參數(shù)資料
型號(hào)： DS2404
英文描述： EconoRAM Time Chip
中文描述： 經(jīng)濟(jì)型RAM時(shí)鐘芯片
文件頁(yè)數(shù)： 3/28頁(yè)
文件大?。?/td> 663K
代理商： DS2404
DS2404
3 of 28
020998
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
CC
operate mode
may utilize two supplies; the primary supply connects to V
CC
and 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 5k
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.)
相關(guān)PDF資料
PDF描述
DS2404-001 EconoRAM Time Chip
DS2404B EconoRAM Time Chip
DS2404S EconoRAM Time Chip
DS2405 Addressable Switch
DS2405P Addressable Switch
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2404-001 制造商:Maxim Integrated Products 功能描述:ECONORAM/TIME, DIP16 (GENERIC) - Rail/Tube
DS2404-001+ 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 512BYTE 16PDIP - Rail/Tube
DS2404B 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS2404B/T&R 制造商:Maxim Integrated Products 功能描述:ECONORAM/TIME, SSOP16-TRL (GENERIC) - Tape and Reel
DS2404B+ 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 512BYTE 16SSOP - Rail/Tube
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