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參數(shù)資料
| 型號(hào)： | DS1856E-025R |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection |
| 中文描述： | 雙路，溫度與內(nèi)部校準(zhǔn)監(jiān)視器和控制電阻器，密碼保護(hù) |
| 文件頁數(shù)： | 22/31頁 |
| 文件大?。?/td> | 484K |
| 代理商： | DS1856E-025R |
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D
Dual, Temperature-Controlled Resistors with Inter-
nally Calibrated Monitors and Password Protection
22
____________________________________________________________________
Table Select
Reserved
.................... <R-NA><W-all><00h>
PWE
........................... <R-NA><W-all><FFFFFFFFh> Password Entry. There are two
passwords for the DS1856. The lower level password (PW1) has
all the access of a normal user plus those made available with PW1.
The higher level password (PW2) has all of the access of PW1
plus those made available with PW2. The value of the password reside
in EE inside of PW2 memory.
TBL Sel
...................... <R-all/W-all><00h> Table Select. The upper memory tables of the
DS1856 are accessible by writing the correct table value in this register.
If the device is configured to have a Table 01h then writing a 00h or a
01h in this byte will access that table.
Config
0
Mode
.......................... <R-pw2/W-pw2><NV><03h>
a)
TEN.................... At Power-On this bit is HIGH, which enables autocontrol of the LUT.
If this bit is written to a ZERO then the resistor values are writeable by
the user and the LUT recalls are disabled. This allows the user to
interactively test their modules by manually writing resistor values. The
resistors will update with the new value at the end of the write cycle.
Thus both registers (Res0 and Res1) should be written in the same
write cycle. The 2-wire Stop condition is the end of the write cycle.
b)
AEN................... At Power-On this bit is HIGH, which enables autocontrol of the LUT.
If this bit is cleared to a ZERO then the temperature calculated index
value ( T index ) is writeable by the user and the updates of calculated
indexes are disabled. This allows the user to interactively test their
modules by controlling the indexing for the look-up tables. The recalled
values from the LUTs will appear in the resistor registers after the next
completion of a temperature conversion (just like it would happen in
auto mode). Both pots will update at the same time (just like it would
happen in auto mode).
T Index
....................... <R-pw2><W-pw2+AENb><00h> Holds the calculated index based on
the Temperature Measurement. This index is used for the address
during Look-up of Tables 4 and 5.
.
d)
V
CC
Lo .............. Low Warning Status for V
CC
measurement. This bit is set when the V
CC
supply is below the POA trip point value. It clears itself when a V
CC
measurement is completed and the value is above the low threshold.
e)
MON1 Hi........... High Warning Status for MON1 measurement.
f)
MON1 Lo.......... Low Warning Status for MON1 measurement.
g)
MON2 Hi........... High Warning Status for MON2 measurement.
h)
MON2 Lo.......... Low Warning Status for MON2 measurement.
Warning
1
................... <R-all><W-NA><00h> Low warning Status bits.
a)
MON3 HI........... High Warning Status for MON3 measurement.
b)
MON3 Lo........... Low Warning Status for MON3 measurement.
Register Descriptions (continued)
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| DS1922L | Temperature Logger iButton with 8kB Datalog Memory |
| DS1922T | Temperature Logger iButton with 8kB Datalog Memory |
| DS1922L-F5 | Temperature Logger iButton With 8kB Datalog Memory |
| DS1992 | 1kb/4kb Memory iButton |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1856E-025T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection |
| DS1856E-030 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection |
| DS1856E-030/R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection |
| DS1856E-030/T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection |
| DS1856E-030+ | 功能描述:數(shù)字電位計(jì) IC Dual Temp-Controlled Resistors RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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