Datasheet> 器件分类 > 嵌入式处理器和控制器> 微控制器和处理器> ASM3P2508AF-08ST

文档预览

ASM3P2508AF-08ST: 产品描述Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8; 产品类别嵌入式处理器和控制器微控制器和处理器; 文件大小369KB，共9页; 制造商PulseCore Semiconductor Corporation; 标准

下载文档详细参数选型对比全文预览

ASM3P2508AF-08ST概述

Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8

ASM3P2508AF-08ST规格参数

参数名称	属性值
是否Rohs认证	符合
包装说明	0.150 INCH, ROHS COMPLIANT, SOIC-8
Reach Compliance Code	unknown
Is Samacsys	N
JESD-30 代码	R-PDSO-G8
长度	4.9 mm
端子数量	8
最高工作温度	70 °C
最低工作温度
最大输出时钟频率	120 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
峰值回流温度（摄氏度）	NOT SPECIFIED
主时钟/晶体标称频率	14.31818 MHz
认证状态	Not Qualified
座面最大高度	1.75 mm
最大供电电压	3.6 V
最小供电电压	3 V
标称供电电压	3.3 V
表面贴装	YES
技术	CMOS
温度等级	COMMERCIAL
端子形式	GULL WING
端子节距	1.27 mm
端子位置	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED
宽度	3.91 mm
uPs/uCs/外围集成电路类型	CLOCK GENERATOR, OTHER
Base Number Matches	1

文档预览

下载PDF文档

全文
预览

ASM3P2508A

Peak EMI Reducing Solution

Features

Generates an EMI optimized clocking signal at

output.

Input frequency – 14.31818MHz.

Frequency outputs:

120MHz (modulated) - default.

72MHz (modulated) or 48MHz (modulated)

selectable via I2C

±1% Centre spread.

Modulation rate: 40KHz.

Byte Write via I2C

Supply voltage range 3.3V ± 0.3V.

Available in 8-pin SOIC Package.

Available in Commercial and Industrial

Temperature ranges.

The ASM3P2508A has a feature to power down the

72MHz / 48MHz output by writing data into specific

registers in the device via I2C. By writing a ‗0‘ into bit 1 of

Byte 0, the PLL block generating 72MHz / 48MHz can be

powered down. Writing ‗0‘ into bit ‗7‘ of Byte 1 selects an

output of 72MHz on FOUT2CLK while a ‗1‘ at the same

location selects a 48MHz clock output. However, the I2C

block, crystal oscillator, and the PLL block generating

120MHz would be always running.

shielding that are required to pass EMI regulations. The

ASM3P2508A modulates the output of PLL in order to

spread the bandwidth of a synthesized clock, thereby

decreasing the peak amplitudes of its harmonics. This

results in significantly lower system EMI compared to the

typical narrow band signal produced by oscillators and

most clock generators. Lowering EMI by increasing a

signal‘s bandwidth is called spread spectrum clock

generation.

Product Description

The ASM3P2508A is a versatile spread spectrum

frequency modulator. The ASM3P2508A reduces

electromagnetic interference (EMI) at the clock source.

The ASM3P2508A allows significant system cost savings

by reducing the number of circuit board layers and

Block Diagram

XIN

XOUT

Crystal

Oscillator

PLL 1

FOUT1CLK

(120MHz)

SCL

SDA

I2C

Interface

PLL 2

FOUT2CLK

(72 MHz / 48MHz)

JANUARY 2010 – Rev. 2

Publication Order Number:

