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BU9831F PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BU9831F
기능 Non-volatile electronic potentiometer
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BU9831F 데이터시트, 핀배열, 회로
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(1kΩ × 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: 200µA (max.)
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Applied voltage
Power
BU9831
dissipation BU9831F
VCC
Pd
– 0.3 ~ + 7.0
5001
3502
Storage temperature
Tstg
– 65 ~ + 125
Operating temperature
Topr
– 20 ~ + 85
Input voltage
— – 0.3 ~ VCC + 0.3
Wiper current
IW ± 1.0
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
Symbol
Power supply voltage
VCC
Power supply voltage for writing
Vccwr
Input voltage
VIN
Voltage at resistor ends
VRHL
Wiper pin voltage
VW
Limits
2.7 ~ 5.5
2.8 ~ 5.5
0 ~ VCC
0 ~ VCC
0 ~ VCC
Unit
V
mW
°C
°C
V
mA
Unit
V
V
V
V
V
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BU9831F pdf, 반도체, 판매, 대치품
Memory ICs
BU9831 / BU9831F
(unless otherwise noted, Ta = – 20 to + 85°C, VCC = 3V ± 10%)
Parameter
Symbol Min.
Input low level voltage
VIL
Input high level voltage VIH
Output low level voltage VOL
Output high level voltage VOH
Input leakage current
Output leakage current
Operating current consumption
Standby current
SK frequency
Total resistance
Wiper resistance
Resistance potential on High side
Resistance potential on Low side
ILI
ILO
ICC
ISB
fSK
RT
RW
VVH
VVL
0.8 ×
VCC
0
VCC
0.4
–1
–1
0
0
Typ.
100
1
Max.
0.2 ×
VCC
0.4
VCC
1
1
2
100
500
2
VCC
VCC
Unit
V
V
V
V
µA
µA
mA
µA
kHz
k
k
V
V
Conditions
CS, SK, DIO pin
Measurement
Circuit
CS, SK, DIO pin
IOL = 100µA
IOH = – 100µA
VIN = 0 ~ VCC
VOUT = 0 ~ VCC, CS = VCC
f = 1MHz, tE / W = 10ms (WRITE)
CS, SK, DIO, VH, VL, VW = VCC
Fig.1
Fig.6
Fig.3
Fig.4
Fig.5
Fig.6
If = 10µA
IW = – 500µA
Fig.7
Fig.8
Measurement circuits
VCC
VCC
VCC
GND
IOL
DIO
V VOL
VCC
GND
IOH
DIO
V VOH
Data set when output is LOW
Fig. 1 LOW output voltage measurement circuit
VCC
Data set when output is HIGH
Fig. 2 HIGH output voltage measurement circuit
VCC
VCC
VIN = 0 ~ VCC
VCC
ILI
A DIO, SK, CS
GND
VCC
ILO
ACS DIO
GND
VO = 0 ~ VCC
Fig. 3 Input leakage current measurement circuit
4
Fig. 4 Output leakage current measurement circuit

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BU9831F 전자부품, 판매, 대치품
Memory ICs
(unless otherwise noted, Ta = – 20 to + 85°C, VCC = 5V ± 10%)
Parameter
CS setup time
CS hold time
Data setup time
Data hold time
DO rise delay time
DO fall delay time
Self-timed programming cycle
CS minimum HIGH time
Time during which READY / BUSY display is effective
Time that DO is HIGH-Z from (CS)
Data clock HIGH time
Data clock LOW time
Resistance value stabilization time
Symbol
tCSS
tCSH
tDIS
tDIH
tPD1
tPD0
tE / W
tCS
tSV
tOH
tWH
tWL
tAW
Min.
400
0
300
300
2
0
900
900
Typ.
Max.
700
700
15
2
800
1000
Unit
ns
ns
ns
ns
ns
ns
ms
µs
µs
ns
ns
ns
µs
BU9831 / BU9831F
Synchronous data I / O timing
CS
SK
Input DIO
Output DIO
t CSS
t WL
t DIS
t PD
t WH
t DIH
t PD
t CS
t CSH
t OH
Fig. 10 Synchronous data I / O timing
Reading of input data is done at the rising edge of SK.
Output of data is synchronized to the falling edge of SK.
Between commands, CS should be set to HIGH for longer than tCS.
If CS remains LOW, the next command cannot be received.
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부품번호상세설명 및 기능제조사
BU9831

Non-volatile electronic potentiometer

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BU9831F

Non-volatile electronic potentiometer

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