5秒后页面跳转
W254BX PDF预览

W254BX

更新时间: 2024-11-14 21:21:31
品牌 Logo 应用领域
芯科 - SILICON 时钟光电二极管外围集成电路晶体
页数 文件大小 规格书
16页 207K
描述
Processor Specific Clock Generator, 133MHz, CMOS, PDSO48, 6.10 MM, TSSOP-48

W254BX 技术参数

生命周期:Obsolete零件包装代码:TSSOP
包装说明:TSSOP,针数:48
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.5
JESD-30 代码:R-PDSO-G48JESD-609代码:e4
长度:12.5 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:133 MHz
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260主时钟/晶体标称频率:14.318 MHz
认证状态:Not Qualified座面最大高度:1.2 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:NICKEL PALLADIUM GOLD端子形式:GULL WING
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:6.1 mm
uPs/uCs/外围集成电路类型:CLOCK GENERATOR, PROCESSOR SPECIFICBase Number Matches:1

W254BX 数据手册

 浏览型号W254BX的Datasheet PDF文件第2页浏览型号W254BX的Datasheet PDF文件第3页浏览型号W254BX的Datasheet PDF文件第4页浏览型号W254BX的Datasheet PDF文件第5页浏览型号W254BX的Datasheet PDF文件第6页浏览型号W254BX的Datasheet PDF文件第7页 
1W254B  
W254B  
133MHz Spread Spectrum FTG for Mobile Pentium® III Platforms  
Features  
Key Specifications  
• Maximized EMI suppression using Cypress’s Spread  
Spectrum technology (–0.5% and ±0.5%)  
• Single chip system FTG for Mobile Intel® Platforms  
CPU, SDRAM Outputs Cycle-to-Cycle Jitter: ..............250 ps  
APIC, 48 MHz, 3V66, PCI Outputs  
Cycle-to-Cycle Jitter: ...................................................500 ps  
• Two CPU outputs  
CPU Output Skew: ......................................................150 ps  
3V66 Output Skew: .....................................................175 ps  
APIC, SDRAM Output Skew: ......................................250 ps  
PCI Output Skew:........................................................500 ps  
VDDQ3 (REF, PCI, 3V66, 48 MHz, SDRAM):......... 3.3V±5%  
VDDQ2 (CPU, APIC):........2.5V±5%in Selectable Frequency  
Table 1. Pin Selectable Frequency  
• Seven copies of PCI clock (one Free Running)  
• Seven SDRAM clock (one DCLK for Memory Hub)  
• Two copies of 48 MHz clock (non-spread spectrum)  
optimized for USB reference input and video DOT clock  
• Three 3V66 Hublink/AGP outputs  
• One VCH clock (48 MHz non-SSC or 66.67 MHz SSC)  
• One APIC outputs  
Input  
Address  
Output Frequencies  
• One buffered reference output  
FS1 FS0 CPU SDRAM 48MHz PCI APIC REF 3V66  
• Supports frequencies up to 133 MHz  
• SMBus interface for programming  
• Power management control inputs  
0
0
1
1
0
1
0
1
66  
100  
100  
133  
100  
48  
MHz  
33  
MHz  
14.318 66  
MHz MHz  
100  
133  
133  
Block Diagram  
Pin Configuration  
REF  
APIC  
VDD_APIC  
VDD_CPU  
CPU  
CPU_F  
GND_CPU  
GND_SDRAM  
SDRAM0  
SDRAM1  
VDD_SDRAM  
SDRAM2  
SDRAM3  
GND_SDRAM  
SDRAM4  
SDRAM5  
DCLK  
VDD_SDRAM  
CPU_STP#  
PCI_STP#  
VDD_REF  
VDD_REF  
X1  
1
2
3
4
5
6
7
8
48  
PLL Ref Freq  
X1  
X2  
XTAL  
OSC  
REF  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
X2  
GND_REF  
GND_PCI  
PCI_F/FS0^  
PCI1/FS1^  
PCI2  
Divider  
Network  
PLL 1  
VDD_CPU  
CPU  
Stop  
Clock  
Control  
CPU_F  
CPU_STP#  
VDD_APIC  
APIC  
VDD_PCI  
PCI3  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
PCI4  
PCI5  
PCI6  
VDD_SDRAM  
DCLK  
SDRAM0:5  
VDD_3V66  
3V66_0  
3V66_1  
3V66_AGP  
GND_3V66  
VCH_CLK  
GND_48  
USB  
VDD_PCI  
PCI_F/FS0  
PWR_DWN#  
PCI_STP#  
Stop  
Clock  
Control  
PCI1/FS1  
PCI2:6  
PWR_DWN#  
SCLK  
SDATA  
DOT  
VDD_48  
GND_CORE  
VDD_3V66  
3V66_0:1  
VDD_CORE  
3V66_AGP  
Note:  
VDD_48  
1. Internal pull-down or pull-up resistors present on inputs  
marked with * or ^ respectively. Design should not rely solely  
on internal pull-up or pull-down resistor to set I/O pins HIGH  
or LOW respectively.  
PLL2  
USB (48MHz)  
DOT (48MHz)  
SDATA  
SCLK  
SMBus  
Logic  
VCH_CLK  
Rev 1.0, November 20, 2006  
2200 Laurelwood Road, Santa Clara, CA 95054  
Page 1 of 16  
Tel:(408) 855-0555 Fax:(408) 855-0550  
www.SpectraLinear.com  

与W254BX相关器件

型号 品牌 获取价格 描述 数据表
W255 SPECTRALINEAR

获取价格

200 MHz 24-Output Buffer for 4 DDR or 3 SDRAM DIMMS
W255 CYPRESS

获取价格

200-MHz 24-Output Buffer for 4 DDR or 3 SDRAM DIMMS
W255H SPECTRALINEAR

获取价格

200 MHz 24-Output Buffer for 4 DDR or 3 SDRAM DIMMS
W255H CYPRESS

获取价格

200-MPz 24-Output Buffer for 4DDR or 3 SDRAM DIMMS
W255HT SPECTRALINEAR

获取价格

200 MHz 24-Output Buffer for 4 DDR or 3 SDRAM DIMMS
W255HT CYPRESS

获取价格

200-MPz 24-Output Buffer for 4DDR or 3 SDRAM DIMMS
W256 SPECTRALINEAR

获取价格

12 Output Buffer for 2 DDR and 3 SRAM DIMMS
W256 CYPRESS

获取价格

12 Output Buffer for 2 DDR and 3 SRAM DIMMS
W256H CYPRESS

获取价格

12 Output Buffer for 2 DDR and 3 SRAM DIMMS
W256H SPECTRALINEAR

获取价格

12 Output Buffer for 2 DDR and 3 SRAM DIMMS