W133 Cypress Semiconductor Corp., W133 Datasheet - Page 8

• Manufacturer Part Number: W133
• Description: Spread Spectrum System Frequency Synthesizer
• Manufacturer: Cypress Semiconductor Corp.

DC Electrical Characteristics:
3.3V AC Electrical Characteristics
T
Spread Spectrum function turned off
AC clock parameters are tested and guaranteed over stated operating conditions using the stated lump capacitive load at the
clock output.
3V66 Clock Outputs, 3V66_0:3 (Lump Capacitance Test Load = 30 pF)
Notes:
31. X1 input threshold voltage (typical) is V
32. The W133 contains an internal crystal load capacitor between pin X1 and ground and another between pin X2 and ground. Total load placed on crystal is 18 pF;
33. X1 input capacitance is applicable when driving X1 with an external clock source (X2 is left unconnected).
34. Period, jitter, offset, and skew measured on rising edge at 1.5V.
35. 3V66 is CPU/2 for CPU =133 MHz and (2 x CPU)/3 for CPU = 100 MHz.
Crystal Oscillator
V
C
C
Pin Capacitance/Inductance
C
C
L
f
t
t
t
f
Z
Parameter
A
R
F
D
ST
Parameter
IN
o
TH
LOAD
IN,X1
IN
OUT
= 0°C to +70°C, V
this includes typical stray capacitance of short PCB traces to crystal.
[34]
Frequency
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization
from Power-up (cold start)
AC Output Impedance
X1 Input threshold Voltage
Load Capacitance, Imposed on
External Crystal
X1 Input Capacitance
Input Pin Capacitance
Output Pin Capacitance
Input Pin Inductance
DDQ3
Description
= 3.3V±5%,V
Description
[32]
DD
/2.
[33]
T
PRELIMINARY
DDQ2
A
[31]
= 0°C to +70°C, V
Note 35
Measured from 0.4V to 2.4V
Measured from 2.4V to 0.4V
Measured on rising and falling edge at 1.5V
Assumes full supply voltage reached within
1 ms from power-up. Short cycles exist prior
to frequency stabilization.
Average value during switching transition.
Used for determining series termination
value.
= 2.5V± 5%, f
Test Condition/Comments
Pin X2 unconnected
Except X1 and X2
XTL
DDQ3
Test Condition
8
= 14.31818 MHz
= 3.3V±5%, V
DDQ2
= 2.5V±5% (continued)
Min.
Min.
45
1
1
Typ.
1.65
18
28
Typ.
66.6
15
Max.
Max.
5
6
7
55
4
4
3
W133
MHz
Unit
Unit
V/ns
V/ns
ms
pF
pF
pF
pF
nH
%
V