CD00237391 Datasheet, PDF (103/177 Pages) STMicroelectronics – ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM

STM32F20xxx
Electrical characteristics
Table 50. I²C characteristics
Symbol
Parameter
Standard mode I²C⁽¹⁾ Fast mode I²C⁽¹⁾⁽²⁾
Min
Max
Min
Max
Unit
t_w(SCLL)
t_w(SCLH)
t_su(SDA)
t_h(SDA)
t_r(SDA)
t_r(SCL)
t_f(SDA)
t_f(SCL)
t_h(STA)
t_su(STA)
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
SDA and SCL rise time
SDA and SCL fall time
Start condition hold time
Repeated Start condition
setup time
4.7
-
4.0
-
250
-
0
-
1.3
-
µs
0.6
-
100
-
0
900⁽³⁾
-
1000 20 + 0.1C_b 300
ns
-
300
-
300
4.0
-
0.6
-
µs
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
1. Guaranteed by design, not tested in production.
2.
f_PCLK1 must
achieve fast
be at least 2 MHz to achieve
mode I²C frequencies, and a
standard mode I²C frequencies. It must
multiple of 10 MHz to reach the 400 kHz
be at least 4 MHz
maximum I²C fast
to
mode
clock.
3. The maximum Data hold time has only to be met if the interface does not stretch the low period of the SCL
signal.
Doc ID 15818 Rev 9
103/177