CY25403/CY25423/CY25483
Three-PLL Programmable Clock Generator
with Spread Spectrum
Three-PLL Programmable Clock Generator with Spread Spectrum
Features
■
Three fully integrated phase-locked loops (PLLs)
■
Input frequency range
❐ External crystal: 8 to 48 MHz
❐ External reference: 8 to 166 MHz clock
■
Reference clock input voltage range
❐ 2.5 V, 3.0 V, and 3.3 V for CY25483
❐ 1.8 V for CY25403 and CY25423
■
8-pin SOIC package
■
Commercial and Industrial temperature ranges
■
One-time programmability
For programming support, contact Cypress technical support
or send an e-mail to clocks@cypress.com
Benefits
■
Multiple high-performance PLLs allow synthesis of unrelated
frequencies
■
Nonvolatile programming for personalization of PLL
frequencies, spread spectrum characteristics, drive strength,
crystal load capacitance, and output frequencies
■
Wide operating output frequency range
❐ 3 to 166 MHz
■
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 and CY25483
❐ 1.8 V for CY25423
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
■
Three clock outputs with programmable drive strength
Functional Description
■
Glitch-free outputs while frequency switching
For a complete list of related documentation, click here.
Block Diagram
Crossbar
Switch
XIN/
EXCLKIN
XOUT
OSC
PLL1
and
and
FS1
Control
CLK1
(SS)
Dividers
MUX
FS0
Output
Drive
PLL 2
(SS)
CLK2
(No SS)
Strength
Logic
Control
PLL3
(SS)
CLK3
(SS)
SSON
PD#/OE
Cypress Semiconductor Corporation
Document Number: 001-12564 Rev. *K
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised October 31, 2017
CY25403/CY25423/CY25483
Contents
Device Selector Guide ...................................................... 3
Pin Configuration ............................................................. 3
Pin Definitions .................................................................. 3
Functional Overview ........................................................ 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
Recommended Operating Conditions ............................ 5
DC Electrical Specifications ............................................ 6
Thermal Resistance .......................................................... 6
AC Electrical Specifications ............................................ 7
Configuration Example .................................................... 8
Document Number: 001-12564 Rev. *K
Recommended Crystal Specification ............................. 8
Recommended Crystal Specification ............................. 8
Test and Measurement Setup .......................................... 9
Voltage and Timing Definitions ....................................... 9
Ordering Information ...................................................... 10
Possible Configurations ............................................. 10
Ordering Code Definitions ......................................... 11
Package Drawing and Dimensions ............................... 12
Acronyms ........................................................................ 13
Document Conventions ................................................. 13
Units of Measure ....................................................... 13
Document History Page ................................................. 14
Sales, Solutions, and Legal Information ...................... 16
Worldwide Sales and Design Support ....................... 16
Products .................................................................... 16
PSoC® Solutions ...................................................... 16
Cypress Developer Community ................................. 16
Technical Support ..................................................... 16
Page 2 of 16
CY25403/CY25423/CY25483
Device Selector Guide
Device
Crystal Input
EXCLKIN Input
VDD
CY25403
Yes
1.8 V LVCMOS
2.5 V, 3.0 V, 3.3 V
CY25483
No
2.5 V, 3.0 V, 3.3 V LVCMOS
2.5 V, 3.0 V, 3.3 V
CY25423
Yes
1.8 V LVCMOS
1.8 V
Pin Configuration
Figure 1. 8-pin SOIC pinout
CY25403/CY25423/CY25483
XIN/
EXCLKIN
1
VDD
2
CLK1
3
CLK2/FS0
4
CY25403/
CY25423/
CY25483
8
XOUT
7
GND
6
CLK3/SSON
5
PD#/OE/FS1
Pin Definitions
CY25403/CY25423/CY25483
Pin Number
Name
1
XIN/EXCLKIN
Input
2
VDD
Power
Power supply (Refer Device Selector Guide on page 3)
Output
Programmable clock output with spread spectrum
3
CLK1
4
CLK2/FS0
5
PD#/OE/FS1
6
CLK3/SSON
IO
Description
Crystal input or external clock input (Refer Device Selector Guide on page 3)
Output/Input Multifunction programmable pin: programmable clock output with no spread spectrum
or frequency select pin
Input
Multifunction programmable pin: power-down, output enable, or frequency select pin
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 Number: 001-12564 Rev. *K
Page 3 of 16
CY25403/CY25423/CY25483
Functional Overview
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 and CY25423 while just a clock signal for 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 for
CY25483 is 2.5 V/3.0 V/3.3 V while that for CY25403 and
CY25423 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/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 while
CY25423 is a low voltage part that can operate at 1.8 V.
