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W250HT PDF预览

W250HT

更新时间: 2024-11-14 19:51:55
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
11页 125K
描述
Processor Specific Clock Generator, 200MHz, CMOS, PDSO48, 0.300 INCH, SSOP-48

W250HT 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SSOP
包装说明:SSOP,针数:48
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.89
其他特性:ALSO REQUIRES 2.5V SUPPLYJESD-30 代码:R-PDSO-G48
JESD-609代码:e0长度:15.875 mm
湿度敏感等级:1端子数量:48
最高工作温度:70 °C最低工作温度:
最大输出时钟频率:200 MHz封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):220
主时钟/晶体标称频率:14.318 MHz认证状态:Not Qualified
座面最大高度:2.794 mm最大供电电压:3.465 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:CMOS
温度等级:COMMERCIAL端子面层:TIN LEAD
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.5 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, PROCESSOR SPECIFIC
Base Number Matches:1

W250HT 数据手册

 浏览型号W250HT的Datasheet PDF文件第2页浏览型号W250HT的Datasheet PDF文件第3页浏览型号W250HT的Datasheet PDF文件第4页浏览型号W250HT的Datasheet PDF文件第5页浏览型号W250HT的Datasheet PDF文件第6页浏览型号W250HT的Datasheet PDF文件第7页 
PRELIMINARY  
W250  
FTG for VIA Apollo Pro-266  
Table 1. Pin Selectable Frequency  
(continued)  
Features  
Input Address  
CPU,  
(MHz)  
78  
PCI  
(MHz)  
Spread  
Spectrum  
Maximized EMI Suppression using Cypress’s Spread  
Spectrum Technology  
FS4 FS3 FS2 FS1 FS0  
AGP  
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
78  
83  
39  
OFF  
OFF  
OFF  
+0.5%  
–0.5%  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
+0.5%  
–0.5%  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
+0.5%  
–0.5%  
System frequency synthesizer for VIA Apollo Pro-266  
Supports Intel® Pentium® II and Pentium® III class pro-  
cessor  
83  
41.5  
33.4  
33.4  
33.3  
34.3  
35.6  
36.6  
37.6  
38.3  
33.4  
33.4  
33.3  
39  
66.8  
66.8  
66.6  
103  
66.8  
66.8  
66.6  
68.6  
71.3  
73.3  
75.3  
76.6  
66.8  
66.8  
66.6  
78  
Four copies of CPU output  
Nine copies of PCI output  
One 48-MHz output for USB  
One 24-MHz or 48-MHz output for SIO  
Two buffered reference outputs  
Two APIC output  
107  
110  
113  
115  
100.2  
100.2  
100.0  
117  
Supports frequencies up to 200 MHz  
2
I C™ interface for programming  
Power management control inputs  
Available in 48-pin SSOP  
120  
80  
40  
124  
82.7  
65  
41.3  
32.5  
33.7  
34.5  
35.5  
36.0  
37.5  
38.7  
40  
Key Specifications  
130  
135  
67.5  
69  
CPU Cycle-to-Cycle Jitter:.......................................... 250 ps  
CPU to CPU Output Skew: ......................................... 175 ps  
PCI Cycle to Cycle Jitter:............................................ 500 ps  
PCI to PCI Output Skew: ............................................ 500 ps  
138  
141  
70.5  
72  
144  
150  
75  
155  
77.5  
80  
160  
Table 1. Pin Selectable Frequency  
166  
83  
41.5  
33.3  
33.4  
33.4  
33.3  
Input Address  
CPU,  
PCI  
Spread  
200  
66.6  
66.8  
66.8  
66.6  
FS4 FS3 FS2 FS1 FS0  
(MHz)  
AGP  
69  
(MHz)  
Spectrum  
133.6  
133.6  
133.3  
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
69  
72  
75  
34.5  
36  
OFF  
OFF  
OFF  
72  
75  
37.5  
Pin Configuration[1]  
Block Diagram  
VDD_REF  
REF0  
VDD_REF  
GND_REF  
X1  
48  
REF0  
1
REF1/FS4  
X1  
X2  
XTAL  
OSC  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
REF1/FS4*  
VDD_APIC  
APIC0  
2
3
VDD_APIC  
PLL Ref Freq  
X2  
4
APIC0:1  
VDD_AGP  
VDD_48 MHz  
FS3*/48 MHz  
FS2*/24_48 MHz  
GND_48 MHz  
PCI_F  
5
APIC1  
GND_APIC  
CPU_F  
VDD_CPU  
GND_CPU  
CPU1  
DIV  
6
7
8
9
AGP0:2  
DIV  
CPU_STOP#  
VDD_CPU  
CPU_F  
PCI1  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
PWR_DWN#  
FS0:1  
PCI2  
CPU2  
GND_PCI  
PCI3  
VDD_CPU  
GND_CPU  
CPU3  
Stop  
Clock  
CPU1:3  
PLL 1  
Control  
PCI4  
VDD_PCI  
PCI5  
PCI6  
PCI7  
GND_PCI  
PCI8  
*FS1  
*FS0  
AGP0  
VDD_AGP  
VDD_PCI  
PCI_F  
CPU_STOP#*  
PCI_STOP#*  
PWR_DWN#*  
VDD_CORE  
GND_CORE  
SDATA  
SCLK  
AGP2  
AGP1  
GND_AGP  
÷2,3,4  
PCI1:8  
Stop  
Clock  
PCI_STOP#  
Control  
2
SDATA  
SCLK  
I C  
Logic  
VDD_48 MHz  
48MHz/FS3  
Note:  
1. Signals marked with ‘*’ have internal pull-up resistors.  
PLL2  
÷2  
24_48MHz/FS2  
Intel and Pentium are registered trademarks of Intel Corporation. I2C is a trademark of Philips Corporation.  
Cypress Semiconductor Corporation  
3901 North First Street  
San Jose  
CA 95134  
408-943-2600  
August 4, 2000, rev. **  

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