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ISP1109BS

Universal Serial Bus transceiver with carkit support

Philips Electronics 

Philips Semiconductors

ISP1109

USB transceiver with carkit support

Table 61: Characteristics of I/O stages of I2C-bus lines (SDA, SCL)

Symbol Parameter

Conditions

Standard mode

Min Max

fSCL

tHD;STA

SCL clock frequency

hold time for the START

condition

0

100

4.0

-

t(SCL)L

t(SCL)H

tSU;STA

LOW period of the SCL clock

HIGH period of the SCL clock

setup time for the START

condition

4.7

-

4.0

-

4.7

-

tSU;DAT

tHD:DAT

tr

tf

tSU;STO

data setup time

data hold time

rise time

fall time

setup time for the STOP

condition

250

0

SDA and SCL signals

-

SDA and SCL signals

-

4.0

-

-

1000

300

-

tBUF

bus free time between a

STOP and START condition

4.7

-

Fast mode

Unit

Min

Max

0

400 kHz

0.6

- µs

1.3

- µs

0.6

- µs

0.6

- µs

100

0

20 + 0.1 Cb [1]

20 + 0.1 Cb [1]

0.6

- ns

0.9 µs

300 ns

300 ns

- µs

1.3

- µs

[1] Cb is the capacitive load for each bus line in pF. If mixed with high-speed mode devices, faster fall times are allowed.

9397 750 13355

Product data sheet

Rev. 01 — 14 July 2005

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

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