REV 1.1.9 1/30/03

Characteristics subject to change without notice.

19 of 26

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X9521

– Preliminary Information

A.C. CHARACTERISTICS (See Figure 22, Figure 23, Figure 24)

A.C. TEST CONDITIONS

NONVOLATILE WRITE CYCLE TIMING

Notes: 1.

Typical values are for TA = 25˚C and VCC = 5.0V

Notes: 2.

Cb = total capacitance of one bus line in pF.

Notes: 3.

Over recommended operating conditions, unless otherwise specified

Notes: 4.

tWC is the time from a valid STOP condition at the end of a write sequence to the end of the self-timed internal nonvolatile write

cycle. It is the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.

Notes: 5.

This parameter is not 100% tested.

Symbol

Parameter

400kHz

Min

Max

Units

SCL Clock Frequency

0

400

KHz

Pulse width Suppression Time at inputs

50

ns

SCL LOW to SDA Data Out Valid

0.1

0.9

µs

Time the bus free before start of new transmission

1.3

µs

Clock LOW Time

1.3

µs

Clock HIGH Time

0.6

µs

Start Condition Setup Time

0.6

µs

Start Condition Hold Time

0.6

µs

Data In Setup Time

100

ns

Data In Hold Time

0

µs

Stop Condition Setup Time

0.6

µs

Data Output Hold Time

50

ns

SDA and SCL Rise Time

20 +.1Cb

(2)

300

ns

SDA and SCL Fall Time

20 +.1Cb

(2)

300

ns

WP Setup Time

0.6

µs

WP Hold Time

0

µs

Cb

Capacitive load for each bus line

400

pF

Input Pulse Levels

Input Rise and Fall Times

10ns

Input and Output Timing Levels

Output Load

See Figure 20

Symbol

Parameter

Min.

Typ.(1)

Max.

Units

Nonvolatile Write Cycle Time

5

10

ms

Symbol

Parameter

Max

Units

Test Conditions

Output Capacitance (SDA, V1RO, V2RO, V3RO)

8

pF

Input Capacitance (SCL, WP)

6

pF