DS3902U-530+T&R Maxim Integrated Products, DS3902U-530+T&R Datasheet - Page 6

• Manufacturer Part Number: DS3902U-530+T&R
• Description: IC DIGITAL RESISTER EEPROM 8USOP
• Manufacturer: Maxim Integrated Products

Specifications of DS3902U-530+T&R

• Taps: 256
• Resistance (ohms): 30K, 50K
• Number Of Circuits: 2
• Temperature Coefficient: 300 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 95°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Resistance In Ohms: 30K, 50K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-3902T+530

Dual, NV, Variable Resistors
with User EEPROM
6
PIN
_____________________________________________________________________
1
2
3
4
5
6
7
8
ADD_SEL
ADD_SEL Address Select
GND
SDA
SCL
V
NAME
GND
CC
SDA
N.C.
SCL
V
H0
H1
CC
V
Resistor 0 High Terminal
I
Input/Output
I
Ground
Resistor 1 High Terminal
No Connection
Power-Supply Voltage
CC
2
2
C Serial-Data Open-Drain
C Serial-Clock Input
INTERFACE
I
2
C
Pin Description
8
FUNCTION
7
00h
01h
02h
03h
04-05h PASSWORD ENTRY (RAM)
06-07h PASSWORD SETTING
10-1Fh USER MEMORY (16 BYTES)
MSB
X X X X X X
MSBYTE
DEVICE MEMORY
SLAVE ADDRESS
RESISTOR 0
RESISTOR 1
(EEPROM)
DS3902
LSBYTE
The block diagram of the DS3902 is shown in the Block
Diagram section. Detailed descriptions of major com-
ponents follow.
A memory map of the DS3902 is shown in Table 1.
The DS3902 contains two, 256-position (plus High-Z),
NV, variable digital resistors. Pins H0 and H1 are the
high terminals of Resistor 0 and Resistor 1, respective-
ly. The low terminals of both resistors are tied to ground
internally. The resistors are programmed using the I
serial interface (see the Resistor 0 and Resistor 1 regis-
R1 R0
HI-Z
LSB
8
8
Detailed Description
RESISTOR 0
256 POSITION
30k OR 15kΩ
RESISTOR 1
256 POSITION
50kΩ
HIGH-Z
HI-Z
Block Diagram
Memory Map
H0
H1
Resistors
2
C