參數(shù)資料
型號: DS3902U-530+T&R
廠商: Maxim Integrated Products
文件頁數(shù): 8/11頁
文件大?。?/td> 0K
描述: IC DIGITAL RESISTER EEPROM 8USOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 3,000
接片: 256
電阻(歐姆): 30k,50k
電路數(shù): 2
溫度系數(shù): 標(biāo)準(zhǔn)值 ±300 ppm/°C
存儲器類型: 非易失
接口: I²C(設(shè)備位址)
電源電壓: 2.4 V ~ 5.5 V
工作溫度: -40°C ~ 95°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-uMAX
包裝: 帶卷 (TR)
其它名稱: 90-3902T+530
DS3902
Dual, NV, Variable Resistors
with User EEPROM
6
_____________________________________________________________________
Detailed Description
The block diagram of the DS3902 is shown in the Block
Diagram section. Detailed descriptions of major com-
ponents follow.
Memory Map
A memory map of the DS3902 is shown in Table 1.
Resistors
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 I2C
serial interface (see the Resistor 0 and Resistor 1 regis-
Pin Description
PIN
NAME
FUNCTION
1
H0
Resistor 0 High Terminal
2
SDA
I2C Serial-Data Open-Drain
Input/Output
3
SCL
I2C Serial-Clock Input
4
GND
Ground
5
ADD_SEL
Address Select
6
H1
Resistor 1 High Terminal
7
N.C.
No Connection
8VCC
Power-Supply Voltage
Block Diagram
DS3902
SDA
SLAVE ADDRESS
00h
RESISTOR 0
02h
RESISTOR 1
MSBYTE
LSBYTE
03h
04-05h PASSWORD ENTRY (RAM)
06-07h PASSWORD SETTING
10-1Fh USER MEMORY (16 BYTES)
DEVICE MEMORY
(EEPROM)
MSB
LSB
01h
R1 R0
HI-Z
RESISTOR 0
256 POSITION
30k OR 15k
H0
HIGH-Z
8
7
XX XX
XX
SCL
GND
VCC
I2C
INTERFACE
ADD_SEL
RESISTOR 1
256 POSITION
50k
H1
HI-Z
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