Cypress Semiconductor CY2291 Şartname Sayfası - Sayfa 4

Bilgisayar Donanımı Cypress Semiconductor CY2291 için çevrimiçi göz atın veya pdf Şartname Sayfası indirin. Cypress Semiconductor CY2291 12 sayfaları. Cypress three-pll general purpose eprom programmable clock generator specification sheet

Sayfayı Yazdır
Maximum Ratings
(Exceeding maximum ratings may shorten the useful life of the
device. User guidelines are not tested.)
Supply Voltage...............................................–0.5V to + 7.0V
DC Input Voltage ...........................................–0.5V to + 7.0V
Storage Temperature ................................. –65°C to +150°C
[5]
Operating Conditions
Parameter
V
Supply Voltage, 5.0V operation
DD
V
Supply Voltage, 3.3V operation
DD
V
Battery Backup Voltage
BATT
T
Commercial Operating Temperature, Ambient
A
Industrial Operating Temperature, Ambient
C
Max. Load Capacitance 5.0V Operation
LOAD
C
Max. Load Capacitance 3.3V Operation
LOAD
f
External Reference Crystal
REF
External Reference Clock
t
Power up time for all VDDs to reach minimum specified voltage (power
PU
ramps must be monotonic)
Electrical Characteristics, Commercial 5.0V
Parameter
Description
V
HIGH-Level Output Voltage I
OH
V
LOW-Level Output Voltage I
OL
V
32.768-kHz HIGH-Level
OH–32
Output Voltage
V
32.768-kHz LOW-Level
OL–32
Output Voltage
V
HIGH-Level Input Voltage
IH
V
LOW-Level Input Voltage
IL
I
Input HIGH Current
IH
I
Input LOW Current
IL
I
Output Leakage Current
OZ
I
V
Supply Current
DD
DD
[10]
Commercial
I
V
Power Supply Current
DDS
DD
in Shutdown Mode
I
V
Power Supply Current V
BATT
BATT
Notes
5. Electrical parameters are guaranteed by design with these operating conditions, unless otherwise noted.
6. External input reference clock must have a duty cycle between 40% and 60%, measured at V
7. Please refer to application note "Crystal Oscillator Topics" for information on AC-coupling the external input reference clock.
8. The oscillator circuit is optimized for a crystal reference and for external reference clocks up to 20 MHz. For external reference clocks above 20 MHz, it is recommended
that a 150Ω pull up resistor to V
DD
9. Xtal inputs have CMOS thresholds.
10. Load = Max., V
= 0V or V
, Typical (–104) configuration, CPUCLK = 66 MHz. Other configurations vary. Power can be approximated by the following formula
IN
DD
(multiply by 0.65 for 3V operation): I
Document #: 38-07189 Rev. *C
Description
[6, 7, 8]
Conditions
= 4.0 mA
OH
= 4.0 mA
OL
I
= 0.5 mA
OH
I
= 0.5 mA
OL
[9]
Except crystal pins
[9]
Except crystal pins
V
= V
– 0.5V
IN
DD
V
= +0.5V
IN
Three-state outputs
V
= V
Max., 5V operation
DD
DD
Shutdown active,
[10]
excluding V
BATT
= 3.0V
BATT
be connected to the Xout pin.
=10+0.06•(F
+F
+2•F
)+0.27•(F
DD
CPLL
UPLL
SPLL
Max. Soldering Temperature (10 sec) ......................... 260°C
Junction Temperature .................................................. 150°C
Package Power Dissipation...................................... 750 mW
Static Discharge Voltage.............................................
(per MIL-STD-883, Method 3015)
Part Numbers
Min.
All
4.5
All
3.0
All
2.0
CY2291/CY2291F
0
−40
CY2291I/CY2291FI
All
All
All
10.0
All
1
0.05
Min.
2.4
V
BATT
0.5
2.0
CY2291/CY2291F
/2.
DD
+F
+F
+F
+F
CLKA
CLKB
CLKC
CLKD
CPUCLK
CY2291
≥
2000V
Max.
Unit
5.5
V
3.6
V
5.5
V
+70
°C
+85
°C
25
pF
15
pF
25.0
MHz
30
MHz
50
ms
Typ.
Max.
Unit
V
0.4
V
V
0.4
V
V
0.8
V
μA
<1
10
μA
<1
10
μA
250
75
100
mA
μA
10
50
μA
5
15
+F
+F
).
CLKF
XBUF
Page 4 of 12
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