Cypress CY25423SXCT Three pll programmable clock generator with spread spectrum Datasheet

CY25403/CY25423/CY25483
Three PLL Programmable Clock Generator
with Spread Spectrum
Features
■
Three fully integrated phase-locked loops (PLLs)
■
Three clock outputs with programmable drive strength
■
Input frequency range
❐ External crystal: 8 to 48 MHz
❐ External reference: 8 to 166 MHz clock
■
Glitch-free outputs while frequency switching
■
8-pin SOIC package
■
Commercial and Industrial temperature ranges
■
Reference clock input voltage range
❐ 1.8 V for CY25403/CY25423/CY25483
Benefits
■
Wide operating output frequency range
❐ 3 to 166 MHz
■
Multiple high performance PLLs allow synthesis of unrelated
frequencies
■
Programmable spread spectrum with center and down spread
option and lexmark and linear modulation profiles
■
■
VDD supply voltage options:
❐ 2.5 V, 3.0 V, and 3.3 V for CY25403/CY25423/CY25483
Nonvolatile programming for personalization of PLL
frequencies, spread spectrum characteristics, drive strength,
crystal load capacitance, and output frequencies
■
■
Selectable output clock voltages independent of VDD supply:
❐ 2.5 V, 3.0 V, and 3.3 V for CY25403/CY25423/CY25483
Application specific programmable EMI reduction using Spread
Spectrum for clocks
■
Programmable PLLs for system frequency margin tests
■
Frequency select feature with option to select four different
frequencies
■
Meets critical timing requirements in complex system designs
■
Power-down, output enable, and SS ON/OFF controls
■
Suitability for PC, consumer, portable, and networking
applications
■
Low jitter, high accuracy outputs
■
Capable of Zero PPM frequency synthesis error
■
Ability to synthesize nonstandard frequencies with Fractional-N
capability
■
Uninterrupted system operation during clock frequency switch
■
Application compatibility in standard and low power systems
Block Diagram
Crossbar
Switch
XIN/
EXCLKIN
XOUT
OSC
PLL1
and
and
FS1
CLK1
(SS)
Dividers
MUX
FS0
Output
Drive
PLL 2
(SS)
Control
CLK2
(No SS)
Strength
Logic
Control
PLL3
(SS)
CLK3
(SS)
SSON
PD#/OE
Cypress Semiconductor Corporation
Document #: 001-12564 Rev. *F
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised July 18, 2011
CY25403/CY25423/CY25483
Contents
General Description ......................................................... 4
Configurable PLLs ....................................................... 4
Input Reference Clocks ............................................... 4
VDD Power Supply Options ........................................ 4
Spread Spectrum Control ............................................ 4
Frequency Select ........................................................ 4
Glitch-Free Frequency Switch ..................................... 4
PD#/OE Mode ............................................................. 4
Output Drive Strength .................................................. 4
Generic Configuration and Custom Frequency ........... 4
Absolute Maximum Conditions ....................................... 5
DC Electrical Specifications ............................................ 6
AC Electrical Specifications ............................................ 7
Recommended Crystal Specification
for SMD Package .............................................................. 7
Document #: 001-12564 Rev. *F
Recommended Crystal Specification
for Thru-Hole Package ..................................................... 8
Test and Measurement Setup .......................................... 8
Voltage and Timing Definitions ....................................... 8
Ordering Information ........................................................ 9
Possible Configurations ............................................... 9
Ordering Code Definitions ......................................... 10
Package Drawing and Dimensions ............................... 10
Acronyms ........................................................................ 11
Document Conventions ................................................. 12
Units of Measure ....................................................... 12
