Cypress CY3670 Single-pll general-purpose eprom programmable clock generator Datasheet

CY2071A
Single-PLL General-Purpose
EPROM Programmable Clock Generator
Features
Benefits
Single phase-locked loop architecture
Generates a custom frequency from an external source
EPROM programmability
Easy customization and fast turnaround
Factory-programmable (CY2071A, CY2071AI) or field- Programming support available for all opportunities
programmable (CY2071AF, CY2071AFI) device options
Up to three configurable outputs
Generates three related frequencies from a single device
Low-skew, low-jitter, high-accuracy outputs
Meets critical industry standard timing requirements
Internal loop filter
Alleviates the need for external components
Power management (OE)
Supports low-power applications
Frequency select options
3 outputs with 2 user selectable frequencies
Configurable 5V or 3.3V operation
Supports industry standard design platforms
8-pin 150-mil SOIC package
Industry-standard packaging saves on board space
i
Selector Guide
Part Number
Outputs
Input Frequency Range
Output Frequency Range
Specifics
CY2071A
3
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
500 kHz–130 MHz (5V)
500 kHz–100 MHz (3.3V)
Factory Programmable
Commercial Temperature
CY2071AI
3
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
500 kHz–100 MHz (5V)
500 kHz–80 MHz (3.3V)
Factory Programmable
Industrial Temperature
CY2071AF
3
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
500 kHz–100 MHz (5V)
500 kHz–80 MHz (3.3V)
Field Programmable
Commercial Temperature
CY2071AFI
3
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
500 kHz–90 MHz (5V)
500 kHz–66.6 MHz (3.3V)
Field Programmable
Industrial Temperature
Logic Block Diagram for CY2071A
XTALIN
REFERENCE
OSCILLATOR
CLKA
EPROMConfigurable
Multiplexer
and Divide
Logic
XTALOUT
PLL
Block
CLKB
CLKC
OE / FS
Pin Configuration
8-pin SOIC
Top View
1
2
3
4
CLKA
GND
XTALIN
XTALOUT
Cypress Semiconductor Corporation
Document #: 38-07139 Rev. *A
•
8
7
6
5
OE/FS
VDD
CLKC
CLKB
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised December 14, 2002
CY2071A
Pin Summary
Name
Number
Description
CLKA
1
Configurable Clock Output
GND
2
Ground
XTALIN[1]
3
Reference Crystal Input or External Reference Clock Input
XTALOUT[1, 2]
4
Reference Crystal Feedback
CLKB
5
Configurable Clock Output
CLKC
6
Configurable Clock Output
VDD
7
Voltage Supply
OE / FS
8
Output Control Pin, either Output Enable or Frequency Select Input
(Active-HIGH, internal pull-up resistor to VDD)
Notes:
1. For best accuracy, use a parallel-resonant crystal, CL = 17 pF.
2. Float XTALOUT pin if XTALIN is driven by reference clock (as opposed to an external crystal).
Functional Description
The CY2071A is a general-purpose clock synthesizer designed for use in applications such as modems, disk drives,
CD-ROM drives, video CD players, games, set-top boxes, and
data/telecommunications. The device offers up to three configurable clock outputs in an 8-pin, 150-mil SOIC package and
can operate off either a 3.3V or 5V power supply. The on-chip
reference oscillator is designed for 10-MHz to 25-MHz crystals. Alternatively, an external reference clock of frequency between 1 MHz and 30 MHz can be used.
The CY2071A has one PLL and outputs three factory-EPROM
configurable clocks: CLKA, CLKB, and CLKC. The output
clocks can originate either from the PLL or the reference, or
selected dividers thereof. Additionally, pin 8 can be configured
to be an Output Enable or a Select input.
The CY2071A can replace multiple Metal Can Oscillators
(MCO) in a synchronous system, providing cost and board
space savings to the manufacturer. Hence, these devices are
ideally suited for applications that require multiple, accurate,
and stable clocks synthesized from low-cost generators in
small packages. A hard-disk drive is an example of such an
application. In this case, CLKA drives the PLL in the Read
Controller, while CLKB and CLKC drive the MCU and associated sequencers.
sheet when specifying them in CyClocks to ensure that you
stay within the limits. You can download a copy of CyClocks
free on the Cypress Semiconductor website at www.cypress.com.
Consider using the CY2081 for applications that require unrelated output frequencies. Consider using the CY2291,
CY2292, or CY2907 for applications that require more than
three output clocks.
