CS4228
SWITCHING CHARACTERISTICS - CONTROL PORT (TA = 25°C; VD = VL = +3.3V,
VA = +5V; Inputs: logic 0 = DGND, logic 1 = VL, CL = 30 pF)
Parameter
Symbol
Min
Max
Units
I2C® Mode (SDOUT < 47kΩ to ground)
(Note 11)
fscl
tbuf
thdst
tlow
thigh
tsust
thdd
tsud
tr
-
100
kHz
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
SCL Clock Frequency
4.7
4.0
4.7
4.0
4.7
0
Bus Free Time Between Transmissions
Start Condition Hold Time (prior to first clock pulse)
Clock Low Time
Clock High Time
Setup Time for Repeated Start Condition
SDA Hold Time from SCL Falling
SDA Setup Time to SCL Rising
Rise Time of Both SDA and SCL Lines
Fall Time of Both SDA and SCL Lines
Setup Time for Stop Condition
(Note 12)
250
1
tf
300
tsusp
4.7
Notes: 11. Use of the I2C bus interface requires a license from Philips. I2C is a registered trademark of Philips
Semiconductors.
12. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
Repeated
Stop
t
Start
Stop
Start
SDA
SCL
t
t
t
t
buf
t
high
hdst
f
susp
hdst
t
t
t
t
t
sust
sud
r
low
hdd
Figure 4. I2C Control Port Timing
DS307PP1
9
CIRRUS [ CIRRUS LOGIC ]
