DS1844S-100/T&R Maxim Integrated Products, DS1844S-100/T&R Datasheet - Page 6
![no-image](/images/manufacturer_photos/0/4/417/maxim_integrated_products_sml.jpg)
DS1844S-100/T&R
Manufacturer Part Number
DS1844S-100/T&R
Description
IC POT DIG QUAD 100K 20-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1844E-050.pdf
(14 pages)
Specifications of DS1844S-100/T&R
Taps
64
Resistance (ohms)
100K
Number Of Circuits
4
Temperature Coefficient
750 ppm/°C Typical
Memory Type
Volatile
Interface
2-Wire or 5-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Resistance In Ohms
100K
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
DS1844
0 for writing the DS1844. Once the command/control byte has been issued and the master receives the
acknowledgment from the DS1844, potentiometer wiper data is transmitted to the DS1844 by the master
device.
As in the case of the 5-wire serial protocol, a data byte for the DS1844 will contain potentiometer select
data and wiper position value. The six least significant bits of data specify the wiper position value while
the two most significant bits specify the potentiometer to be loaded. When the DS1844 has received the
data byte, it will respond with an ACKNOWLEDGE. At this point, the new wiper value for the
potentiometer selected will be updated in the DS1844. The master device, after the receipt of the
ACKNOWLEDGE, can continue to transmit additional data bytes or if the transaction is complete
respond with the STOP condition. Additionally, the DS1844 does not require a specific order for writing
a particular potentiometer wiper's data. The 2-wire serial timing diagram is presented in Figure 8.
6 of 14