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參數(shù)資料
| 型號： | X9440WV24I |
| 廠商： | Intersil |
| 文件頁數(shù)： | 16/21頁 |
| 文件大小： | 0K |
| 描述： | IC DUAL PROG COMP 10K 24TSSOP |
| 標(biāo)準(zhǔn)包裝： | 75 |
| 系列： | XDCP™ |
| 接片： | 64 |
| 電阻（歐姆）： | 10k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 ±300 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | 6 線 SPI（芯片選擇，設(shè)備位址） |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-TSSOP |
| 包裝： | 管件 |
4
FN8200.0
March 28, 2005
REGISTERS
Both digitally-controlled potentiometers and voltage com-
parators share the serial interface and share a common
architecture. Each potentiometer and voltage comparator
is associated with wiper counter and analog control reg-
isters and eight data registers. A detailed discussion of
the register organization and array operation follows.
Wiper Counter (WCR) and Analog Control
Registers (ACR)
The X9440 contains two wiper counter registers: one
for each XDCP potentiometer and two Analog Control
Registers, and one for each of the two voltage com-
parators. The wiper counter register is equivalent to a
serial-in, parallel-out counter with its outputs decoded
to select one of sixty-four switches along its resistor
array. The contents of the wiper counter register and
analog control register can be altered in four ways: it
may be written directly by the host via the Write WCR
instruction (serial load); it may be written indirectly by
transferring the contents of one of four associated
data registers (DR) via the XFR data register instruc-
tion (parallel load); it can be modified one step at a
time by the increment/ decrement instruction (WCR
only). Finally, it is loaded with the contents of its data
register zero (R0) upon power-up.
The wiper counter and analog control register are vol-
atile registers; that is, their contents are lost when the
X9440 is powered-down. Although the registers are
automatically loaded with the value in R0 upon power-
up, it should be noted this may be different from the
value present at power-down.
Programming the ACR is similar to the WCR. How-
ever, the 6 bits in the WCR positions the wiper in the
resistor array while 3 bits in the ACR control the com-
parator and its output.
Data Registers (DR)
Each potentiometer and each voltage comparator has
four non volatile data registers (DR). These can be
read or written directly by the host and data can be
transferred between any of the four data registers and
the WCR or ACR. It should be noted all operations
changing data in one of these registers is a non vola-
tile operation and will take a maximum of 10ms.
If the application does not require storage of multiple
settings for the potentiometer or comparator, these reg-
isters can be used as regular memory locations that
could store system parameters or user preference data.
Figure 1. Detailed Potentiometer Block Diagram
Serial Data Path
From Interface
Circuitry
Register 0
Register 1
Register 2
Register 3
Serial
Bus
Input
Parallel
Bus
Input
Counter
Register
Inc/Dec
Logic
UP/DN
CLK
Modified SCK
UP/DN
VH
VL
VW
8
6
C
o
u
n
t
e
r
D
e
c
o
d
e
If WC = 00[H] VW = VL
If WC = 3F[H] VW = VH
Wiper
(One of Two Arrays)
(WCR)
X9440
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9440WV24I-2.7 | 功能描述:IC DUAL PROG COMP 10K 24TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 35 ppm/°C 存儲器類型:非易失 接口:3 線串口 電源電壓:2.7 V ~ 5.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN-EP（3x3） 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1399 (CN2011-ZH PDF) 其它名稱:MAX5423ETA+TCT |
| X9440YP24 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with SPI Interface |
| X9440YP242.7 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| X9440YP24-2.7 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with SPI Interface |
| X9440YP24I | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with SPI Interface |
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