Sales, Solutions, and Legal Information ...................... 14
Worldwide Sales and Design Support ....................... 14
Products .................................................................... 14
PSoC Solutions ......................................................... 14
Page 2 of 14
CY25403/CY25423/CY25483
Table 1. Device Selector Guide
Device
Crystal Input
EXCKLKIN Input
CY25403/CY25423/CY25483 Yes
1.8 V LVCMOS
VDD
2.5 V, 3.0 V, 3.3 V
Figure 1. Pin Diagram - CY25403/CY25423/CY25483 8-Pin SOIC
XIN/
EXCLKIN
1
VDD
2
CLK1
CLK2/FS0
8
XOUT
7
GND
3
6
CLK3/SSON
4
5
PD#/OE/FS1
CY25403
Table 2. Pin Definition - CY25403/CY25423/CY25483 (2.5 V, 3.0 V, or 3.3 V Supply)
Pin Number
Name
IO
Description
1
XIN/EXCLKIN Input
Crystal input or 1.8 V external clock input
2
VDD
Power
Power supply: 2.5 V, 3.0 V, or 3.3 V
3
CLK1
Output
Programmable clock output with spread spectrum
4
CLK2/FS0
Output/Input
Multifunction programmable pin: programmable clock output with no spread spectrum
or frequency select pin
5
PD#/OE/FS1
Input
Multifunction programmable pin: power-down, output enable, or frequency select pin
6
CLK3/SSON
Output/Input
Multifunction programmable pin: programmable clock output with spread spectrum or
spread spectrum ON/OFF control pin
7
GND
Power
Power supply ground
8
XOUT
Output
Crystal output
Document #: 001-12564 Rev. *F
Page 3 of 14
CY25403/CY25423/CY25483
General Description
Configurable PLLs
The CY25403/CY25423/CY25483 have three programmable
PLLs that can be used to generate output frequencies ranging
from 3 to 166 MHz. The advantage of having three PLLs is that
a single device generates up to three independent frequencies
from a single crystal.
Input Reference Clocks
The input reference clock can be either a crystal or a clock signal,
for CY25403/CY25423/CY25483. The input frequency range for
crystal (XIN) is 8 MHz to 48 MHz and that for external reference
clock (EXCLKIN) is 8 MHz to 166 MHz. The voltage range of the
reference clock input CY25403/CY25423/CY25483 is 1.8 V. This
gives user an option for this device to be compatible for different
input clock voltage levels in the system.
VDD Power Supply Options
These devices have programmable power supply options. The
CY25403/CY25423/CY25483 is a high voltage part that can be
programmed to operate at any voltage 2.5 V, 3.0 V, or 3.3 V.
Output Source Selection
These devices have programmable input sources for each of its
clock outputs. There are four available clock sources and these
clock sources are: XIN/EXCLKIN, PLL1, PLL2, and PLL3.
Output clock source selection is done by using four out of four
crossbar switch. Thus, any one of these four available clock
sources can be arbitrarily selected for the clock outputs. This
gives user a flexibility to have up to three independent clock
outputs.
switched using output dividers. This feature enables
uninterrupted system operation while clock frequency is being
switched.
PD#/OE Mode
Multifunction pin PD#/OE/FS1 (Pin 5) can be programmed to
operate as either frequency select (FS1), power-down (PD#) or
output enable (OE) mode. PD# is a low-true input. If activated it
shuts off the entire chip, resulting in minimum power
consumption for the device. Setting this signal high brings the
device in the operational mode with default register settings.
When this pin is programmed as output enable (OE), clock
outputs can be enabled or disabled using OE (pin 5). Individual
clock outputs can be programmed to be sensitive to this OE pin.
Output Drive Strength
The DC drive strength of the individual clock output can be
programmed for different values. Table 3 shows the typical rise
and fall times for different drive strength settings.
Table 3. Output Drive Strength
Output Drive Strength
Rise/Fall Time (ns)
(Typical Value)
Low
6.8
Mid Low
3.4
Mid High
2.0
High
1.0
Spread Spectrum Control
Generic Configuration and Custom Frequency
Two of the three PLLs (PLL2 and PLL3) have spread spectrum
capability for EMI reduction in the system. The device uses a
Cypress proprietary PLL and spread spectrum clock (SSC)
technology to synthesize and modulate the frequency of the PLL.
