Datasheet

5
FN8222.3
July 20, 2009
Power-up and Down Requirements
At all times, voltages on the potentiometer pins must be less
than ±V
CC
. The recall of the wiper position from non-volatile
memory is not in effect until the V
CC
supply reaches its final
value. The V
CC
ramp rate specification is always in effect.
AC OPERATION CHARACTERISTICS
t
Cl
CS to INC Setup 100 ns
t
lD
INC HIGH to U/D Change 100 ns
t
DI
U/D to INC Setup 2.9 µs
t
lL
INC LOW Period 1 µs
t
lH
INC HIGH Period 1 µs
t
lC
INC Inactive to CS Inactive 1 µs
t
CPH
CS Deselect Time (STORE) 20 ms
t
CPH
CS Deselect Time (NO STORE) 100 ns
t
IW
(5)
INC to V
W/RW
Change 100 µs
t
CYC
INC Cycle Time 2 µs
t
CYC
INC Input Rise and Fall Time 500 µs
t
R,
t
F
Power-up to Wiper Stable (Note 7) 500 µs
t
PU
V
CC
Power-up Rate (Note 7) 0.2 50 V/ms
NOTES:
3. Absolute linearity is utilized to determine actual wiper voltage vs expected voltage = [V
W(n)(actual)
- V
W(n)(expected )
] = ±1 MI Maximum.
4. Relative linearity is a measure of the error in step size between taps = V
W(n + 1)
- [V
W(n) + MI
] = +0.2 MI.
5. 1 MI = Minimum Increment = R
TOT
/99.
6. Typical values are for T
A
= +25°C and nominal supply voltage.
7. This parameter is not 100% tested.
Electrical Specifications Over recommended operating conditions unless otherwise stated. (Continued)
SYMBOL PARAMETER TEST CONDITIONS
LIMITS
UNITMIN
TYP
(Note 6) MAX
Test Circuit #1
TEST POINT
V
w
/R
W
V
R
/R
H
V
L
/R
L
V
S
Test Circuit #2
FORCE
V
L
/R
L
V
W
/R
w
V
H
/R
H
TEST POINT
CURRENT
Circuit #3 SPICE Macro Model
C
W
R
TOTAL
R
L
R
H
C
L
R
W
10pF
C
L
10pF
25pF
Endurance and Data Retention
PARAMETER MIN UNIT
Medium Endurance 100,000 Data changes per bit
per register
Data Retention 100 years
AC Conditions of Test
Input Pulse Levels 0V to 3V
Input Rise and Fall Times 10ns
Input Reference Levels 1.5V
X9C102, X9C103, X9C104, X9C503