STM32F100RC Datasheet, PDF (76/98 Pages) STMicroelectronics – High-density value line, advanced ARM-based 32-bit MCU

Electrical characteristics
STM32F100xC, STM32F100xD, STM32F100xE
Table 48. I²C characteristics
Symbol
Parameter
Standard mode I²C⁽¹⁾ Fast mode I²C⁽¹⁾⁽²⁾
Unit
Min
Max
Min
Max
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
1.3
µs
4.0
0.6
250
100
0
0
900⁽³⁾
1000
300 ^ns
300
300
4.0
0.6
µs
4.7
0.6
t_su(STO) Stop condition setup time
4.0
t_w(STO:STA)
Stop to Start condition time (bus
free)
4.7
0.6
µs
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 standard mode I²C frequencies. It
mode I²C frequencies. It must be a multiple of 10 MHz to reach
must be
the 400
at least 4 MHz
kHz maximum
to
I2C
fast mode clock.
3. The maximum Data hold time has only to be met if the interface does not stretch the low period of SCL
signal.
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Doc ID 15081 Rev 7