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.
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
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 1 shows the typical rise
and fall times for different drive strength settings.
Table 1. 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, contact your 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.
Document Number: 001-12564 Rev. *K
Page 4 of 16
CY25403/CY25423/CY25483
Absolute Maximum Conditions
Parameter
Min
Max
Unit
Supply voltage for
CY25403/CY25483
–
–0.5
4.5
V
Supply voltage for CY25423
–
–0.5
2.6
VIN
Input voltage for
CY25403/CY25423/CY25483
Relative to VSS
–0.5
VDD + 0.5
TS
Temperature, Storage
Non Functional
–65
+150
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
VDD
Description
Condition
V
°C
Volts
–
10
–3
ppm
–
Recommended Operating Conditions
Parameter
VDD
Description
Min
Typ
Max
Unit
V
VDD operating voltage for CY25403/CY25483
2.25
–
3.60
VDD operating voltage for CY25423
1.65
1.8
1.95
TAC
Commercial ambient temperature
TAI
Industrial ambient temperature
CLOAD
Maximum load capacitance
tPU
Power-up time for all VDD to reach minimum specified voltage (power
ramps must be monotonic)
Document Number: 001-12564 Rev. *K
0
–
+70
°C
–40
--
+85
°C
–
–
15
pF
0.05
–
500
ms
Page 5 of 16
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 for
CY25403/CY25423
–
–
0.3
V
VIL3
Input low voltage of EXCLKIN for
CY25483
–
–
0.2 × VDD
V
VIH1
Input high voltage of PD#/OE,
FS0, FS1 and SSON
0.8 × VDD
–
–
V
VIH2
Input high voltage of EXCLKIN for
CY25403/CY25483
1.62
–
2.2
V
VIH3
Input high voltage of EXCLKIN for
CY25423
0.8 × VDD
–
–
V
IIL
Input low current, PD#/OE/FS1
–
–
10
µA
IIH
–
–
10
µA
IILDN
Input high current, PD#/OE/FS1 VIN = VDD
Input low current, SSON and FS0 VIN = 0 V
pins
(Internal pull-down resistor = 160k
typ.)
–
–
10
µA
IIHDN
Input high current, SSON and
FS0 pins
14
–
36
µA
RDN
Pull-down resistor of CLK1,
Output clocks in off state by setting
CLK2/FS0 and CLK3/SSON pins 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
VIN = 0 V
VIN = VDD
(Internal pull-down resistor = 160k
typ.)
Thermal Resistance
Parameter [3]
Description
θJA
Thermal resistance
(junction to ambient)
θJC
Thermal resistance
(junction to case)
Test Conditions
8-pin SOIC
Unit
Test conditions follow standard test methods and
procedures for measuring thermal impedance, in
accordance with EIA/JESD51.
131
°C/W
40
°C/W
Notes
1. Guaranteed by design but not 100% tested.
2. Configuration dependent.
3. These parameters are guaranteed by design and are not tested.
Document Number: 001-12564 Rev. *K
Page 6 of 16
CY25403/CY25423/CY25483
AC Electrical Specifications
Min
Typ
Max
Unit
FIN (crystal)
Parameter
Crystal frequency, XIN
Description
–
Conditions
8
–
48
MHz
FIN (clock)
Input clock frequency (EXCLKIN) –
8
–
166
MHz
FCLK
Output clock frequency
–
3
–
166
MHz
DC
Output duty cycle, all clocks
except ref out
Duty Cycle is defined in Figure 3 on
page 9; t1/t2, measured at 50% of
VDD
45
50
55
%
DC
Ref out duty cycle
Ref In Min 45%, Max 55%
40
–
60
%
TRF1[4]
Output rise/fall time
Measured from 20% to 80% of VDD,
as shown in Figure 4 on page 9,
CL = 15 pF, drive strength [00]
–
6.8
–
ns
TRF2[4]
Output rise/fall time
Measured from 20% to 80% of VDD,
as shown in Figure 4 on page 9,
CL = 15 pF, drive strength [01]
–
3.4
–
ns
TRF3[4]
Output rise/fall time
Measured from 20% to 80% of VDD,
as shown in Figure 4 on page 9,
CL = 15 pF, drive strength [10]
–
2.0
–
ns
TRF4[4]
Output rise/fall time
Measured from 20% to 80% of VDD,
as shown in Figure 4 on page 9,
CL = 15 pF, drive strength [11]
–
1.0
–
ns
TCCJ[4, 5]
Cycle-to-cycle jitter (peak)
Configuration dependent. See
Configuration Example on page 8
–
100
–
ps
TLOCK[4]
