Datasheet

Electrical characteristics STM8S001J3
68/84 DocID030584 Rev 2
9.3.8 I2C interface characteristics
Table 40. I2C characteristics
Symbol Parameter
Standard mode I2C
Fast mode
I2C
(1)
1. f
MASTER
, must be at least 8 MHz to achieve max fast I2C speed (400 kHz)
Unit
Min
(2)
2.
Data based on standard I2C protocol requirement, not tested in production
Max
(2)
Min
(2)
Max
(2)
t
w(SCLL)
SCL clock low time 4.7 - 1.3 -
µs
t
w(SCLH)
SCL clock high time 4.0 - 0.6 -
t
su(SDA)
SDA setup time 250 - 100 -
ns
t
h(SDA)
SDA data hold time 0
(3)
3.
The maximum hold time of the start condition has only to be met if the interface does not stretch the low
time
-0
(4)
4.
The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge the
undefined region of the falling edge of SCL
900
(3)
t
r(SDA)
t
r(SCL)
SDA and SCL rise time - 1000 - 300
t
f(SDA)
t
f(SCL)
SDA and SCL fall time - 300 - 300
t
h(STA)
START condition hold time 4.0 - 0.6 -
µs
t
su(STA)
Repeated START condition setup time 4.7 - 0.6 -
t
su(STO)
STOP condition setup time 4.0 - 0.6 - µs
t
w(STO:STA)
STOP to START condition time
(bus free)
4.7 - 1.3 - µs
C
b
Capacitive load for each bus line - 400 - 400 pF
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