ASM3P2508/D

ASM3P2508AF-08ST相似产品对比

	ASM3P2508AF-08ST	ASM3P2508AG-08ST	ASM3I2508AF-08ST	PTN2208H2183DGT0	ASM3I2508AG-08SR	ASM3I2508AF-08SR	ASM3P2508AG-08SR
描述	Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8	Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, GREEN, SOIC-8	Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8	RESISTOR, THIN FILM, 0.75 W, 0.5 %, 50 ppm, 218000 ohm, SURFACE MOUNT, 2208, CHIP, ROHS COMPLIANT	Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, GREEN, SOIC-8	Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8	Clock Generator, 120MHz, CMOS, PDSO8, 0.150 INCH, GREEN, SOIC-8
包装说明	0.150 INCH, ROHS COMPLIANT, SOIC-8	0.150 INCH, GREEN, SOIC-8	0.150 INCH, ROHS COMPLIANT, SOIC-8	SMT, 2208	0.150 INCH, GREEN, SOIC-8	0.150 INCH, ROHS COMPLIANT, SOIC-8	0.150 INCH, GREEN, SOIC-8
Reach Compliance Code	unknown	unknown	unknown	compliant	unknown	unknown	unknown
端子数量	8	8	8	2	8	8	8
最高工作温度	70 °C	70 °C	85 °C	155 °C	85 °C	85 °C	70 °C
最低工作温度	-	-	-40 °C	-55 °C	-40 °C	-40 °C	-
封装形式	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMT	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
表面贴装	YES	YES	YES	YES	YES	YES	YES
技术	CMOS	CMOS	CMOS	THIN FILM	CMOS	CMOS	CMOS
是否Rohs认证	符合	-	符合	符合	-	符合	-
Is Samacsys	N	N	N	-	N	-	-
JESD-30 代码	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	-	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
长度	4.9 mm	4.9 mm	4.9 mm	-	4.9 mm	4.9 mm	4.9 mm
最大输出时钟频率	120 MHz	120 MHz	120 MHz	-	120 MHz	120 MHz	120 MHz
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	SOP	SOP	SOP	-	SOP	SOP	SOP
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR
主时钟/晶体标称频率	14.31818 MHz	14.31818 MHz	14.31818 MHz	-	14.31818 MHz	14.31818 MHz	14.31818 MHz
认证状态	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified
座面最大高度	1.75 mm	1.75 mm	1.75 mm	-	1.75 mm	1.75 mm	1.75 mm
最大供电电压	3.6 V	3.6 V	3.6 V	-	3.6 V	3.6 V	3.6 V
最小供电电压	3 V	3 V	3 V	-	3 V	3 V	3 V
标称供电电压	3.3 V	3.3 V	3.3 V	-	3.3 V	3.3 V	3.3 V
温度等级	COMMERCIAL	COMMERCIAL	INDUSTRIAL	-	INDUSTRIAL	INDUSTRIAL	COMMERCIAL
端子形式	GULL WING	GULL WING	GULL WING	-	GULL WING	GULL WING	GULL WING
端子节距	1.27 mm	1.27 mm	1.27 mm	-	1.27 mm	1.27 mm	1.27 mm
端子位置	DUAL	DUAL	DUAL	-	DUAL	DUAL	DUAL
宽度	3.91 mm	3.91 mm	3.91 mm	-	3.91 mm	3.91 mm	3.91 mm
uPs/uCs/外围集成电路类型	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	-	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1	1	-	1	1	1

推荐资源

人行道闸的发展趋势: 人行道闸，在我国发展一直都比较落后，很多地方现在都不知道这个是什么东西来的。不过比较确实这个是可有可无的东西，只是一种意思--防范意识。不过现在越来越多的人爱上了这个行业，觉得这个还 ......; suifengli33 工业自动化与控制

关于rf能不能在protues里跟MCU一起仿真: 最近在做AVR和cc2520的无线传感器模块设计不知道能不能在Proteus里进行仿真我在protues里发现有天线的原件不知道能不能行...; sharpwinner 无线连接

智能电表设计中的热分配表的重要性: 热分配表（HCA）是智能电子设备，其在使用集中、辐射供暖系统的多层住宅建筑物中通过独立装置测量热能。这种测量用于分配操作中央加热系统的总成本。 HCA可能是市场上最“简单”（在功能方面 ......; maylove 模拟与混合信号

集成外设及DSPBIOS应用实例（下）: 38164...; xiaoxin1 DSP 与 ARM 处理器

TLP3547 PK HF32FA 测试数据对比短波应用: 这个测试是短波滤波器的测试，成品测试，已装机测试整体指标都正常，东芝的光继电器，犹豫指标差些，没有上功率测试，待验证整体排版布局。下面是3组数据供大家参考一下吧 ....... 1，为阻抗对 ......; btty038 东芝光电继电器TLP3547评测

WinCE 屏幕横竖转换问题 API: 目的旋转界面为竖屏。 API原定义： LONG ChangeDisplaySettingsEx( LPCTSTR lpszDeviceName, LPDEVMODE lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam ); 导入定义为 ......; windboy121 嵌入式系统

器件捷径: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

热门器件

开源项目推荐更多

热门活动更多

热门文章更多

技术资料推荐更多