DS1856E-020 Maxim Integrated Products, DS1856E-020 Datasheet - Page 29
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DS1856E-020
Manufacturer Part Number
DS1856E-020
Description
Digital Potentiometer ICs
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1856B-050.pdf
(31 pages)
Specifications of DS1856E-020
Number Of Pots
Dual
Taps Per Pot
256
Resistance
20 KOhms
Wiper Memory
Non Volatile
Digital Interface
Serial (2-Wire)
Operating Supply Voltage
3.3 V, 5 V
Supply Current
2 mA
Maximum Operating Temperature
+ 95 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.85 V
Package / Case
TSSOP-16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS1856E-020
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
DS1856E-020+
Manufacturer:
MAXIM/美信
Quantity:
20 000
Stop data transfer: A change in the state of the data
line from low to high while the clock line is high defines
the STOP condition.
Data valid: The state of the data line represents valid
data when, after a START condition, the data line is sta-
ble for the duration of the high period of the clock signal.
The data on the line can be changed during the low peri-
od of the clock signal. There is one clock pulse per bit of
data. Figures 5 and 6 detail how data transfer is accom-
Figure 5. 2-Wire Data Transfer Protocol
Figure 6. 2-Wire AC Characteristics
nally Calibrated Monitors and Password Protection
Dual, Temperature-Controlled Resistors with Inter-
SDA
SCL
SDA
SCL
CONDITION
START
STOP
t
BUF
START
MSB
1
t
HD:STA
2
t
SLAVE ADDRESS
LOW
6
____________________________________________________________________
t
R
t
HD:DAT
7
DIRECTION
t
F
R/W
BIT
8
t
HIGH
SIGNAL FROM RECEIVER
ACKNOWLEDGEMENT
t
SU:DAT
ACK
9
plished on the 2-wire bus. Depending on the state of the
R/W bit, two types of data transfer are possible.
Each data transfer is initiated with a START condition
and terminated with a STOP condition. The number of
data bytes transferred between START and STOP con-
ditions is not limited and is determined by the master
device. The information is transferred byte-wise and
each receiver acknowledges with a ninth bit.
REPEATED
START
1
t
SU:STA
2
REPEATED IF MORE BYTES
t
HD:STA
ARE TRANSFERRED
3–7
SIGNAL FROM RECEIVER
ACKNOWLEDGEMENT
8
ACK
9
t
SP
OR REPEATED
CONDITION
CONDITION
START
STOP
t
SU:STO
29