DS3930E+T&R Maxim Integrated Products, DS3930E+T&R Datasheet - Page 7

• Manufacturer Part Number: DS3930E+T&R
• Description: IC POT NV HEX I/O MEM 20-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS3930E+T&R

• Taps: 256
• Resistance (ohms): 16.5K
• Number Of Circuits: 6
• Temperature Coefficient: 250 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: 20-TSSOP
• Resistance In Ohms: 16.5K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 1. DS3930 Functional Diagram
The DS3930 contains six NV potentiometers with 64
bytes of NV user memory (EEPROM), and four pro-
grammable NV I/O pins. Figure 1 is a functional dia-
gram of the DS3930.
GND
SDA
SCL
V
CC
A0
A1
A2
Detailed Description
3Fh
40h
EFh
F0h
F1h
F2h
F3h
F4h
F5h
F6h
F7h
F8h
FFh
Hex Nonvolatile Potentiometer with
00h
INTERFACE
POT0 CONTROL
POT1 CONTROL
POT2 CONTROL
POT3 CONTROL
POT4 CONTROL
POT5 CONTROL
I/O CONTROL
2-WIRE
64 BYTES OF
_____________________________________________________________________
RESERVED
RESERVED
I/O STATE
EEPROM
EEPROM
DS3930
4
8
The six potentiometers share a common low side and
are separated into two groups of three potentiometers,
each group sharing a common high side. The six 256-
position potentiometers are controllable using six 8-bit
EEPROM registers through the 2-wire interface.
8
8
8
8
8
8
I/O CELL X 4
50kΩ
50kΩ
50kΩ
50kΩ
50kΩ
50kΩ
I/O and Memory
POT0
POT1
POT2
POT3
POT4
POT5
HI
W
W
W
LO
HI
W
W
W
I/O
I/O
I/O
I/O
Potentiometers
0
1
2
3
4
5
0-2
3-5
0-5
0
1
2
3
7