The spread spectrum feature can be turned on or off using a
multifunction control pin (CLK3/SSON). It can be programmed to
either center spread range from ±0.125% to ±2.50% or down
spread range from –0.25% to –5.0% with Lexmark or Linear
profile.
There is a generic set of output frequencies available from the
factory that can be used for the device evaluation purposes. The
device, CY25403/CY25423/CY25483 can be custom
programmed to any desired frequencies and listed features. For
customer specific programming, please contact local Cypress
Field Application Engineer (FAE) or sales
representative.
Frequency Select
Each PLL can be programmed for up to four different
frequencies. There are two multifunction programmable pins,
CLK2/FS0 and PD#/OE/FS1 which if programmed as frequency
select inputs, can be used to select among these arbitrarily
programmed frequency settings. Each output has
programmable output divider options.
Glitch-Free Frequency Switch
When the frequency select pin, FS(1:0) is used to switch
frequency, the outputs are glitch-free provided frequency is
Document #: 001-12564 Rev. *F
Page 4 of 14
CY25403/CY25423/CY25483
Absolute Maximum Conditions
Parameter
Description
Condition
VDD
Supply voltage for CY25403/CY25423/CY25483 –
VIN
Input voltage for CY25403/CY25423/CY25483
TS
Temperature, Storage
Min
Max
Unit
–0.5
4.5
Relative to VSS
–0.5
VDD+0.5 V
Non Functional
–65
+150
°C
10
ppm
ESDHBM
ESD protection (human body model)
JEDEC EIA/JESD22-A114-E
2000
UL-94
Flammability rating
V-0 at 1/8 in.
–
MSL
Moisture sensitivity level
SOIC package
–3
V
Volts
–
Recommended Operating Conditions
Parameter
Description
Min
Typ
Max
Unit
VDD
VDD operating voltage for CY25403/CY25423/CY25483
2.25
–
3.60
V
TAC
Commercial ambient temperature
0
–
+70
°C
TAI
Industrial ambient temperature
–40
--
+85
°C
CLOAD
Maximum load capacitance
–
–
15
pF
tPU
Power-up time for all VDD to reach minimum specified voltage
(power ramps must be monotonic)
0.05
–
500
ms
Document #: 001-12564 Rev. *F
Page 5 of 14
CY25403/CY25423/CY25483
DC Electrical Specifications
Parameter
VOL
Description
Output low voltage
Conditions
IOL = 2 mA, drive strength = [00]
Min
Typ
Max
Unit
–
–
0.4
V
VDD 0.4
–
–
V
IOL = 3 mA, drive strength = [01]
IOL = 7 mA, drive strength = [10]
IOL = 12 mA, drive strength = [11]
VOH
Output high voltage
IOH = –2 mA, drive strength = [00]
IOH = –3 mA, drive strength = [01]
IOH = –7 mA, drive strength = [10]
IOH = –12 mA, drive strength = [11]
VIL1
Input low voltage of PD#/OE, FS0, FS1
and SSON
–
–
0.2*VDD V
VIL2
Input low voltage of EXCLKIN
–
–
0.18
V
VIH1
Input high voltage of PD#/OE, FS0, FS1
and SSON
0.8*VDD –
–
V
VIH2
Input high voltage of EXCLKIN for
CY25403/CY25423/CY25483
1.62
–
2.2
V
IIL
Input low current, PD#/OE/FS1
VIN = 0 V
–
–
10
µA
IIH
Input high current, PD#/OE/FS1
VIN = VDD
–
–
10
µA
IILDN
Input low current, SSON and FS0 pins
VIN = 0 V
(Internal pull-down resistor = 160k typ.)
–
–
10
µA
IIHDN
Input high current, SSON and FS0 pins VIN = VDD
(Internal pull-down resistor = 160k typ.)
