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參數資料
| 型號： | W48S87 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Spread Spectrum 3 DIMM Desktop Clock |
| 中文描述： | 擴頻3個DIMM桌面時鐘 |
| 文件頁數： | 13/19頁 |
| 文件大小： | 248K |
| 代理商： | W48S87 |
W48S87-72
13
Crystal Oscillator
V
TH
C
LOAD
X1 Input Threshold Voltage
[6]
V
DD
= 3.3V
1.65
V
Load Capacitance, Imposed on
External Crystal
[7]
X1 Input Capacitance
[8]
14
pF
C
IN,X1
Pin Capacitance/Inductance
C
IN
Input Pin Capacitance
C
OUT
Output Pin Capacitance
L
IN
Input Pin Inductance
Serial Input Port
V
IL
Input Low Voltage
V
IH
Input High Voltage
I
IL
Input Low Current
Pin X2 unconnected
28
pF
Except X1 and X2
5
pF
6
pF
7
nH
V
DD
= 3.3V
V
DD
= 3.3V
No internal pull-up/down
on SCLOCK
0.4
0.3V
DD
V
0.7V
DD
2.4
V
10
10
μA
I
IH
Input High Current
No internal pull-up/down
on SCLOCK
10
10
μA
I
OL
Sink Current into SDATA or SCLOCK,
Open Drain N-Channel Device On
I
OL
= 0.3V
DD
5
10
15
mA
C
IN
Input Capacitance of SDATA and
SCLOCK
5
10
pF
C
SDATA
C
SCLOCK
Notes:
6.
X1 input threshold voltage (typical) is V
/2.
7.
The W48S87-72 contains an internal crystal load capacitor between pin X1 and ground and another between pin X2 and ground. Total load placed on crystal
is 14 pF; this includes typical stray capacitance of short PCB traces to crystal.
8.
X1 input capacitance is applicable when driving X1 with an external clock source (X2 is left unconnected).
Total Capacitance of SDATA Bus
400
pF
Total Capacitance of SCLOCK Bus
400
pF
DC Electrical Characteristics:
(continued)
T
A
= 0
°
C to +70
°
C, V
DDQ3
= 3.3V±5% (3.135
–
3.465V) f
XTL
= 14.31818 MHz, V
DDQ2
= 2.5±5%
Parameter
Description
Test Condition
Min.
Typ.
Max.
Unit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W48S87-04 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Spread Spectrum 3 DIMM Desktop Clock |
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| W48S87-72H | 制造商:Cypress Semiconductor 功能描述:Logic and Timing, Clock Generation, Desktop/Notebook Frequency Generator |
| W48S87-72XT | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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