Datasheet
数据手册 > 主动器件 > Maxim Integrated > DS1996L-F5+ 数据手册PDF > DS1996L-F5+ 产品设计参考 第 1/15 页
DS1996L-F5+
¥ 115.65
百芯的价格

DS1996L-F5+ 产品设计参考 - Maxim Integrated

  • 制造商:
    Maxim Integrated
  • 分类:
    主动器件
  • 封装
    CAN
  • 描述:
    Memory Circuit, 8KX8, MEDB2, ROHS COMPLIANT, MICROCAN-2
更新时间: 2024-06-13 17:45:06 (UTC+8)

DS1996L-F5+ 产品设计参考

页码:/15页
下载 PDF
重新加载
下载
Maxim > Design Support > Technical Documents > Reference Schematics > 1-Wire
®
Devices > APP 244
Maxim > Design Support > Technical Documents > Reference Schematics > iButton
®
> APP 244
Maxim > Design Support > Technical Documents > Reference Schematics > Microcontrollers > APP 244
Keywords: 1-Wire master, microcontroller, network driver
REFERENCE SCHEMATIC 244
Advanced 1-Wire Network Driver
By: Bernhard Linke, Principal Member Technical Staff
May 30, 2003
Abstract: This document describes a microcontroller-based 1-Wire
®
master interface for reliable
operation of small, medium, and large 1-Wire networks. This is accomplished using careful impedance
matching, intelligent (software-controlled) active pullup, and slew-rate control. Software flow charts are
included to assist the user in generating the correct 1-Wire timing for reset pulse, presence detect, write
one, write zero, and read time slots using any suitable microcontroller. Scope traces illustrate the timing
performance of the driver as well as transmission line effects as they appear with long cables.
Introduction
To a large degree, the reliability of a 1-Wire network depends on the characteristics of the driver circuit
that the host computer uses to communicate with 1-Wire slave devices. This document describes a 1-
Wire master interface that uses careful impedance matching and an "intelligent" (software-controlled)
strong pullup to accomplish reliable operation in networks from very lightweight to very heavy, up to
500m equivalent size. For guidelines on how to create reliable 1-Wire networks see tutorial 148,
"Guidelines for Reliable Long Line 1-Wire Networks".
Circuit Description
The network driver (Figure 1) consists of a pulldown section (Q1, R1, C1, R5) and a pullup section (Q2,
R2, C2, R6). A third transistor and surrounding components (Q3, C4, R7) form a strong pullup section to
supply extra power for devices such as EEPROMs, or temperature sensors. This "strong-pullup" function
is not discussed in this document. Of the three transistors, a maximum of one is conducting at any time.
When there is no 1-Wire communication ("idle" state), all three transistors are nonconducting.
Page 1 of 15

DS1996L-F5+ 数据手册 PDF

DS1996L-F5+ 数据手册
Maxim Integrated
19 页, 467 KB
DS1996L-F5+ 产品设计参考
Maxim Integrated
15 页, 217 KB
DS1996L-F5+ 其它数据手册
Maxim Integrated
19 页, 440 KB
DS1996L-F5+ 应用笔记
Maxim Integrated
25 页, 249 KB

DS1996 数据手册 PDF

DS1996
数据手册
Maxim Integrated
iButton 64KB Memory
DS1996
数据手册
Dallas Semiconductor
64Kbit Memory iButton
DS1996L-F5+
数据手册
Maxim Integrated
Memory Circuit, 8KX8, MEDB2, ROHS COMPLIANT, MICROCAN-2
DS1996L-F5
数据手册
Maxim Integrated
64Kbit Memory iButton
DS1996L+F5
数据手册
DS
IBUTTON MEMORY 64Kbit F5
DS1996L-F5
数据手册
Dallas Semiconductor
64Kbit Memory iButton
DS1996L-004-000+F5
数据手册
Maxim Integrated
64KB Memory iButton 2Pin F5 MicroCan
DS1996L-F5+
数据手册
Dallas Semiconductor
Memory Circuit, 64KX1, CMOS, MADB2, MICRO CAN
Datasheet 搜索
搜索
百芯智造数据库涵盖1亿多个数据手册,每天更新超过5,000个PDF文件。
在线联系我们
黄经理 - 百芯智造销售经理在线,5 分钟前
您的邮箱 *
消息 *
发送