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參數(shù)資料
| 型號： | X9418YV24-2.7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Hook-Up Wire; Conductor Size AWG:24; No. Strands x Strand Size:19 x 36; Jacket Color:Orange; Approval Bodies:UL; Approval Categories:UL AWM Style 1180; Passes VW-1 Flame Test; Cable/Wire MIL SPEC:MIL-W-16878/5 Type EE RoHS Compliant: Yes |
| 中文描述： | DUAL 2.5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDSO24 |
| 封裝： | 4.40 MM, TSSOP-24 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 386K |
| 代理商： | X9418YV24-2.7 |
X9418
Characteristics subject to change without notice.
5 of 21
REV 1.1.5 7/23/02
www.xicor.com
Figure 3. Two-Byte Instruction Sequence
S
T
A
R
T
0
1
0
1
A3
A2
A1
A0
A
C
K
I3
I2
I1
I0
R1
R0
0
P0
A
C
K
SCL
SDA
S
T
O
P
The Increment/Decrement command is different from
the other commands. Once the command is issued and
the X9418 has responded with an acknowledge, the
master can clock the selected wiper up and/or down in
one segment steps; thereby, providing a fine tuning
capability to the host. For each SCL clock pulse (t
HIGH
)
while SDA is HIGH, the selected wiper will move one
resistor segment towards the V
H
/R
H
terminal. Similarly,
for each SCL clock pulse while SDA is LOW, the
selected wiper will move one resistor segment towards
the V
L
/R
L
terminal. A detailed illustration of the
sequence and timing for this operation are shown in
Figures 5 and 6 respectively.
Table 1. Instruction Set
Note:
(7) 1/0 = data is one or zero
Instruction
Instruction Set
I
1
I
0
0
1
Operation
I
3
1
I
2
0
R
1
0
R
0
0
P
1
0
P
0
1/0
Read Wiper Counter
Register
Write Wiper Counter
Register
Read Data Register
Read the contents of the Wiper Counter Register
pointed to by P
0
Write new value to the Wiper Counter Register
pointed to by P
0
Read the contents of the Data Register pointed to
by P
0
and R
1
–R
0
Write new value to the Data Register pointed to by
P
0
and R
1
–R
0
Transfer the contents of the Data Register pointed
to by P
0
and R
1
–R
0
to its associated Wiper Counter
Register
Transfer the contents of the Wiper Counter Register
pointed to by P
0
to the Data Register pointed to by
R
1
–R
0
Transfer the contents of the Data Registers pointed
to by R
1
–R
0
of both pots to their respective Wiper
Counter Registers
Transfer the contents of both Wiper Counter
Registers to their respective data Registers pointed
to by R
1
–R
0
of both pots
Enable Increment/decrement of the Wiper Counter
Register pointed to by P
0
1
0
1
0
0
0
0
1/0
1
0
1
1
1/0
1/0
0
1/0
Write Data Register
1
1
0
0
1/0
1/0
0
1/0
XFR Data Register to
Wiper Counter Register
1
1
0
1
1/0
1/0
0
1/0
XFR Wiper Counter
Register to Data Register
1
1
1
0
1/0
1/0
0
1/0
Global XFR Data
Registers to Wiper
Counter Registers
Global XFR Wiper
Counter Registers to
Data Register
Increment/Decrement
Wiper Counter Register
0
0
0
1
1/0
1/0
0
0
1
0
0
0
1/0
1/0
0
0
0
0
1
0
0
0
0
1/0
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