5
FN6755.2
September 25, 2015
t
AA
SCL Falling Edge to SDA Output
Data Valid
SCL falling edge crossing 30% of V
DD
,
until SDA exits the 30% to 70% of V
DD
window.
900 ns 10
t
BUF
Time the Bus Must Be Free
Before the Start of a New
Transmission
SDA crossing 70% of V
DD
during a
STOP condition, to SDA crossing 70%
of V
DD
during the following START
condition
1300 ns
t
LOW
Clock LOW Time Measured at the 30% of V
DD
crossing 1300 ns
t
HIGH
Clock HIGH Time Measured at the 70% of V
DD
crossing 600 ns
t
SU:STA
START Condition Setup Time SCL rising edge to SDA falling edge.
Both crossing 70% of V
DD
600 ns
t
HD:STA
START Condition Hold Time From SDA falling edge crossing 30% of
V
DD
to SCL falling edge crossing 70%
of V
DD
600 ns
t
SU:DAT
Input Data Setup Time From SDA exiting the 30% to 70% of
V
DD
window, to SCL rising edge
crossing 30% of V
DD
100 ns
t
HD:DAT
Input Data Hold Time From SCL falling edge crossing 30% of
V
DD
to SDA entering the 30% to 70%
of V
DD
window
0 900 ns
t
SU:STO
STOP Condition Setup Time From SCL rising edge crossing 70% of
V
DD
, to SDA rising edge crossing 30%
of V
DD
600 ns
t
HD:STO
STOP Condition Hold Time From SDA rising edge to SCL falling
edge. Both crossing 70% of V
DD
600 ns
t
DH
Output Data Hold Time From SCL falling edge crossing 30% of
V
DD
, until SDA enters the 30% to 70%
of V
DD
window
0 ns
t
R
SDA and SCL Rise Time From 30% to 70% of V
DD
20 + 0.1 x Cb 300 ns 9
t
F
SDA and SCL Fall Time From 70% to 30% of V
DD
20 + 0.1 x Cb 300 ns 9, 10
Cb Capacitive Loading of SDA or SCL Total on-chip and off-chip 10 400 pF 9
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
2k to~2.5k.
For Cb = 40pF, max is about 15kto
~20k
1 k 9
NOTES:
6. IRQ1
/F
OUT
inactive.
7. Typical values are for T = +25°C and 3.3V supply voltage.
8. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
9. These are I
2
C specific parameters and are not production tested; however, they are used to set conditions for testing devices to validate
specification.
10. Parts will work with SDA pull-up voltage above the V
PULLUP
limit but the t
AA
and t
F
in the I
2
C parameters are not guaranteed.
11. Specified at +25°C.
Serial Interface Specifications Over the recommended operating conditions unless otherwise specified. Boldface limits apply over
the operating temperature range, -40°C to +85°C. (Continued)
SYMBOL PARAMETER TEST CONDITIONS
MIN
(Note 8)
TYP
(Note 7)
MAX
(Note 8) UNITS NOTES
ISL12057
