10
FN8163.2
August 30, 2006
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Notes: (1) Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as
a potentiometer.
(2) Relative Linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potenti-
ometer. It is a measure of the error in step size.
(3) MI = RTOT/63 or (V
H
/R
H
–V
L
/R
L
)/63, single pot
ENDURANCE AND DATA RETENTION
CAPACITANCE
POWER-UP TIMING
Notes: (5) This parameter is periodically sampled and not 100% tested.
(6) t
PUR
and t
PUW
are the delays required from the time V
CC
is stable until the specified operation can be initiated. These parameters are
periodically sampled and not 100% tested.
Power Up Requirements (Power up sequencing can affect correct recall of the wiper registers)
The preferred power-on sequence is as follows: First V
CC
, then the potentiometer pins. It is suggested that V
CC
reach 90% of its final value before power is applied to the potentiometer pins. The V
CC
ramp rate specification should
be met, and any glitches or slope changes in the V
CC
line should be held to <100mV if possible. Also, V
CC
should not
reverse polarity by more than 0.5V.
Symbol Parameter
Limits
Test ConditionsMin. Typ. Max. Unit
l
CC
Supply Current (Active) 3 mA f
SCL
= 100kHz, SDA = Open, Other Inputs = V
SS
I
SB
V
CC
Current (Standby) 200 500 µA SCL = SDA = V
CC
, Addr. = V
SS
I
LI
Input Leakage Current 10 µA V
IN
= V
SS
to V
CC
I
LO
Output Leakage Current 10 µA V
OUT
= V
SS
to V
CC
V
IH
Input HIGH Voltage 2 V
CC
+ 1 V
V
IL
Input LOW Voltage -1 0.8 V
V
OL
Output LOW Voltage 0.4 V I
OL
= 3mA
Parameter Min. Unit
Minimum endurance 100,000 Data changes per bit per register
Data retention 100 years
Symbol Parameter Max. Unit Test Conditions
C
I/O
(5)
Input/output capacitance (SDA) 8 pF V
I/O
= 0V
C
IN
(5)
Input capacitance (A0, A1, A2, A3 and SCL) 6 pF V
IN
= 0V
Symbol Parameter Min. Max. Unit
t
PUR
(6)
Power-up to initiation of read operation 1 ms
t
PUW
(6)
Power-up to initiation of write operation 5 ms
t
R
V
CC
V
CC
Power-up ramp rate 0.2 50 V/ms
X9221A