14
–
36
µA
RDN
Pull-down resistor of CLK1, CLK2/FS0
and CLK3/SSON pins
Output clocks in off state by setting
PD# = Low
100
160
250
k
IDD[1,2 ]
Supply current for
CY25403/CY25423/CY25483
PD# = High, No load
–
22
–
mA
IDDS[1]
Standby current
PD# = Low
–
3
–
µA
CIN[1]
Input capacitance
SSON, PD#/OE/FS1 and FS0 pins
–
–
7
pF
Notes
1. Guaranteed by design but not 100% tested.
2. Configuration dependent.
Document #: 001-12564 Rev. *F
Page 6 of 14
CY25403/CY25423/CY25483
AC Electrical Specifications
Parameter
Description
Conditions
Min
Typ
Max
Unit
FIN (crystal)
Crystal frequency, XIN
–
8
–
48
MH
z
FIN (clock)
Input clock frequency (EXCLKIN)
–
8
–
166
MH
z
FCLK
Output clock frequency
–
3
–
166
MH
z
DC
Output duty cycle, all clocks except ref
out
Duty Cycle is defined in Figure 3 on page 8;
t1/t2, measured at 50% of VDD
45
50
55
%
DC
Ref out duty cycle
Ref In Min 45%, Max 55%
40
–
60
%
[3]
Output rise/fall time
Measured from 20% to 80% of VDD, as
shown in Figure 4 on page 8, CL = 15 pF,
drive strength [00]
–
6.8
–
ns
TRF2[3]
Output rise/fall time
Measured from 20% to 80% of VDD, as
shown in Figure 4 on page 8, CL = 15 pF,
drive strength [01]
–
3.4
–
ns
TRF3[3]
Output rise/fall time
Measured from 20% to 80% of VDD, as
shown in Figure 4 on page 8, CL = 15 pF,
drive strength [10]
–
2.0
–
ns
TRF4[3]
Output rise/fall time
Measured from 20% to 80% of VDD, as
shown in Figure 4 on page 8, CL = 15 pF,
drive strength [11]
–
1.0
–
ns
TCCJ[3, 4]
Cycle-to-cycle jitter (peak)
Configuration dependent. See
Table Configuration Example for C-C Jitter
–
100
–
ps
TLOCK[3]
PLL lock time
Measured from 90% of the applied power
supply level
–
1
3
ms
TRF1
Configuration Example for C-C Jitter
CLK1 Output
CLK2 Output
CLK3 Output
Ref. Frequency
(MHz)
Freq. (MHz)
C-C Jitter Typ
(ps)
Freq. (MHz)
C-C Jitter Typ
(ps)
Freq. (MHz)
C-C Jitter Typ
(ps)
14.3181
8.0
134
166
103
48
92
19.2
74.25
99
166
94
8
91
27
48
67
27
109
166
103
48
48
93
27
123
166
137
Recommended Crystal Specification for SMD Package
Parameter
Description
Range 1 Range 2 Range 3 Unit
Fmin
Minimum frequency
8
14
28
MHz
Fmax
Maximum frequency
14
28
48
MHz
R1
Motional resistance (ESR)
135
50
30

C0
Shunt capacitance
4
4
2
pF
CL
Parallel load capacitance
18
14
12
pF
DL(max)
Maximum crystal drive level
300
300
300
µW
Document #: 001-12564 Rev. *F
Page 7 of 14
CY25403/CY25423/CY25483
Recommended Crystal Specification for Thru-Hole Package
Parameter
Description
Range 1 Range 2 Range 3 Unit
Fmin
Minimum frequency
8
14
24
MHz
Fmax
Maximum frequency
14
24
32
MHz
R1
Motional resistance (ESR)
90
50
30

C0
Shunt capacitance
7
7
7
pF
CL
Parallel load capacitance
DL(max)
