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| 型号： | DS2890P-000+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/27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
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SEARCH ROM [F0H]
When a multi-drop system is initially brought up, the bus master might not know the number of devices
on the 1-Wire bus or their 64-bit ROM codes. The search ROM command allows the bus master to use a
process of elimination to identify the 64-bit ROM codes of all slave devices on the bus. The search ROM
process is the repetition of a simple 3-step routine: read a bit, read the complement of the bit, then write
the desired value of that bit. The bus master performs this 3-step routine on each bit of the ROM. After
one complete pass, the bus master knows the 64-bit ROM code of one device. Additional passes will
identify the ROM codes of the remaining devices.
CONDITIONAL SEARCH ROM [ECH]
The Conditional Search ROM command operates similarly to the Search ROM command except that only
devices fulfilling the specified search condition will participate in the search. The device condition that
will cause individual DS2890s to participate in a Conditional Search is a wiper position located at the
power-on default setting (00h).
This feature enables the bus master to easily determine whether a
potentiometer has gone through a power-on reset and needs to be re-configured with a required wiper
position setting.
SKIP ROM [CCH]
This command can save time in a single drop bus system by allowing the bus master to access
potentiometer functions without providing the 64-bit ROM code. If more than one slave is present on the
bus and, for example, a read command is issued following the Skip ROM command, data collision will
occur on the bus as multiple slaves transmit simultaneously (open drain pull-downs will produce a wired-
AND result).
OVERDRIVE SKIP ROM [3CH]
On a single-drop bus this command can save time by allowing the bus master to access the memory
functions without providing the 64-bit ROM code.
Unlike the normal Skip ROM command the
Overdrive Skip ROM sets the DS2890 in the Overdrive Mode.
All communication following this
command code has to occur at Overdrive Speed until a reset pulse of minimum 480 s duration resets all
devices on the bus to regular speed.
When issued on a multi-drop bus this command will set all Overdrive-supporting devices into Overdrive
mode. To subsequently address a specific Overdrive-supporting device, a reset pulse at Overdrive speed
has to be issued followed by a Match ROM or Search ROM command sequence. This will speed up the
search process. If more than one Overdrive-supporting slave is present on the bus and the Overdrive Skip
ROM command is followed by a read command, data collision will occur on the bus as multiple slaves
transmit simultaneously (open drain pull-downs will produce a wire-AND result).
OVERDRIVE MATCH ROM [69H]
The Overdrive Match ROM command, followed by a 64-bit ROM sequence transmitted at Overdrive
Speed, allows the bus master to address a specific DS2890 on a multi-drop bus and to simultaneously set
it in Overdrive Mode. Only the DS2890 that exactly matches the 64-bit ROM sequence will respond to
the subsequent potentiometer function command. Slaves already in Overdrive mode from a previous
Overdrive Skip or a successful Overdrive Match command will remain in Overdrive mode. All Over-
drive-capable slaves will return to regular speed at the next Reset Pulse of minimum 480 s duration. The
Overdrive Match ROM command can be used with a single or multiple devices on the bus.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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