PLL lock time
Measured from 90% of the applied
power supply level
–
1
3
ms
Notes
4. Guaranteed by design but not 100% tested.
5. Configuration dependent.
Document Number: 001-12564 Rev. *K
Page 7 of 16
CY25403/CY25423/CY25483
Configuration Example
For C-C Jitter
Ref. Frequency
(MHz)
CLK1 Output
CLK2 Output
Freq. (MHz)
C-C Jitter Typ
(ps)
14.3181
8.0
19.2
74.25
27
48
CLK3 Output
Freq. (MHz)
C-C Jitter Typ
(ps)
Freq. (MHz)
C-C Jitter Typ
(ps)
134
166
103
48
92
99
166
94
8
91
48
67
27
109
166
103
48
93
27
123
166
137
Recommended Crystal Specification
For SMD Package
Parameter
Fmin
Description
Minimum frequency
Range 1
Range 2
Range 3
Unit
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
Range 1
Range 2
Range 3
Unit
8
14
24
MHz
Recommended Crystal Specification
For Thru-Hole Package
Parameter
Fmin
Description
Minimum frequency
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
18
12
12
pF
DL(max)
Maximum crystal drive level
1000
1000
1000
µW
Document Number: 001-12564 Rev. *K
Page 8 of 16
CY25403/CY25423/CY25483
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
Document Number: 001-12564 Rev. *K
20% of VDD
0V
Page 9 of 16
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
CY25423SXCT
Field Programmable 8-pin SOIC – Tape and Reel 1.8 V
Commercial, 0 °C to 70 °C
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
1.8 V
Industrial, –40 °C to +85 °C
CY25423SXIT
Field Programmable 8-pin SOIC – Tape and Reel 1.8 V
Industrial, –40 °C to +85 °C
CY25483SXI
Field Programmable 8-pin SOIC
CY25483SXIT
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 Commercial, 0 °C to 70 °C
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 or sales
representative for more information.
Possible Configurations
Part Number[6]
Type
VDD(V)
Production Flow
Pb-free
CY25403/CY25423/CY25483SXC- 8-pin SOIC
xxx
Supply Voltage: 2.5 V, 3.0 V, or 3.3 V Commercial, 0 °C to 70 °C
CY25403/CY25423/CY25483SXC- 8-pin SOIC – Tape and Reel Supply Voltage: 2.5 V, 3.0 V, or 3.3 V Commercial, 0 °C to 70 °C
xxxT
CY25403/CY25423/CY25483SXI-x 8-pin SOIC
xx
Supply Voltage: 2.5 V, 3.0 V, or 3.3 V Industrial, –40 °C to +85 °C
CY25403/CY25423/CY25483SXI-x 8-pin SOIC – Tape and Reel Supply Voltage: 2.5 V, 3.0 V, or 3.3 V Industrial, –40 °C to +85 °C
xxT
Note
6. xxx indicates factory programmed parts based on customer specific configuration. For more details, contact your local Cypress FAE or sales representative.
Document Number: 001-12564 Rev. *K
Page 10 of 16
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 (Pb-free)
Marketing Code: CY25403/23/83 = Device Number
Document Number: 001-12564 Rev. *K
Page 11 of 16
CY25403/CY25423/CY25483
Package Drawing and Dimensions
Figure 5. 8-pin SOIC (150 Mils) S0815/SZ815/SW815 Package Outline, 51-85066
51-85066 *I
Document Number: 001-12564 Rev. *K
Page 12 of 16
CY25403/CY25423/CY25483
Acronyms
Acronym
Document Conventions
Description
Units of Measure
DL
drive level
DNU
do not use
°C
degree Celsius
DUT
device under test
MHz
megahertz
EIA
Electronic Industries Alliance
µA
microampere
EMI
electromagnetic interference
mA
milliampere
ESD
electrostatic discharge
ms
millisecond
FAE
field application engineer
ns
nanosecond
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 Number: 001-12564 Rev. *K
Symbol
Unit of Measure
pF
picofarad
ps
picosecond
V
volt
Page 13 of 16
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.