Cypress FTG Programmer
The Cypress Frequency Timing Generator (FTG) Programmer
is a portable programmer designed to custom program our
family of EPROM Field Programmable Clock Devices. The
FTG programmers connect to a PC serial port and allow users
of CyClocks software to quickly and easily program any of the
CY2291F, CY2292F, CY2071AF, and CY2907F devices. The
ordering code for the Cypress FTG Programmer is CY3670.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Supply Voltage ...............................................–0.5V to +7.0V
DC Input Voltage ..................................... –0.5V to VDD+0.5V
CyClocks™ Software
Storage Temperature ................................. –65°C to +150°C
CyClocks is an easy-to-use software application that allows
you to configure any one of the EPROM-Programmable
Clocks offered by Cypress. You may specify the input frequency, PLL and output frequencies, and different functional options. Please note the output frequency ranges in this data
Junction Temperature...................................................150°C
Document #: 38-07139 Rev. *A
Max. Soldering Temperature (10 sec) ..........................260°C
Static Discharge Voltage............................................ >2000V
(per MIL-STD-883, Method 3015)
Page 2 of 8
CY2071A
Operating Conditions[3]
Parameter
Description
Min.
Max.
Unit
VDD
Supply Voltage, 5.0V Operation
4.5
5.5
V
VDD
Supply Voltage, 3.3V Operation
3.0
3.6
V
TA
Commercial Operating Temperature, Ambient
0
70
°C
–40
85
°C
Max. Load Capacitance per Output (5V Operation)
25
pF
Max. Load Capacitance per Output (3.3V Operation)
15
pF
Industrial Operating Temperature, Ambient
CL
fREF
tPU
External Reference Crystal
10.0
25.0
MHz
External Reference Clock[4, 5]
1.0
30.0
MHz
Power-up time for all VDD's to reach minimum specified voltage (power
ramps must be monotonic)
0.05
50
ms
Electrical Characteristics, Commercial 5.0V VDD = 5V ±10%, TA = 0°C to +70°C
Parameter
Description
Conditions
VOH
HIGH-Level Output Voltage
IOH = –4.0 mA
VOL
LOW-Level Output Voltage
IOL = 4.0 mA
VIH
HIGH-Level Input
Voltage[6]
Voltage[6]
VIL
LOW-Level Output
IIH
Input HIGH Current
IIL
Input LOW Current
IOZ
Output Leakage Current
IDD
VDD Supply
Current[7]
Min.
Typ.
Max.
2.4
V
0.4
Except Crystal Pins
Unit
2.0
V
V
Except Crystal Pins
0.8
V
VIN = VDD – 0.5V
10
µA
VIN = 0.5V
150
µA
Three State Outputs
250
µA
40
60
mA
Typ.
Max.
Unit
VDD = VDD max. 5V operation, CL = 25 pF
Electrical Characteristics, Commercial 3.3V VDD = 3.3V ±10%, TA = 0°C to +70°C
Parameter
Description
Conditions
VOH
HIGH-Level Output Voltage
IOH = –4.0 mA
VOL
LOW-Level Output Voltage
IOL = 4.0 mA
VIH
HIGH-Level Input Voltage[6]
Except Crystal Pins
VIL
LOW-Level Output
IIH
Voltage[6]
Min.
2.4
V
0.4
2.0
V
V
Except Crystal Pins
0.8
V
Input HIGH Current
VIN = VDD – 0.5V
10
µA
IIL
Input LOW Current
VIN = 0.5V
150
µA
IOZ
Output Leakage Current
Three State Outputs
250
µA
40
mA
IDD
VDD Supply
Current[7]
VDD = VDD max. 3.3V operation, CL = 15 pF
24
Notes:
3. Electrical parameters are guaranteed with these operating conditions. Values for 3.3V operation are shown in parentheses.
4. External input reference clock must have a duty cycle between 40% and 60%, measured at VDD/2.
5. Please refer to application note “Crystal Oscillator Topics” for information on AC-coupling the external input reference clock.
6. Xtal inputs have CMOS thresholds.
7. Load = max, typical configuration, fREF = 14.318 MHz. Specific configurations may vary. A close approximation of IDD can be derived by the following formula:
IDD(mA) = VDD*(6.25+(0.055*FREF) + (0.0017*CLOAD*(FCLKA+FCLKB+FCLKC))). CLOAD is specified in pF and F is specified in MHz.
Document #: 38-07139 Rev. *A
Page 3 of 8
CY2071A
Electrical Characteristics, Industrial 5.0V VDD =5.0V ±10%, TA = –40°C to +85°C
Parameter
Description
Conditions
VOH
HIGH-Level Output Voltage
IOH = –4.0 mA
VOL
LOW-Level Output Voltage
IOL = 4.0 mA
[6]
Min.
Typ.
Max.
