6

FN6912.1

April 15, 2010

SDA vs SCL Timing

(Note 19)

SDA and SCL Rise Time

20 +

0.1*Cb

250

ns

(Note 19)

SDA and SCL Fall Time

20 +

0.1*Cb

250

ns

Cb

(Note 19)

Capacitive Loading of SDA or SCL

Total on-chip and off-chip

10

400

pF

Rpu

(Note 19)

SDA and SCL Bus Pull-up Resistor

Off-chip

For Cb = 400pF, max is about 2k

Ω ~ 2.5kΩ

For Cb = 40pF, max is about 15k

Ω ~ 20kΩ

1k

Ω

A1 Setup Time

Before START condition

600

ns

A1 Hold Time

After STOP condition

600

ns

NOTES:

incremental voltage when changing from one tap to an adjacent tap.

13.

for i = 15 to 127 decimal, T = -40°C to +125°C. Max( ) is the maximum value of the wiper

voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.

14. MI =

00 hex respectively.

18.

for i = 15 to 127, T = -40°C to +125°C. Max( ) is the maximum value of the resistance and Min ( ) is

the minimum value of the resistance over the temperature range.

19. Limits should be considered typical and are not production tested.

20. In rheostat mode, if a current is injected into the RW terminal, the magnitude of the current should be such that the developed potential difference

between RW and RL terminals is at least 300mV, even at the minimum wiper setting. This ensures that the recommended operating condition

of V(RW)

≥ V(RL) + 0.3V is satisfied and the part operates in its most accurate resistance. Minimum and Maximum wiper setting can be

write cycle.

22. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by

characterization and are not production tested.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

(Note 22)

TYP

(Note 7)

MAX

(Note 22)

UNIT

Max V RW

()

i

() Min V RW

()

i

()

–

Max V RW

()

i

() Min V RW

()

i

()

+

[] 2

⁄

----------------------------------------------------------------------------------------------

165°C

-----------------

×

=

+

Max Ri

() Min Ri

()

–

[]

Max Ri

() Min Ri

()

+

[] 2

⁄

----------------------------------------------------------------

10

6

165°C

-----------------

×

=

+

SCL

SDA

(INPUT TIMING)

SDA

(OUTPUT TIMING)

ISL22317