X9258 datasheet(13/22 Pages) XICOR

13 / 22 page

X9258

Characteristics subject to change without notice.

13 of 22

REV 1.1.7 2/4/03

www.xicor.com

D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)

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/255 or (VH/RH—VL/RL)/255, single pot

(4) Max. = all four arrays cascaded together, Typical = individual array resolutions.

ENDURANCE AND DATA RETENTION

CAPACITANCE

POWER-UP TIMING

POWER UP AND DOWN REQUIREMENT

The are no restrictions on the sequencing of the bias supplies VCC, V+, and V- provided that all three supplies

reach their ﬁnal values within 1msec of each other. At all times, the voltages on the potentiometer pins must be less

than V+ and more than V-. The recall of the wiper position from nonvolatile memory is not in effect until all supplies

reach their ﬁnal value. The VCC ramp rate spec is always in effect.

Notes: (5) This parameter is periodically sampled and not 100% tested.

(6) tPUR and tPUW are the delays required from the time the third (last) power supply (VCC, V+ or V-) is stable until the speciﬁc

instruction can be issued. These parameters are periodically sampled and not 100% tested.

(7) Sample tested only.

Symbol

Parameter

Limits

Test Conditions

Min.

Typ.

Max.

Unit

ICC1

VCC supply current (Non-

volatile Write)

1mA

fSCL = 400kHz, SDA = Open,

Other Inputs = VSS

ICC2

VCC supply current (move

wiper, write, read)

100

µA

fSCL = 400kHz, SDA = Open,

Other Inputs = VSS

ISB

VCC current (standby)

µA

SCL = SDA = VCC, Addr. = VSS

ILI

Input leakage current

µA

VIN = VSS to VCC

ILO

Output leakage current

µA

VOUT = VSS to VCC

VIH

Input HIGH voltage

VCC x 0.7

VCC + 0.1

VIL

Input LOW voltage

–0.5

VCC x 0.3

VOL

Output LOW voltage

0.4

IOL = 3mA

Parameter

Min.

Unit

Minimum endurance

100,000

Data changes per bit per register

Data retention

100

years

Symbol

Test

Max.

Unit

Test Conditions

CI/O

(5)

Input/output capacitance (SDA)

VI/O = 0V

CIN

(5)

Input capacitance (A0, A1, A2, A3, and SCL)

VIN = 0V

Symbol

Parameter

Min.

Max.

Unit

tPUR

(6)

Power-up to initiation of read operation

tPUW

(6)

Power-up to initiation of write operation

tR VCC

(7)

VCC Power up ramp

0.2

V/msec

X9258 Datasheet(PDF) 13 Page - Xicor Inc.

X9258 Datasheet(HTML) 13 Page - Xicor Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Datasheet Download

Link URL