CS8420 datasheet(9/80 Pages) CIRRUS

9 / 80 page

CS8420

DS245PP2

SWITCHING CHARACTERISTICS - CONTROL PORT - I2C® MODE (Note 12, T

A =

25 °C; VA+ = VD+ = 5V ±5%, Inputs: Logic 0 = 0V, Logic 1 = VD+; CL = 20 pF)

Notes: 12. I2C is a registered trademark of Philips Semiconductors.

13. Data must be held for sufficient time to bridge the 300ns transition time of SCL.

Specifications are subject to change without notice

Parameter

Symbol

Min

Typ

Max

Units

SCL Clock Frequency

fscl

100

kHz

Bus Free Time Between Transmissions

tbuf

4.7

µs

Start Condition Hold Time (prior to first clock pulse)

thdst

4.0

µs

Clock Low Time

tlow

4.7

µs

Clock High Time

thigh

4.0

µs

Setup Time for Repeated Start Condition

tsust

4.7

µs

SDA Hold Time from SCL Falling

(Note 13)

thdd

µs

SDA Setup Time to SCL Rising

tsud

250

Rise Time of Both SDA and SCL Lines

µs

Fall Time of Both SDA and SCL Lines

300

Setup Time for Stop Condition

tsusp

4.7

µs

buf

hdst

low

t r

t f

hdd

high

t sud

t sust

t susp

Stop

Start

Stop

Repeated

SDA

SCL

Figure 4. I2C Mode Timing

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