons, 6 Sliders, Proximity Sensors

Cypress Semiconductor 

CY8C20xx7/S

Additional System Resources

System resources provide additional capability, such as

configurable I2C slave, SPI master/slave communication

interface, three 16-bit programmable timers, various system

resets supported by the M8C low voltage detection and power-

on reset. The merits of each system resource are listed here:

■ The I2C slave/SPI master-slave module provides 50/100/

400 kHz communication over two wires. SPI communication

over three or four wires runs at speeds of 46.9 kHz to 3 MHz

(lower for a slower system clock).

■ The I2C hardware address recognition feature reduces the

already low power consumption by eliminating the need for

CPU intervention until a packet addressed to the target device

is received.

■

The I2C enhanced slave interface

buffer to the external I2C master.

appears

Using a

as a 32-byte RAM

simple predefined

protocol, the master controls the read and write pointers into

the RAM. When this method is enabled, the slave does not stall

the bus when receiving data bytes in active mode. For usage

details, see the application note I2C Enhanced Slave Operation

- AN56007.

■ Low-voltage detection (LVD) interrupts can signal the

application of falling voltage levels, while the advanced power-

on reset (POR) circuit eliminates the need for a system

supervisor.

■ An internal reference provides an absolute reference for

capacitive sensing.

■ A register-controlled bypass mode allows the user to disable

the LDO regulator.

Getting Started

The quickest way to understand PSoC silicon is to read this

datasheet and then use the PSoC Designer Integrated

Development Environment (IDE). This datasheet 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 Technical Reference Manual for the CY8C20x37/

47/67/S PSoC devices.

For up-to-date ordering, packaging, and electrical specification

information, see the latest PSoC device datasheets on the web

at www.cypress.com/psoc.

Application Notes/Design Guides

Application notes and design guides are an excellent

introduction to the wide variety of possible PSoC designs. They

are located at www.cypress.com/gocapsense. Select

Application Notes under the Related Documentation tab.

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. See Development

Kits on page 31.

Training

Free PSoC and CapSense 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.

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.

Solutions Library

Visit our growing library of solution focused designs at

www.cypress.com/solutions. Here you can find various

application designs that include firmware and hardware design

files that enable you to complete your designs quickly.

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, create a technical support case

or call technical support at 1-800-541-4736.

Document Number: 001-69257 Rev. *I

Page 5 of 43

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