Orig. of
Change
Submission
Date
**
690296
RGL
01/17/2007
Description of Change
New data sheet.
*A
815788
RGL
03/02/2007
Minor Change: To post on web.
*B
1428744
RGL /
AESA
08/30/2007
Updated Document Title to read as “CY25403/CY25423/CY25483 Three PLL
Programmable Clock Generator with Spread Spectrum”.
Changed status from Preliminary to Final.
Added CY25483 part related information in all instances across the document.
Updated Block Diagram.
Updated Pin Definitions:
Updated details in “Description” column.
Updated Functional Overview:
Updated description and added sub-sections.
Updated Absolute Maximum Conditions:
Updated details corresponding to VDD and VIN parameters.
Updated Recommended Operating Conditions:
Updated details corresponding to VDD parameter.
Updated DC Electrical Specifications:
Updated almost entire table.
Updated Ordering Information:
Updated part numbers.
*C
2748211
TSAI
08/10/2009
Post to external web.
*D
2899300
CXQ
03/25/2010
Updated Ordering Information:
Added Possible Configurations.
Added Note 6 and referred the same note in “Part Number” column.
Updated Package Drawing and Dimensions:
spec 51-85066 – Changed revision from *C to *D.
*E
2898568
CXQ
06/02/2010
Updated Ordering Information:
Updated part numbers.
Added Ordering Code Definitions.
Added Acronyms.
Updated to new template.
*F
3319132
BASH
07/18/2011
Updated Package Drawing and Dimensions:
spec 51-85066 – Changed revision from *D to *E.
Added Units of Measure.
Updated to new template.
Document Number: 001-12564 Rev. *K
Page 14 of 16
CY25403/CY25423/CY25483
Document History Page (continued)
Document Title: CY25403/CY25423/CY25483, Three-PLL Programmable Clock Generator with Spread Spectrum
Document Number: 001-12564
Rev.
ECN No.
Orig. of
Change
Submission
Date
Description of Change
*G
4468493
TAVA
08/12/2014
Updated Features:
Updated details under “Reference clock input voltage range”, “VDD supply
voltage options:”, and “Selectable output clock voltages independent of VDD
supply:”.
Updated Device Selector Guide:
Updated details in “Crystal Input”, “EXCLKIN Input” and “VDD” columns.
Updated Pin Definitions:
Updated details in “Description” column corresponding to pin numbers 1 and 2.
Updated Functional Overview:
Updated Input Reference Clocks:
Updated description.
Updated VDD Power Supply Options:
Updated description.
Updated Absolute Maximum Conditions:
Updated details corresponding to VDD parameter.
Updated Recommended Operating Conditions:
Updated details corresponding to VDD parameter.
Updated DC Electrical Specifications:
Updated details corresponding to VIH2 parameter.
Added VIH3 parameter and its details.
Updated Package Drawing and Dimensions:
spec 51-85066 – Changed revision from *E to *F.
Updated to new template.
Completing Sunset Review.
*H
4586478
TAVA
12/03/2014
Updated Functional Description:
Added “For a complete list of related documentation, click here.” at the end.
*I
5279365
PSR
05/20/2016
Added Thermal Resistance.
Updated Package Drawing and Dimensions:
spec 51-85066 – Changed revision from *F to *H.
Updated to new template.
Completing Sunset Review.
*J
5778174
PSR
06/19/2017
Updated Features:
Added one-time programmability.
*K
5952739
XHT
10/31/2017
Updated DC Electrical Specifications:
Updated details in “Description” and “Max” columns corresponding to VIL2
parameter.
Added VIL3 parameter and its details.
Updated Package Drawing and Dimensions:
spec 51-85066 – Changed revision from *H to *I.
Updated to new template.
Document Number: 001-12564 Rev. *K
Page 15 of 16
CY25403/CY25423/CY25483
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Document Number: 001-12564 Rev. *K
Revised October 31, 2017
Page 16 of 16