Product category:
Programmable Logic Devices
News Release from: Cypress Semiconductor | Subject: CY8C24794-24LFXI
Edited by the Electronicstalk Editorial
Team on 12 July 2005
Programmable mixed signal chip takes USB
onboard
The CY8C24794-24LFXI is the newest member of the Cypress PSoC mixed-signal array family and is the first PSoC device to integrate a USB 2.0 serial interface engine.
The CY8C24794-24LFXI is the newest member of the Cypress PSoC mixed-signal array family and is the first PSoC device to integrate a USB 2.0 serial interface engine (SIE), offering a sophisticated USB implementation with shorter design cycles, reduced component and bill-of-material costs and board space and power consumption savings The newest PSoC device also includes Cypress's CapSense technology, offering an efficient solution to replace mechanical switches and controls with simple, touch-sensitive controls
This article was originally published on Electronicstalk on 9 Jul 2008 at 8.00am (UK)
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The CY8C24794-24LFXI is ideal for human interface devices (HIDs), including mice, keyboards, gamepads and joysticks, as well as uninterruptible power supply (UPS) and other PC peripheral applications.
The CY8C24794-24LFXI includes a full-speed (12Mbit/s) USB 2.0 SIE, including a 0.25% accurate clock with an integrated oscillator that meets USB 2.0 clocking specifications and requires no external crystal, reducing component and pin counts.
The device provides four unidirectional endpoints and one bidirectional control endpoint to support control, interrupt, isochronous, and bulk transfer types, as well as flexible synchronisation.
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It offers up to 48 analogue inputs, so no external analogue multiplexer is required for applications such as laptop touchpads using CapSense technology.
In addition to six standard PSoC configurable analogue blocks and four digital blocks, it provides 16Kbyte of Flash program storage, 1Kbyte of SRAM data memory and an easy-to-use eight-channel DMA to a dedicated 256byte buffer for the USB SIE.
The CY8C24794 is supported by development software that allows basic implementation in less than an hour.
This software includes a user module that allows very rapid design implementation.
The USBFS protocol user module generates application programming interfaces (APIs) for easy development and includes a setup wizard.
The user module and its corresponding APIs are clearly documented in a user module datasheet.
A HID module with wizard is also included.
"PSoC products provide customers with quick, embedded mixed signal solutions".
"As the market leader in USB, Cypress is now offering PSoC customers a USB interface, essentially for free", said Steve Gerber, Director of Product Marketing for Cypress's PSoC Business Unit.
"Now any PSoC-based solution can be seamlessly interfaced to USB with no extra components, pins or cost".
"Cypress has combined my two favourite technologies, USB and the PSoC architecture, to form a winning combination", said John Hyde, author of "USB design by example", a leading textbook on USB.
"As a beta user of the product, I appreciated the flexibility and wider range of USB solutions that this allows me to create".
"The integrated tool suite also sped development and simplified testing".
The CY8C24794-24LFXI is available in a 56-lead (8 x 8mm) MLF package.
It operates between 3.0 and 5.25V and from -40 to +85C.
The product is in production and is priced below $2.00 each in high-volume quantities.
The CY8C24794 is supported with a CY3214-PSoCEvalUSB evaluation board.
The CY3214-PSoCEvalUSB is priced at $99 (suggested resale).
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