cy2267 Cypress Semiconductor Corporation., cy2267 Datasheet - Page 3

• Manufacturer Part Number: cy2267
• Description: Pentium Pentium Pro, Cyrix 6x86compatible Clock Synthesizer/driver
• Manufacturer: Cypress Semiconductor Corporation.

Function Table
Actual Clock Frequency Values
CPU and PCI Clock Driver Strengths
Operating Conditions
0
0
1
1
CPUCLK
CPUCLK
CPUCLK
USBCLK
IOCLK
Notes:
V
T
C
f
Note:
• Matched impedances on both rising and falling edges on
• Output impedance: 25
(REF)
2.
3.
A
DD
L
the output drivers
Parameter
Clock Output
Meets Intel USB clock requirements.
Electrical parameters are guaranteed with these operating conditions.
S2
[2]
0
1
0
1
Supply Voltage
Operating Temperature, Ambient
Max. Capacitive Load on
Reference Frequency, Oscillator Nominal Value
S1
50.0
66.67
60.0
48.0
24.0
Target Frequency
CPUCLK
PCICLK
USBCLK
IOCLK
REFCLK
(typical) measured at 1.5V.
[3]
(MHz)
14.318 MHz
14.318 MHz
14.318 MHz
14.318 MHz
XTALIN
Hi-Z
66.67 MHz
50.0 MHz
60.0 MHz
49.93
66.56
60.0
48.008
24.004
Actual Frequency
Description
CPUCLK[1-16]
(MHz)
3
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Supply Voltage ................................................. –0.5 to +7.0V
Input Voltage ..............................................–0.5V to V
Storage Temperature (Non-Condensing)... –65 C to +150 C
Max. Soldering Temperature (10 sec)...................... +260 C
Junction Temperature .............................................. +150 C
Package Power Dissipation.............................................. 1W
Static Discharge Voltage ........................................... >2000V
(per MIL-STD-883, Method 3015)
Hi-Z
33.33 MHz
25.0 MHz
30.0 MHz
–1399
–1597
0
167
167
PCICLK
PPM
Hi-Z
14.318 MHz
14.318 MHz
14.318 MHz
REFCLK
14.318
3.135
Min.
0
Hi-Z
48 MHz
48 MHz
48 MHz
USBCLK
14.318
Max.
3.6
70
30
30
20
20
45
Hi-Z
24 MHz
24 MHz
24 MHz
CY2267
IOCLK
MHz
DD
Unit
pF
V
C
+0.5