DS2404B

更新时间： 2024-01-11 07:17:47

品牌	Logo	应用领域
达拉斯 - DALLAS		计时器或实时时钟微控制器和处理器外围集成电路光电二极管
页数	文件大小	规格书
28页	664K
描述
EconoRAM Time Chip

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DS2404B 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：	SOIC
包装说明：	0.300 INCH, SOIC-16	针数：	16
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
其他特性：	1 HZ FIXED O/P; 64-BIT LASERED ROM; TIMEKEEPING CURRENT = 350NA	最大时钟频率：	0.032 MHz
信息访问方法：	SERIAL, 3-WIRE	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e0	长度：	10.3 mm
湿度敏感等级：	1	端子数量：	16
计时器数量：		最高工作温度：	85 °C
最低工作温度：	-40 °C	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）：	240
认证状态：	Not Qualified	座面最大高度：	2.65 mm
最大供电电压：	5.5 V	最小供电电压：	4.5 V
标称供电电压：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn/Pb)	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：	7.5 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

DS2404

The “Power Control” section provides for two basic power configurations, battery operate mode and V_CC

operate mode. The battery operate mode utilizes one supply connected to V_BATO. The V_CCoperate mode

may utilize two supplies; the primary supply connects to V_CCand a backup supply connects to V_BATB

DS2404 BLOCK DIAGRAM Figure 1

COMMUNICATION PORTS

Two communication ports are provided, a 1-Wire and a 3-wire port. The advantages of using the 1-Wire

port are as follows: 1) provides access to the 64-bit lasered ROM, 2) consists of a single communication

signal (I/O), and 3) multiple devices may be connected to the 1-Wire bus. The 1-Wire bus has a

maximum data rate of 16.3k bits/second and requires one 5kW external pullup.

The 3-wire port consists of three signals, RST , CLK, and DQ. RST is an enable input, DQ is bidirectional

serial data, and the CLK input is used to clock in or out the serial data. The advantages of using the 3-

wire port are 1) high data transfer rate (2 MHz), 2) simple timing, and 3) no external pullup required.

Port selection is accomplished on a first-come, first-serve basis. Whichever port comes out of reset first

will obtain control. For the 3-wire port, this is done by bringing RST high. For the 1-Wire port, this is

done on the first falling edge of I/O after the reset and presence pulses. (See “1-Wire Signaling” section.)

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型号	品牌	描述	获取价格	数据表
DS2404B/T&R	DALLAS	Analog Waveform Generation Function, CMOS, PDSO16,	获取价格
DS2404B+T&R	MAXIM	Real Time Clock, 0 Timer(s), CMOS, PDSO16, 0.208 INCH, ROHS COMPLIANT, SSOP-16	获取价格
DS2404S	DALLAS	EconoRAM Time Chip	获取价格
DS2404S-001	DALLAS	Real Time Clock, 0 Timer(s), CMOS, PDSO16,	获取价格
DS2404S-001+	MAXIM	Real Time Clock, 0 Timer(s), CMOS, PDSO16, 0.300 INCH, ROHS COMPLIANT, SOIC-16	获取价格
DS2404S-001+T&R	MAXIM	Real Time Clock, 0 Timer(s), CMOS, PDSO16, 0.300 INCH, ROHS COMPLIANT, SOIC-16	获取价格