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參數(shù)資料
| 型號： | X9119TV14IZ-2.7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Single Supply/Low Power/1024-Tap/2-Wire Bus |
| 中文描述： | 100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO14 |
| 封裝： | 4.40 MM, ROHS COMPLIANT, PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 9/23頁 |
| 文件大小： | 131K |
| 代理商： | X9119TV14IZ-2.7 |
X9119
– Preliminary Information
Characteristics subject to change without notice.
9 of 22
REV 1.1.11 3/12/02
www.xicor.com
Table 4. Wiper Control Register, WCR (10-bit), WCR9–WCR0:
Used to store the current wiper position (Volatile, V)
Table 5. Data Register, DR (10-bit), Bit 9–Bit 0:
Used to store wiper positions or data (Non-Volatile, NV)
WCR9
V
(MSB)
WCR8
V
WCR7
V
WCR6
V
WCR5
V
WCR4
V
WCR3
V
WCR2
V
WCR1
V
WCR0
V
(LSB)
Bit 9
NV
MSB
Bit 8
NV
Bit 7
NV
Bit 6
NV
Bit 5
NV
Bit 4
NV
Bit 3
NV
Bit 2
NV
Bit 1
NV
Bit 0
NV
LSB
Four of the six instructions are four bytes in length.
These instructions are:
–
Read Wiper Counter Register
– read the current
wiper position of the selected potentiometer,
–
Write Wiper Counter Register
– change current
wiper position of the selected potentiometer,
–
Read Data Register
– read the contents of the
selected Data Register;
–
Write Data Register
– write a new value to the
selected Data Register.
The basic sequence of the four byte instructions is
illustrated in Figure 3. These four-byte instructions
exchange data between the WCR and one of the Data
Registers. A transfer from a data register to a WCR is
essentially a write to a static RAM, with the static RAM
controlling the wiper position. The response of the
wiper to this action will be delayed by t
WRL
. A transfer
from the WCR (current wiper position), to a data
register is a write to nonvolatile memory and takes a
minimum of t
WR
to complete. The transfer can occur
between one of the four potentiometers and one of its
associated registers.
Two instructions (see Figure 4) require a two-byte
sequence to complete. These instructions transfer data
between the host and the X9119; either between the
host and one of the data registers or directly between
the host and the Wiper Counter Register. These
instructions are:
–
XFR Data Register to Wiper Counter Register
–
This transfers the contents of one specified Data
Register to the Wiper Counter Register.
–
XFR Wiper Counter Register to Data Register
–
This transfers the contents of the Wiper Counter
Register to the specified Data Register.
See Instruction format for more details.
P
OWER
U
P
AND
D
OWN
R
EQUIREMENTS
There are no restrictions on the power-up condition of
Vcc and the voltages applied to the potentiometer pins
provided that the Vcc is always more positive than or
equal to the voltages at R
H
, R
L
, and R
W
, i.e. V
CC
≥
R
H
,
R
L
, R
W
. There are no restrictions on the power-down
condition. However, the datasheet parameters for the
DCP do not apply until 1milisecond after V
CC
reaches
its final value.
Figure 3. Two-Byte Instruction Sequence
S
T
A
R
T
0
1
0
1
A2
A1
A0 R/W
A
C
K
I2
I1
I0
0
RB RA 0
A
C
K
SCL
SDA
S
T
O
P
0
0
0
ID3 ID2 ID1 ID0
Device ID
Internal
Address
Instruction
Opcode
Register
Address
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| X91RP4 | 功能描述:消費(fèi)電池與相機(jī)電池 AA 2900mAh 4 PK Titanium Alkaline RoHS:否 制造商:FDK Batteries 電池大小:CR1/3N 輸出電壓:3 V 容量:160 mAh 化學(xué)性質(zhì):Lithium 端接類型:Pressure Contacts 可再充電/不可再充電:Non-Rechargeable |
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