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| 型号： | DS2890P-000+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/27页 |
| 文件大小： | 0K |
| 描述： | IC POT DIGITAL 1-WIRE 100K 6TSOC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 120 |
| 接片： | 256 |
| 电阻（欧姆）： | 100k |
| 电路数： | 1 |
| 温度系数： | 标准值 800 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | 1 线 串行 |
| 电源电压： | 2.8 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-LSOJ |
| 供应商设备封装： | 6-TSOC |
| 包装： | 管件 |
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DS2890
17 of 27
MASTER MODE
DATA (LSB FIRST)
COMMENTS
TX
C3h
Issue Wiper Increment Command
RX
<data byte>
Read new wiper position
TX
C3h
Issue Wiper Increment Command
RX
<data byte>
Read new wiper position
TX
99h
Issue Wiper Decrement Command
RX
<data byte>
Read new wiper position
TX
Reset
Reset Pulse
1-WIRE SIGNALING
The DS2890 requires strict protocols to ensure data integrity. The protocol consists of four types of
signaling on one line: Reset Sequence with Reset Pulse and Presence Pulse, Write 0, Write 1 and Read
Data. Except for the presence pulse the bus master initiates all these signals. The DS2890 can
communicate at two different speeds, regular speed and Overdrive Speed. If not explicitly set into the
Overdrive mode, the DS2890 will communicate at regular speed. While in Overdrive Mode the fast
timing applies to all waveforms.
The initialization sequence required to begin any communication with the DS2890 is shown in
Figure 16. A Reset Pulse followed by a Presence Pulse indicates the DS2890 is ready to send or receive
data. The bus master transmits (TX) a reset pulse (tRSTL, minimum 480 s at regular speed, 48 s at
Overdrive Speed). The bus master then releases the line and goes into receive mode (RX). The 1-Wire
bus is pulled to a high state via the pull-up resistor. After detecting the rising edge on the data contact, the
DS2890 waits (tPDH, 15-60 s at regular speed, 2-6 s at Overdrive speed) and then transmits the
Presence Pulse (tPDL, 60-240 s at regular speed, 8-24 s at Overdrive Speed). A Reset Pulse of 480 s or
longer will exit the Overdrive Mode returning the device to regular speed. If the DS2890 is in Overdrive
Mode and the Reset Pulse is no longer than 80 s the device will remain in Overdrive Mode.
READ/WRITE TIME SLOTS
The definitions of write and read time slots are illustrated in Figure 17 (a-c). The master initiates all time
slots by driving the data line low. The falling edge of the data line synchronizes the DS2890 to the master
by triggering an internal timing circuit. During write time slots, the timing circuit determines when the
DS2890 will sample the data line. For a read data time slot, if a “0” is to be transmitted, the timing circuit
determines how long the DS2890 will hold the data line low. If the data bit is a “1”, the DS2890 will not
hold the data line low at all.
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相关代理商/技术参数 |
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| DS2890P-000+ | 功能描述:IC POT DIGITAL 1-WIRE 100K 6TSOC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| DS2890P-000+T&R | 制造商:Maxim Integrated Products 功能描述:IC POT DIGITAL 1-WIRE 100K 6TSOC |
| DS2890P-000+T&R | 功能描述:IC POT DIGITAL 1-WIRE 100K 6TSOC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| DS2890T | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1-Wire Digital Potentiometer |
| DS2890T-000 | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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