2.4
V
0.4
Except Crystal Pins
Unit
2.0
V
VIH
HIGH-Level Input Voltage
VIL
LOW-Level Output Voltage[6]
Except Crystal Pins
0.8
V
V
IIH
Input HIGH Current
VIN = VDD – 0.5V
10
µA
IIL
Input LOW Current
VIN = 0.5V
150
µA
IOZ
Output Leakage Current
Three State Outputs
IDD
VDD Supply Current[7]
VDD = VDD max. 5V operation, CL = 25 pF
250
µA
40
75
mA
Typ.
Max.
Unit
Electrical Characteristics, Industrial 3.3V VDD =3.3V ±10%, TA = –40°C to +85°C
Parameter
Description
Conditions
VOH
HIGH-Level Output Voltage
IOH = –4.0 mA
VOL
LOW-Level Output Voltage
IOL = 4.0 mA
VIH
HIGH-Level Input
Voltage[6]
Voltage[6]
VIL
LOW-Level Output
IIH
Input HIGH Current
IIL
Input LOW Current
IOZ
Output Leakage Current
IDD
VDD Supply
Current[7]
Min.
2.4
V
0.4
Except Crystal Pins
2.0
V
V
Except Crystal Pins
0.8
V
VIN = VDD – 0.5V
10
µA
VIN = 0.5V
150
µA
Three State Outputs
250
µA
50
mA
VDD = VDD max. 3.3V operation, CL = 15 pF
24
Switching Characteristics, Commercial 5.0V[8]
Parameter
t1
Name
Output Period
Description
Clock output range
5V operation
25-pF load
Max.
Unit
CY2071A
7.692
[130 MHz]
Min.
Typ.
2000
[500 kHz]
ns
CY2071AF
10
[100 MHz]
2000
[500 kHz]
ns
t1A
Clock Jitter
Peak-to-peak period jitter (t1 max. – t1 min.),
% of clock period, fOUT ≤ 16 MHz
0.8
1
%
t1B
Clock Jitter
Peak-to-peak period jitter
(16 MHz ≤ fOUT ≤ 50 MHz)
350
500
ps
t1C
Clock Jitter[9]
Peak-to-peak period jitter (fOUT > 50 MHz)
250
350
ps
45%
50%
55%
40%
50%
60%
Output clock rise time
1.5
2.5
ns
Output clock fall time
1.5
2.5
ns
0.5
ns
Output Duty Cycle
cycle[10, 11]
Duty
fOUT ≤ 60 MHz
for outputs, (t2 ÷ t1)
Output Duty Cycle[9] Duty cycle[11] for outputs, (t2 ÷ t1),
fOUT > 60 MHz
t3
Rise Time[9]
Time[9]
t4
Fall
t5
Skew
Skew delay between any two outputs with
identical frequencies (generated by the PLL)
Notes:
8. Guaranteed by design, not 100% tested.
9. When the output clock frequency is between 100 MHz and 130 MHz at 5V, the maximum capacitive load for these measurements is 15 pF.
10. Reference Output duty cycle depends on XTALIN duty cycle.
11. Measured at 1.4V.
Document #: 38-07139 Rev. *A
Page 4 of 8
CY2071A
Switching Characteristics, Commercial 3.3V[8]
Parameter
t1
Name
Output Period
Description
Clock output range
3.3V operation
15-pF load
Min.
Typ.
Max.
Unit
CY2071AS
10
[100 MHz]
2000
[500 kHz]
ns
CY2071AF
12.50
[80 MHz]
2000
[500 kHz]
ns
t1A
Clock Jitter
Peak-to-peak period jitter (t1 max. – t1 min.),
% of clock period, fOUT ≤ 16 MHz
0.8
1
%
t1B
Clock Jitter
Peak-to-peak period jitter
(16 MHz ≤ fOUT ≤ 50 MHz)
350
500
ps
t1C
Clock Jitter[9]
Peak-to-peak period jitter (fOUT > 50 MHz)
250
350
ps
45%
50%
55%
40%
50%
60%
Output clock rise time
1.5
2.5
ns
Output clock fall time
1.5
2.5
ns
0.5
ns
Output Duty Cycle
[10, 11]
Duty cycle
fOUT ≤ 60 MHz
for outputs, (t2 ÷ t1)
Output Duty Cycle[9] Duty cycle[11] for outputs, (t2 ÷ t1),
fOUT > 60 MHz
t3
Rise Time[9]
t4
Fall Time
t5
Skew
[9]
Skew delay between any two outputs with
identical frequencies (generated by the PLL)
Switching Characteristics, Industrial 5.0V[8]
Parameter
t1
Name
Output Period
Description
Clock output range
5.0V operation
25-pF load
Max.
Unit
CY2071AI
Min.
10
[100 MHz]
Typ.
