BU9831 Datasheet, PDF (5/13 Pages) Rohm – Non-volatile electronic potentiometer

Memory ICs
1MHz Clock
SK
Input
DIO
VIL
CS
VCC
A ICC
VCC
GND
VCC
SK
DIO
CS
BU9831 / BU9831F
VCC
A ISB
VCC
VCC
VH, VL, VW
GND
Fig. 5 Current consumption measurement circuit
VCC
CS
VH
SK
VW
V
DIO
VL
GND
Fig. 6 Standby current measurement circuit
I force
RT = ^V
I force
I force = 10µA
Fig. 7 Total resistance measurement circuit
VCC
CS
SK
DIO
GND
VH
VW
V
VL
V force
Measured after wiper
position is set to 00h
RWL = V / IW
V force = 1 / 2 · VCC
IW
Fig. 8 Wiper resistance measurement circuit on Low side
VCC
CS
VH
SK
VW
DIO
GND
VL
V
IW
V force
Measured after wiper
position is set to 64h
RWL = V / IW
V force = 1 / 2 · VCC
Fig. 9 Wiper resistance measurement circuit on High side
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