參數(shù)資料
型號(hào)： BU9831F
廠商： Rohm CO.,LTD.
元件分類： 數(shù)字電位計(jì)
英文描述： Non-volatile electronic potentiometer
中文描述： 非易失性電子電位器
文件頁(yè)數(shù)： 1/13頁(yè)
文件大?。?/td> 149K
代理商： BU9831F
1
Memory ICs
Non-volatile electronic potentiometer
BU9831 / BU9831F
The BU9831 / BU9831F is a non-volatile electronic potentiometer with an internal 2k bit EEPROM. The resistance
value can be set by means of serial communications, and because the product contains an internal memory, condi-
tions can be retained.
In addition, the 2k bit memory capacity enables digital data to be stored in the memory.
Applications
Portable LCD backlight adjustment devices for notebook computers, and other sound adjustment devices for sets
Features
1) Internal 2k bit EEPROM
2) 100k
(1k
×
100 steps) electronic potentiometer
3) Data in memory is automatically read when power supply is turned on, and resistance value is set.
4) Resistance value can be set using serial communications.
5) Low current consumption
When operating: 3mA (max.)
In standby mode: 200
μ
A (max.)
Absolute maximum ratings (Ta = 25°C)
Parameter
Applied voltage
Power
dissipation
BU9831
BU9831F
Pd
Storage temperature
Operating temperature
Input voltage
1 Reduced by 5.0mW for each increase in Ta of 1
°
C over 25
°
C.
2 Reduced by 3.5mW for each increase in Ta of 1
°
C over 25
°
C.
Recommended operating conditions
Parameter
V
CC
Symbol
Tstg
Topr
—
– 0.3 ~ + 7.0
500
1
350
2
Limits
– 65 ~ + 125
– 20 ~ + 85
– 0.3 ~ V
CC
+ 0.3
mW
V
Unit
°
C
°
C
V
Wiper current
I
W
±
1.0
mA
Power supply voltage
Power supply voltage for writing
Vccwr
V
CC
Symbol
V
V
Unit
2.7 ~ 5.5
Limits
2.8 ~ 5.5
Input voltage
V
IN
V
0 ~ V
CC
Voltage at resistor ends
V
RHL
V
0 ~ V
CC
Wiper pin voltage
V
W
V
0 ~ V
CC
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