2000
[500 kHz]
ns
CY2071AFI
11.1
[90 MHz]
2000
[500 kHz]
ns
t1A
Clock Jitter
Peak-to-peak period jitter (t1 max. – t1 min.),
% of clock period, fOUT ≤ 16 MHz
0.8
1
%
t1B
Clock Jitter
Peak-to-peak period jitter
(16 MHz ≤ fOUT ≤ 50 MHz)
350
500
ps
t1C
Clock Jitter[9]
Peak-to-peak period jitter (fOUT > 50 MHz)
250
350
ps
Output Duty Cycle
Duty cycle[10, 11] for outputs, (t2 ÷ t1)
fOUT ≤ 60 MHz
45%
50%
55%
40%
50%
60%
Output clock rise time
1.5
2.5
ns
Output clock fall time
1.5
2.5
ns
0.5
ns
Output Duty Cycle[9] Duty cycle[11] for outputs, (t2 ÷ t1),
fOUT > 60 MHz
t3
Rise time[9]
time[9]
t4
Fall
t5
Skew
Document #: 38-07139 Rev. *A
Skew delay between any two outputs with
identical frequencies (generated by the PLL)
Page 5 of 8
CY2071A
Switching Characteristics, Industrial 3.3V[8]
Parameter
t1
Name
Description
Output Period
Clock output range
3.3V operation
15-pF load
Min.
CY2071AI
CY2071AFI
Typ.
Max.
Unit
12.50
[80 MHz]
2000
[500 kHz]
ns
15.0
[66.6 MHz]
2000
[500 kHz]
ns
t1A
Clock Jitter
Peak-to-peak period jitter (t1 max. – t1 min.),
% of clock period, fOUT ≤ 16 MHz
0.8
1
%
t1B
Clock Jitter
Peak-to-peak period jitter
(16 MHz ≤ fOUT ≤ 50 MHz)
350
500
ps
t1C
Clock Jitter[9]
Peak-to-peak period jitter (fOUT > 50 MHz)
250
350
ps
Output Duty Cycle
Duty cycle[10, 11] for outputs, (t2 ÷ t1)
fOUT ≤ 60 MHz
45%
50%
55%
40%
50%
60%
Output Duty Cycle[9] Duty cycle[11] for outputs, (t2 ÷ t1),
fOUT > 60 MHz
t3
Rise time[9]
Output clock rise time
1.5
2.5
ns
t4
Fall time[9]
Output clock fall time
1.5
2.5
ns
t5
Skew
Skew delay between any two outputs with
identical frequencies (generated by the PLL)
0.5
ns
Switching Waveforms
All Outputs Duty Cycle and Rise/Fall Time
t1
t2
OUTPUT
2.4V
0.4V
t3
VDD
2.4V
0.4V
0V
t4
2071A–3
Output-Output Clock Skew
OUTPUT
OUTPUT
t5
Document #: 38-07139 Rev. *A
2071A–4
Page 6 of 8
CY2071A
Test Circuit
VDD
7
0.1 µF
OUTPUTS
CLK output
CLOAD
2
GND
2071A–5
Ordering Information
Ordering Code
Package Name
Package Type
Operating Range
CY2071ASC-XXX
S8
8-Pin (150-Mil) SOIC
5.0V, Commercial, Factory Programmable
CY2071ASL-XXX
S8
8-Pin (150-Mil) SOIC
3.3V, Commercial, Factory Programmable
CY2071ASI-XXX
S8
8-Pin (150-Mil) SOIC
5V/3.3V, Industrial, Factory Programmable
CY2071AF
S8
8-Pin (150-Mil) SOIC
5V/3.3V, Commercial, Field Programmable
CY2071AFI
S8
8-Pin (150-Mil) SOIC
5V/3.3V, Industrial, Field Programmable
FTG Programmer
Custom programming for Field Programmable Clocks
CY3670
Package Characteristics
Package
θJA (C/W)
θJC (C/W)
Transistor Count
170
35
5436
8 Pin SOIC
Package Diagram
8-Lead (150-Mil) SOIC S8
51-85066-A
Document #: 38-07139 Rev. *A
Page 7 of 8
© Cypress Semiconductor Corporation, 2001. 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.
CY2071A
Document Title: CY2071A Single-PLL General-Purpose EPROM Programmable Clock Generator
Document Number: 38-07139
REV.
ECN NO.
Issue
Date
Orig. of
Change
**
110248
12/17/01
SZV
*A
121827
12/14/02
RBI
Document #: 38-07139 Rev. *A
Description of Change
Change from Spec number: 38-00521 to 38-07139
Power up requirements added to Operating Conditions Information
Page 8 of 8
Similar pages