X9428WS16I-2.7 Intersil, X9428WS16I-2.7 Datasheet - Page 7

• Manufacturer Part Number: X9428WS16I-2.7
• Description: IC DIGITAL POT 10K 64TP 16SOIC
• Manufacturer: Intersil
• Series: XDCP™r

Specifications of X9428WS16I-2.7

• Taps: 64
• Resistance (ohms): 10K
• Number Of Circuits: 1
• Temperature Coefficient: 300 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Resistance In Ohms: 10K
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 3. Two-Byte Instruction Sequence
The Increment/Decrement command is different from
the other commands. Once the command is issued
and the X9428 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
Table 1. Instruction Set
Note:
Read Wiper Counter
Register
Write Wiper Counter
Register
Read Data Register
Write Data Register
XFR Data Register to
Wiper Counter Register
XFR Wiper Counter
Register to Data Register
Increment/Decrement
Wiper Counter Register
HIGH
) while SDA is HIGH, the selected wiper will
(7) 1/0 = data is one or zero
Instruction
SCL
SDA
S
T
A
R
T
0
7
I
1
1
1
1
1
1
0
3
1
I
0
0
0
1
1
1
0
0
2
1
I
0
1
1
0
0
1
1
1
Instruction Set
A3 A2
I
1
0
1
0
1
0
0
0
1/0 1/0
1/0 1/0
R
1/0 1/0
1/0 1/0
0
0
0
1
0
R
0
0
0
A0
0
X9428
A
C
K
X
0
0
0
0
0
0
0
1
I3
1/0 Enable Increment/decrement of the Wiper Counter
X
move one resistor segment towards the V
terminal. Similarly, for each SCL clock pulse while
SDA is LOW, the selected wiper will move one resistor
segment towards the V
illustration of the sequence and timing for this
operation are shown in Figures 5 and 6 respectively.
0
0
0
0
0
0
0
I2
Read the contents of the Wiper Counter Register
Write new value to the Wiper Counter Register
Read the contents of the Data Register pointed to by
R
Write new value to the Data Register pointed to by
R
Transfer the contents of the Data Register pointed to
by R
Transfer the contents of the Wiper Counter Register
to the Data Register pointed to by R
Register
1
1
I1
- R
- R
1
I0
0
0
- R
0
R1 R0 0
to its Wiper Counter Register
Operation
L
0
/R
L
A
C
K
terminal. A detailed
S
T
O
P
1
- R
0
April 26, 2006
FN8197.1
H
/R
H