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參數(shù)資料
| 型號(hào)： | CY2071AI |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Single-PLL General-Purpose EPROM Programmable Clock Generator |
| 中文描述： | 單鎖相環(huán)通用EPROM的可編程時(shí)鐘發(fā)生器 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 223K |
| 代理商： | CY2071AI |
CY2071A
Document #: 38-07139 Rev. *D
Page 3 of 9
Notes:
5. Electrical parameters are guaranteed with these operating conditions. Values for 3.3V operation are shown in parentheses.
6. External input reference clock must have a duty cycle between 40% and 60%, measured at V
/2.
7. Please refer to application note “Crystal Oscillator Topics” for information on AC-coupling the external input reference clock.
8. See “CY2071A and CY2907 Clock Generators” Application Note for important customer clarification.
9. Xtal inputs have CMOS thresholds.
10.Load = max, typical configuration, f
= 14.318 MHz. Specific configurations may vary. A close approximation of I
can be derived by the following formula:
I
DD
(mA) = V
DD
*(6.25+(0.055*F
REF
) + (0.0017*C
LOAD
*(F
CLKA
+F
CLKB
+F
CLKC
))). C
LOAD
is specified in pF and F is specified in MHz.
Operating Conditions
[5]
Parameter
V
DD
V
DD
T
A
Description
Min.
4.5
3.0
0
–40
–
–
10.0
1.0
0.05
Max.
5.5
3.6
70
85
25
15
25.0
30.0
50
Unit
V
V
°C
°C
pF
pF
MHz
MHz
ms
Supply Voltage, 5.0V Operation
Supply Voltage, 3.3V Operation
Commercial Operating Temperature, Ambient
Industrial Operating Temperature, Ambient
Max. Load Capacitance per Output (5V Operation)
Max. Load Capacitance per Output (3.3V Operation)
External Reference Crystal
External Reference Clock
[6, 7]
Power-up time for all VDDs to reach minimum specified voltage (power ramps
must be monotonic)
C
L
f
REF
t
PU
Electrical Characteristics,
Commercial 5.0V:
V
DD
= 5V ±10%, T
A
= 0°C to +70°C
[8]
Parameter
Description
V
OH
HIGH-Level Output Voltage
I
OH
= –4.0 mA
V
OL
LOW-Level Output Voltage
I
OL
= 4.0 mA
V
IH
Except Crystal Pins
V
IL
Except Crystal Pins
I
IH
Input HIGH Current
V
IN
= V
DD
– 0.5V
I
IL
Input LOW Current
V
IN
= 0.5V
I
OZ
Output Leakage Current
Three State Outputs
I
DD
V
DD
= V
DD
max. 5V operation, C
L
= 25 pF
Conditions
Min.
2.4
–
2.0
–
–
–
–
Typ.
–
–
–
–
–
–
–
40
Max.
–
0.4
–
0.8
10
150
250
60
Unit
V
V
V
V
μ
A
μ
A
μ
A
mA
HIGH-Level Input Voltage
[9]
LOW-Level Output Voltage
[9]
V
DD
Supply Current
[10]
Electrical Characteristics,
Commercial 3.3V:
V
DD
= 3.3V ±10%, T
A
= 0
°
C to 70
°
C
[8]
Parameter
Description
V
OH
HIGH-Level Output Voltage
I
OH
= –4.0 mA
V
OL
LOW-Level Output Voltage
I
OL
= 4.0 mA
V
IH
Except Crystal Pins
V
IL
Except Crystal Pins
I
IH
Input HIGH Current
V
IN
= V
DD
– 0.5V
I
IL
Input LOW Current
V
IN
= 0.5V
I
OZ
Output Leakage Current
Three State Outputs
I
DD
V
DD
= V
DD
max. 3.3V operation, C
L
= 15 pF
Conditions
Min.
2.4
–
2.0
–
–
–
–
–
Typ.
–
–
–
–
–
–
–
24
Max.
–
0.4
–
0.8
10
150
250
40
Unit
V
V
V
V
μ
A
μ
A
μ
A
mA
HIGH-Level Input Voltage
[9]
LOW-Level Output Voltage
[9]
V
DD
Supply Current
[10]
[+] Feedback
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