Blueberry Board
(CY27EE16 Candy Board)
CY30703
Cypress Semiconductor Corporation
3901 North First Street
San Jose
,
CA 95134
408-943-2600
Document #: 38-07535 Rev. **
Revised May 19, 2003
Features
Benefits
Demonstrates CY27EE16 capabilities
See actual waveforms from a JEDEC file you just created
CyberClocks
Support
Easy-to-use software configuration support, program
on-the-fly in seconds
USB interface
Simple plug and play interface
Built-in crystal
No external reference is required for use
Built in test points
Easily accessible probe points
Compact design
Easily portable, like a piece of candy
U
SB Connec
t
i
on
D +
D -
GND
5V
US
B
C
Y
7C63231A
External
VCC - 5V
External
GND
Status LED
CY27EE16
SDAT
SCLK
VDD
AVDD
VDDL
10MHz XTAL
CLK1
CLK2
CLK3
CLK5
CLK6
Logic Block Diagram -- CY30703
CLK1
CLK2
CLK5
CLK4
CLK3
GND
External
GND
CLK6
5V
External
Board Layout
Regulator
5V to 3.3V
OE
CLK4
OE/PDM
VCXO/WP
CY30703
Document #: 38-07535 Rev. **
Page 2 of 4
Overview
The Blueberry board can be used to serially program the
volatile and non-volatile memory of the CY27EE16, and to
measure the actual performance of the user's configuration.
The data sheet has a broad jitter specification of typically 250
ps, but there are many configurations that will have much
higher performance, and others in which the performance is
less ideal. The Blueberry board allows a prospective user to
see real performance, or a systems engineer to see output
phase relationships and thereby get a better feel for what the
CY27EE16 is capable of doing. All a user needs is a computer
running CyberClocks with a USB connection and an oscillo-
scope to look at waveforms, or just an oscilloscope and 5V
power supply to look at the flash-programmed configurations
in the CY27EE16.
CY30703 Blueberry Board
The CY30703 Blueberry board is a demo board that features
the CY27EE16 in-system programmable clock chip. The
boards are USB-compatible and can run stand-alone or with
our CyberClocks software.
How to Use the Boards
In order to program the Candy boards, users must have
Windows
98 Second Edition OS or later installed on their
computer. The user will need to plug the device into their USB
port; Windows should be able to detect and install the appro-
priate drivers automatically. If you are using Windows 98 SE,
you will need the Windows installation disk to install appro-
priate drivers.
Each Blueberry board features a preprogrammed CY27EE16
embedded onto the board. The default start-up condition has
the reference frequency on clock 1. The user can vary
frequencies on the outputs by programming the part with
CyberClocks. When using an external power supply, do not
connect the board to the USB port, as it may damage your
computer and candy board.
SMA Connections
Each clock output probe point has the ground plane exposed
on either side to enable a user to solder on a SMA connector.
Due to space restrictions, only every other clock output can
have a SMA connector.
Using CyberClocks with the Blueberry Board
Users can also program the part using our CyberClocks
software which is found on the web. The CY27EE16 device is
under the ISR field of the main CyberClocks user interface.
There are two ways the user can program the part on the
candy boards. The user can either open up a new or existing
CY27EE16 JEDEC file or go under options and select candy
board set-up to program the part.
Using a CY27EE16 JEDEC File in CyberClocks to Program
the Part
The reference embedded on the board is a 10-MHz crystal,
therefore users should input 10-MHz as their REF frequency
when trying to program the part on-board with CyberClocks.
With the first option, the user can program the part on the
candy board by opening a new or existing CY27EE16 JEDEC
file. Once the candy board is plugged in, a send button should
appear on the bottom of the Advanced Mode interface next to
the calculate button. Once the desired configuration is set, the
user should click on calculate and then click on the send button
to send the program to the board. The LED on the board
should blink and then stop, indicating that it has received the
data.
This option will only allow for the volatile memory portion of the
device to be programmed.
Using the Candy Board Set-up in CyberClocks to Program
the Part
Under the Options menu, select Candy Board Set-up. This will
bring up the Candy Board Set-up window. Select the
CY27EE16 under Candy Board List.The current configuration
shown in the CY27EE16 user interface will be automatically
loaded. If the user desires to program the board with a file that
is not the currently opened version, they can do so by clicking
on Load JEDEC. The user can select a file that is stored on
the computer with which to program the candy board.
In this option, the user can click on the "Write to non-volatile
memory" box. Doing so will program the EEPROM memory of
the CY27EE16 and allow the user to power down the board
and still retain its new configuration.
CY27EE16 Input Pins
The OE/PDM pin will always be pulled high. The software will
override the user input settings and set the VCXO/WP pin to
be WP in order to always enable EEPROM programming into
the device.
Device Address
The software will override any user changes to the I
2
C device
addresses and use the default values. This is to insure that the
board will always work with CyberClocks.
CY30703
Document #: 38-07535 Rev. **
Page 3 of 4
Cypress Semiconductor Corporation, 2003. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
Ordering Information
Purchase of I
2
C components from Cypress, or one of its sublicensed Associated Companies, conveys a license under the Philips
I
2
C Patent Rights to use these components in an I
2
C system, provided that the system conforms to the I
2
C Standard Specification
as defined by Philips. Windows is a registered trademark of Microsoft Corporation. CyberClocks is a trademark of Cypress
Semiconductor. All product and company names mentioned in this document are the trademarks of their respective holders.
Figure 1. Candy Board Set-up Window
Ordering Code
Package Name
Package Type
Operating Range
Operating Voltage
CY30703
25c
5V
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