參數(shù)資料
型號： 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)： 11/31頁
文件大小： 484K
代理商： DS1856E-025R
D
Dual, Temperature-Controlled Resistors with Inter-
nally Calibrated Monitors and Password Protection
____________________________________________________________________
11
Variable Resistors
The value of each variable resistor is determined by
a temperature-addressed look-up table, which can
assign a unique value (00h to FFh) to each resistor for
every 2°C increment over the -40°C to +102°C range
(see Table 3). See the
Temperature Conversion
section
for more information.
The variable resistors can also be used in manual
mode. If the TEN bit equals 0, the resistors are in man-
ual mode and the temperature indexing is disabled.
The user sets the resistors in manual mode by writing
to addresses 82h and 83h in Table 03 to control resis-
tors 0 and 1, respectively.
Memory Description
The memory of the DS1856 is divided into two areas
referred to as the Main Device and the Auxiliary
Device. The Main Device comprises all of the DS1856
specific memory while the Auxiliary Device consists of
128 bytes of general-purpose EEPROM and is espe-
cially useful in GBIC applications. Main and Auxiliary
ADEN
(ADDRESS
ENABLE)
NO. OF SEPARATE
DEVICE
ADDRESSES
ADDITIONAL
INFORMATION
0
1
2
See Figure 2
See Figure 3
1 (Main Device Only)
Table 4. ADEN Address Configuration
ADEN
ADFIX
AUXILIARY
ADDRESS
MAIN ADDRESS
0
0
A0h
A2h
0
1
A0h
EEPROM
(Table 03, 8Ch)
1
0
—
A2h
1
1
—
EEPROM
(Table 03, 8Ch)
Table 5. ADEN and ADFIX Bits
AUXILIARY DEVICE
EEPROM
AUXILIARY MEMORY
(128 BYTES)
00h
7Fh
127
7F
127
7F
128
80
183
B7
199
200
C7
C8
255
FF
2-WIRE ADDRRESS A0h
DEC HEX
0
0
MAIN DEVICE
LOWER MEMORY
TABLE SELECT BYTE
PASSWORD ENTRY
(PWE) (4 BYTES)
00h
7Fh
2-WIRE ADDRESS A2h (DEFAULT)
NOTE 1:
ADEN BIT = 0. AUXILIARY MEMORY IS ADDRESSED USING THE AUXILIARY DEVICE
NOTE 1.
2-WIRE SLAVE ADDRESS OF A0h, AND THE REMAINDER OF THE MEMORY IS
NOTE 1.
ADDRESSED USING THE MAIN DEVICE 2-WIRE SLAVE ADDRESS OF A2h
NOTE 1.
(WHEN ADFIX = 0).
NOTE 2:
TABLES 00h, 01h, AND 02h DO NOT EXIST.
DEC
0
M
A
HEX
0
TABLE 03h
CONFIGURATION
TABLE
80h
B7h
TABLE 04h
RESISTOR 0
LOOK-UP TABLE
(72 BYTES)
80h
C7h
TABLE 05h
RESISTOR 1
LOOK-UP TABLE
(72 BYTES)
80h
C7h
RESERVED AND
CALIBRATION
CONSTANTS
RESERVED AND
CALIBRATION
CONSTANTS
F0h
FFh
F0h
FFh
Figure 2. Memory Organization, ADEN = 0
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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 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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