Maximum crystal drive level
18
12
12
pF
1000
1000
1000
µW
Test and Measurement Setup
Figure 2. Test and Measurement Setup
V DD
0.1 F
Outputs
C LOAD
DUT
GND
Voltage and Timing Definitions
Figure 3. Duty Cycle Definition
t1
t2
V DD
50% of VDD
Clock
Output
0V
Figure 4. Rise Time = TRF, Fall Time = TRF
T
RF
T
RF
V DD
80% of V DD
Clock
Output
20% of VDD
0V
Notes
3. Guaranteed by design but not 100% tested.
4. Configuration dependent.
Document #: 001-12564 Rev. *F
Page 8 of 14
CY25403/CY25423/CY25483
Ordering Information
Part Number
Type
Package
Supply Voltage
Production Flow
Pb-free
CY25403SXC
Field Programmable
8-pin SOIC
2.5 V, 3.0 V, or 3.3 V Commercial, 0 °C to 70 °C
CY25403SXCT
Field Programmable
8-pin SOIC -Tape and Reel 2.5 V, 3.0 V, or 3.3 V Commercial, 0 °C to 70 °C
CY25423SXC
Field Programmable
8-pin SOIC
1.8 V
Commercial, 0 °C to 70 °C
Commercial, 0 °C to 70 °C
CY25423SXCT
Field Programmable
8-pin SOIC -Tape and Reel 1.8 V
CY25483SXC
Field Programmable
8-pin SOIC
CY25483SXCT
Field Programmable
8-pin SOIC -Tape and Reel 2.5 V, 3.0 V, or 3.3 V Commercial, 0 °C to 70 °C
CY25403SXI
Field Programmable
8-pin SOIC
CY25403SXIT
Field Programmable
8-pin SOIC -Tape and Reel 2.5 V, 3.0 V, or 3.3 V Industrial, –40 °C to +85 °C
CY25423SXI
Field Programmable
8-pin SOIC
CY25423SXIT
CY25483SXI
CY25483SXIT
2.5 V, 3.0 V, or 3.3 V Commercial, 0 °C to 70 °C
2.5 V, 3.0 V, or 3.3 V Industrial, –40 °C to +85 °C
1.8 V
Industrial, –40 °C to +85 °C
Field Programmable
8-pin SOIC -Tape and Reel 1.8 V
Industrial, –40 °C to +85 °C
Field Programmable
8-pin SOIC
Field Programmable
8-pin SOIC -Tape and Reel 2.5 V, 3.0 V, or 3.3 V Industrial, –40 °C to +85 °C
2.5 V, 3.0 V, or 3.3 V Industrial, –40 °C to +85 °C
Programmer
CY3675-CLKMAKER1
Programming Kit
CY3675-SOIC8A
Socket Adapter Board, for programming CY25402, CY25403, CY25422,
CY25423, CY25482, and CY25483
Some product offerings are factory programmed customer specific devices with customized part numbers. The Possible
Configurations table shows the available device types, but not complete part numbers. Contact your local Cypress FAE of Sales
Representative for more information
Possible Configurations
Part Number[5]
Type
VDD(V)
Production Flow
Pb-free
CY25403/CY25423/CY254 8-pin SOIC
83SXC-xxx
Supply Voltage: 2.5 V, 3.0 V, or 3.3 V
Commercial, 0 °C to 70 °C
CY25403/CY25423/CY254 8-pin SOIC -Tape and Reel Supply Voltage: 2.5 V, 3.0 V, or 3.3 V
83SXC-xxxT
Commercial, 0 °C to 70 °C
CY25403/CY25423/CY254 8-pin SOIC
83SXI-xxx
Supply Voltage: 2.5 V, 3.0 V, or 3.3 V
Industrial, –40 °C to +85 °C
CY25403/CY25423/CY254 8-pin SOIC -Tape and Reel Supply Voltage: 2.5 V, 3.0 V, or 3.3 V
83SXI-xxxT
Industrial, –40 °C to +85 °C
Notes
5. xxx indicates factory programmed parts based on customer specific configuration. For more details, contact your local Cypress FAE or Sales Representative.
