BU9831 Datasheet, PDF (4/13 Pages) Rohm – Non-volatile electronic potentiometer

Memory ICs
BU9831 / BU9831F
(unless otherwise noted, Ta = – 20 to + 85°C, VCC = 3V ± 10%)
Parameter
Symbol Min. Typ. Max. Unit
Input low level voltage
VIL
—
—
0.2 ×
VCC
V
Input high level voltage
VIH
0.8 ×
VCC
—
—
V
Output low level voltage VOL
0
—
0.4
V
Output high level voltage VOH
VCC –
0.4
—
VCC
V
Input leakage current
ILI
–1
—
1
µA
Output leakage current
ILO
–1
—
1
µA
Operating current consumption ICC
—
—
2
mA
Standby current
ISB
—
—
100
µA
SK frequency
fSK
—
—
500
kHz
Total resistance
RT
—
100
—
kΩ
Wiper resistance
RW
—
1
2
kΩ
Resistance potential on High side VVH
0
—
VCC
V
Resistance potential on Low side VVL
0
—
VCC
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
CS
DIO
A
GND
VO = 0 ~ VCC
Fig. 3 Input leakage current measurement circuit
4
Fig. 4 Output leakage current measurement circuit