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CY2267PVC-1T

更新时间： 2024-11-17 19:48:15
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟光电二极管外围集成电路晶体
页数 文件大小 规格书
9页 103K
描述
Processor Specific Clock Generator, 66.56MHz, MOS, PDSO34, SSOP-34

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CY2267PVC-1T 技术参数

生命周期：Obsolete零件包装代码：SSOP
包装说明：SOP,针数：34
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.81
JESD-30 代码：R-PDSO-G34长度：17.9324 mm
端子数量：34最高工作温度：70 °C
最低工作温度：最大输出时钟频率：66.56 MHz
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
主时钟/晶体标称频率：14.318 MHz认证状态：Not Qualified
座面最大高度：2.6416 mm最大压摆率：180 mA
最大供电电压：3.6 V最小供电电压：3.135 V
标称供电电压：3.3 V表面贴装：YES
技术：MOS温度等级：COMMERCIAL
端子形式：GULL WING端子节距：1.016 mm
端子位置：DUAL宽度：7.5057 mm
uPs/uCs/外围集成电路类型：CLOCK GENERATOR, PROCESSOR SPECIFICBase Number Matches：1

CY2267PVC-1T 数据手册

 浏览型号CY2267PVC-1T的Datasheet PDF文件第2页浏览型号CY2267PVC-1T的Datasheet PDF文件第3页浏览型号CY2267PVC-1T的Datasheet PDF文件第4页浏览型号CY2267PVC-1T的Datasheet PDF文件第5页浏览型号CY2267PVC-1T的Datasheet PDF文件第6页浏览型号CY2267PVC-1T的Datasheet PDF文件第7页 
CY2267  
Pentium , Pentium Pro, and Cyrix 6x86  
Compatible Clock Synthesizer/Driver  
Functional Description  
Features  
• Complete clock solution to meet requirements of Pen-  
tium®, Pentium® Pro, or Cyrix® 6x86 motherboards in-  
cluding dual-processor and SDRAM designs  
The CY2267 is a low-cost Clock Synthesizer/Driver chip for a  
Pentium, Pentium Pro, or Cyrix 6x86-based motherboard.  
The CY2267 outputs sixteen CPU clocks, twelve of which can  
be used to support up to three SDRAM modules. The PCI  
clock output can be buffered with an external, low-cost Zero  
Delay Buffer (CY2305/9), thus providing a complete solution  
for 82430TX desktop systems.  
— Sixteen CPU clock outputs, up to 66.66 MHz (see  
Function Table)  
— One synchronous PCI clock output  
— One USB clock at 48 MHz, meets Intel’s accuracy,  
jitter, as well as rise and fall time requirements  
The CPU clocks of the CY2267 have less than 200 ps cy-  
cle-to-cycle jitter. Both the CPU and PCI clocks have a slew  
rate of greater than 1V/ns. The USB clock meets Intel’s accu-  
racy, jitter, and rise and fall time requirements.  
— One I/O clock at 24 MHz  
— One Ref. clock at 14.318 MHz  
• Two dedicated, independent Frequency Select inputs  
(internalpull-up)easesystemdesign,enable in-system  
frequency changes, and support OE control  
All CPU clocks support fast clock stabilization on power-up  
(< 2 ms). Additionally, two dedicated Frequency Select inputs  
are used for Output Enable control and setting the CPU clock  
output frequencies.  
• Low CPU clock jitter 200 ps cycle-to-cycle  
≤
• Low skew outputs  
The CY2267 clock outputs are designed for low EMI emis-  
sions. Controlled rise and fall times, unique output driver cir-  
cuits, and innovative circuit layout techniques enable the  
CY2267 to have lower EMI than clock devices from other man-  
ufacturers. Please refer to the application note “Layout and  
Termination Techniques for Cypress Clock Generators” for  
more information on recommended system layout techniques.  
—
250 ps between CPU clocks  
≤
— 1ns 3ns skew between CPU and PCI clocks for com-  
−
patibility with SiS 55XX as well as Intel 82430TX,  
82430HX, and 82430VX chipsets (CY2267–1)  
• Improved output drivers are designed for low EMI  
• Meets Pentium and Pentium Pro power-up stabilization  
requirements  
• 3.3V operation, 5V tolerant inputs  
• Available in space-saving 34-pin SSOP package  
The CY2267 accepts a 14.318 MHz reference crystal or clock  
as its input and runs off a 3.3V supply. The CY2267 is available  
in a space-saving, low-cost 34-pin SSOP package and is  
pin-compatible with the CY2264 and CY2265.  
Pin Configuration  
Logic Block Diagram  
Top View  
REFCLK (14.318MHz)  
SSOP  
V
DD  
S2  
1
2
3
4
34  
33  
32  
31  
XTALIN  
14.318  
MHz  
OSC.  
CPU  
PLL  
CPUCLK [1–16]  
XTALIN  
REFCLK  
XTALOUT  
XTALOUT  
V
DD  
/2  
V
SS  
IOCLK  
ROM  
CPUCLK16  
CPUCLK1  
USBCLK  
5
30  
29  
28  
27  
26  
25  
24  
23  
Delay  
(–1only)  
V
SS  
6
PCICLK  
7
CPUCLK2  
S1  
S2  
/2  
CPUCLK13  
8
V
DD  
IOCLK (24MHz)  
V
DD  
CPUCLK3  
CPUCLK4  
9
CPUCLK12  
CPUCLK11  
10  
11  
12  
SYS  
PLL  
V
SS  
/2  
USBCLK (48MHz)  
CPUCLK5  
CPUCLK6  
V
SS  
CPUCLK10  
CPUCLK9  
13  
14  
22  
21  
20  
19  
18  
V
DD  
V
SS  
S1  
15  
16  
17  
PCICLK  
CPUCLK14  
CPUCLK8  
CPUCLK15  
CPUCLK7  
2267–a  
2267–b  
Intel and Pentium are registered trademarks of Intel Corporation.  
Cyrix is a registered trademark of Cyrix Corporation.  
Cypress Semiconductor Corporation  
•
3901 North First Street  
•
San Jose  
•
CA 95134  
•
408-943-2600  
September 1996 - Revised June 12, 1997  
1234567...9

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