5
FN6330.2
September 4, 2009
SERIAL INTERFACE SPECS
V
IL
A2, A1, A0, SDA, and SCL Input
Buffer Low Voltage
-0.3 0.3*V
CC
V
V
IH
A2, A1, A0, SDA, and SCL Input
Buffer High Voltage
0.7*V
CC
V
CC
+
0.3
V
Hysteresis
SDA and SCL Input Buffer Hysteresis 0.05*
V
CC
V
V
OL
SDA Output Buffer LOW Voltage,
Sinking 4mA
00.4V
Cpin
(Note 10)
A2, A1, A0, SDA, and SCL Pin
Capacitance
10 pF
f
SCL
SCL Frequency 400 kHz
t
sp
Pulse Width Suppression Time at
SDA and SCL Inputs
Any pulse narrower than the max spec is
suppressed
50 ns
t
AA
SCL Falling Edge to SDA Output Data
Valid
SCL falling edge crossing 30% of V
CC
, until
SDA exits the 30% to 70% of V
CC
window
900 ns
t
BUF
Time the Bus Must be Free Before the
Start of a New Transmission
SDA crossing 70% of V
CC
during a STOP
condition, to SDA crossing 70% of V
CC
during the following START condition
1300 ns
t
LOW
Clock LOW Time Measured at the 30% of V
CC
crossing 1300 ns
t
HIGH
Clock HIGH Time Measured at the 70% of V
CC
crossing 600 ns
t
SU:STA
START Condition Setup Time SCL rising edge to SDA falling edge; both
crossing 70% of V
CC
600 ns
t
HD:STA
START Condition Hold Time From SDA falling edge crossing 30% of V
CC
to SCL falling edge crossing 70% of V
CC
600 ns
t
SU:DAT
Input Data Setup Time From SDA exiting the 30% to 70% of V
CC
window, to SCL rising edge crossing 30% of
V
CC
100 ns
t
HD:DAT
Input Data Hold Time From SCL rising edge crossing 70% of V
CC
to SDA entering the 30% to 70% of V
CC
window
0ns
t
SU:STO
STOP Condition Setup Time From SCL rising edge crossing 70% of V
CC
,
to SDA rising edge crossing 30% of V
CC
600 ns
t
HD:STO
STOP Condition Hold Time for Read,
or Volatile Only Write
From SDA rising edge to SCL falling edge;
both crossing 70% of V
CC
1300 ns
t
DH
Output Data Hold Time From SCL falling edge crossing 30% of V
CC
,
until SDA enters the 30% to 70% of V
CC
window
0ns
t
R
SDA and SCL Rise Time From 30% to 70% of V
CC
20 +
0.1*Cb
250 ns
t
F
SDA and SCL Fall Time From 70% to 30% of V
CC
20 +
0.1*Cb
250 ns
Cb Capacitive Loading of SDA or SCL Total on-chip and off-chip 10 400 pF
Rpu
SDA and SCL Bus Pull-up Resistor
Off-chip
Maximum is determined by t
R
and t
F
For Cb = 400pF, max is about 2kΩ~2.5kΩ
For Cb = 40pF, max is about 15kΩ~20kΩ
1kΩ
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
SYMBOL PARAMETER TEST CONDITIONS
MIN
(Note 13)
TYP
(Note 3)
MAX
(Note 13) UNIT
ISL22329
