REV 1.1.9 1/30/03

Characteristics subject to change without notice.

18 of 26

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X9521

– Preliminary Information

D.C. OPERATING CHARACTERISTICS

Notes: 1.

The device enters the Active state after any START, and remains active until: 9 clock cycles later if the Device Select Bits in the

Slave Address Byte are incorrect; 200nS after a STOP ending a read operation; or tWC after a STOP ending a write operation.

Notes: 2.

The device goes into Standby: 200nS after any STOP, except those that initiate a high voltage write cycle; tWC after a STOP that

initiates a high voltage cycle; or 9 clock cycles after any START that is not followed by the correct Device Select Bits in the Slave

Address Byte.

Notes: 3.

Current through external pull up resistor not included.

Notes: 4.

Notes: 5.

Notes: 6.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions / Notes

(X9521: Active)

Read memory array

(3)

Write nonvolatile memory

0.4

1.5

mA

(X9521:Standby)

With 2-Wire bus activity

(3)

No 2-Wire bus activity

50

50

µA

WP = Vss or Open/Floating

Input Leakage Current (SCL, SDA)

0.1

10

µA

Input Leakage Current (WP)

10

µA

Analog Input Leakage

1

10

µA

analog pins floating

Output Leakage Current (SDA)

0.1

10

µA

X9521 is in Standby

(2)

Input LOW Voltage (SCL, SDA, WP)

-0.5

0.8

V

Input HIGH Voltage (SCL,SDA, WP)

2.0

+0.5

V

SDA Output Low Voltage

0.4

V