STM32F413XG Datasheet, PDF (131/207 Pages) STMicroelectronics – ARM-Cortex-M4 32b MCU+FPU, 125 DMIPS, up to 1.5MB Flash, 320KB RAM, USB OTG FS, 1 ADC, 2 DACs, 2 DFSDMs

STM32F413xG/H
Electrical characteristics
Figure 38. I²C bus AC waveforms and measurement circuit
s_''B,& s_''B,&
,ð&EXV
5₃
5₃
670)[[
5₆
6'$
5₆
6&/
6'$
WI6'$
67$57
WU6'$
WVX6'$
WK67$
WZ6&/+
WK6'$
67$575(3($7('
WVX67$
67$57
6723
WZ67267$
6&/
WZ6&//
WU6&/
WI6&/
WVX672
DLF
1. R_S = series protection resistor.
2. R_P = external pull-up resistor.
3. V_{DD_I2C} is the I2C bus power supply.
Table 64. SCL frequency (f_PCLK1= 50 MHz, V_DD = V_{DD_I2C} = 3.3 V)⁽¹⁾⁽²⁾
f_SCL (kHz)
I2C_CCR value
R_P = 4.7 kΩ
400
0x8019
300
0x8021
200
0x8032
100
0x0096
50
0x012C
20
0x02EE
1. R_P = External pull-up resistance, f_SCL = I²C speed
2. For speeds around 200 kHz, the tolerance on the achieved speed is of ±5%. For other speed ranges, the
tolerance on the achieved speed is ±2%. These variations depend on the accuracy of the external
components used to design the application.
DocID029162 Rev 2
131/207
174