DS1848B-050 Maxim Integrated Products, DS1848B-050 Datasheet - Page 5

• Manufacturer Part Number: DS1848B-050
• Description: Digital Potentiometer ICs
• Manufacturer: Maxim Integrated Products

Specifications of DS1848B-050

• Number Of Pots: Dual
• Taps Per Pot: 256
• Resistance: 10 KOhms, 50 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire)
• Operating Supply Voltage: 3.3 V, 5 V
• Supply Current: 1 mA
• Maximum Operating Temperature: + 95 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 3 V
• Package / Case: CSBGA-16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Memory Location Name of Location
E2h
E3h
E4h
E5h to E6h
E7h
E8h to EFh
F0h
F1h
F2h to FFh
User Memory
User Memory
User memory
Temperature MSB
Temperature LSB
Address Pointer
Address Select
Resistor 0 Setting
Resistor 1 Setting
5 of 17
Calculated, current resistor address (0h – 47h).
General purpose user memory (SRAM)
General purpose user memory (SRAM)
In the user-controlled setting mode, this block
In the user-controlled setting mode, this block
General purpose user memory (SRAM)
Function of Location
With AEN = 0 the user can operate in a test
mode. Address updates made from the
temperature sensor will cease. The user can load a
memory location into E4h and verify that the
values in locations F0h and F1h are the expected
user-defined values.
This byte contains the MSB of the 13-bit 2s
complement temperature output from the
temperature sensor.
This byte contains the LSB of the 13-bit 2s
complement temperature output from the
temperature sensor.
For example temperature readings, refer to Table
2.
The user-defined resistor setting at this location in
the respective look-up table will be loaded into
F0h and F1h to set the two resistors.
Internal or external device address select. This
byte allows the user to use the external address
pins or an internal register location to determine
the device address.
ENB = 0 and external A2, A1, A0 grounded,
device will use internal address bits (A2, A1, A0)
in this register
ENB = 1, external A2, A1, A0 = any setting,
device will use external address pins
Default setting is 01h. The device uses external
pins to determine its address.
contains the resistor 0 setting.
contains the resistor 1 setting.
2
S 2
0
2
-1
7
2
2
-2
6
2
2
5
-3
A2 A1 A0
2
2
4
-4
2
X X X
3
2
2
ENB
2
1