Document #: 001-12564 Rev. *F
Page 9 of 14
CY25403/CY25423/CY25483
Ordering Code Definitions
CY254x3
SX
C/I
- xxx T
Package Type: (T = Tape and Reel)
Customer specific identification code
Temperature code (C=Commercial or I=Industrial)
8-Pin SOIC package
Marketing Code: CY25403/23/83 = Device Number
Package Drawing and Dimensions
Figure 5. 8-Pin (150-Mil) SOIC S8
51-85066 *E
Document #: 001-12564 Rev. *F
Page 10 of 14
CY25403/CY25423/CY25483
Acronyms
Acronym
Description
DL
drive level
DNU
do not use
DUT
device under test
EIA
Electronic Industries Alliance
EMI
electromagnetic interference
ESD
electrostatic discharge
FAE
field application engineer
FS
frequency select
JEDEC
joint electron devices
engineering council
LVCMOS
low voltage complementary
metal oxide semiconductor
OE
output enable
OSC
oscillator
PD
power-down
PLL
phase-locked loop
PPM
parts per million
SS
spread spectrum
SSC
spread spectrum clock
SSON
spread spectrum on
Document #: 001-12564 Rev. *F
Page 11 of 14
CY25403/CY25423/CY25483
Document Conventions
Units of Measure
Symbol
Unit of Measure
C
degree Celsius
mA
milliamperes
MHz
megahertz
ms
milliseconds
ns
nanoseconds
pF
picofarad
ps
picoseconds
V
volts
µA
microamperes
Document #: 001-12564 Rev. *F
Page 12 of 14
CY25403/CY25423/CY25483
Document History Page
Document Title: CY25403/CY25423/CY25483 Three PLL Programmable Clock Generator with Spread Spectrum
Document Number: 001-12564
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
690296
See ECN
RGL
New Data Sheet
*A
815788
See ECN
RGL
Minor Change: To post on web
*B
1428744
See ECN
RGL/AESA Changed data sheet format to match generic part, CY2544/46
Added new device and specification for high ref. input voltage part,
CY7C1512KV18
Removed Preliminary from Title page
Replaced CLK2 with REFOUT
*C
2748211
08/10/09
TSAI
Posting to external web.
*D
2899300
03/25/10
CXQ
Updated Ordering Information. Added note regarding Possible Configurations
in Ordering Information section.
Added Possible Configurations table for “xxx’ parts.
Updated Package Drawing and Dimensions
*E
2898568
06/02/10
CXQ
Updated Ordering Information and template.
*F
3319132
07/18/11
BASH
Updated to latest template
Updated Package Drawing and Dimensions
Added Units of Measure
Added Contents
Document #: 001-12564 Rev. *F
Page 13 of 14
CY25403/CY25423/CY25483
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
Products
Automotive
PSoC Solutions
cypress.com/go/automotive
Clocks & Buffers
Interface
Lighting & Power Control
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psoc.cypress.com/solutions
cypress.com/go/interface
PSoC 1 | PSoC 3 | PSoC 5
cypress.com/go/powerpsoc
cypress.com/go/plc
Memory
Optical & Image Sensing
PSoC
Touch Sensing
USB Controllers
Wireless/RF
cypress.com/go/memory
cypress.com/go/image
cypress.com/go/psoc
cypress.com/go/touch
cypress.com/go/USB
cypress.com/go/wireless
© Cypress Semiconductor Corporation, 2007-2011. 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 product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress 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 products in life-support systems
application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),
United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress
integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not
assume any liability arising out of the application or use of any product or circuit described herein. Cypress 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’ product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document #: 001-12564 Rev. *F
Revised July 18, 2011
Page 14 of 14
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