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STM32F407IGH6 Datasheet(PDF) 117 Page - STMicroelectronics

Part # STM32F407IGH6
Description  ARM Cortex-M4 32b MCUFPU, 210DMIPS, up to 1MB Flash/1924KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera
PDF  185 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F407IGH6 Datasheet(HTML) 117 Page - STMicroelectronics

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STM32F405xx, STM32F407xx
Electrical characteristics
Figure 39. I2C bus AC waveforms and measurement circuit
1. Rs= series protection resistor.
2. Rp = external pull-up resistor.
3. VDD_I2C is the I2C bus power supply.
th(STA)
Start condition hold time
4.0
-
0.6
-
µs
tsu(STA)
Repeated Start condition
setup time
4.7
-
0.6
-
tsu(STO)
Stop condition setup time
4.0
-
0.6
-
μs
tw(STO:STA)
Stop to Start condition time
(bus free)
4.7
-
1.3
-
μs
Cb
Capacitive load for each bus
line
-
400
-
400
pF
1. Guaranteed by design, not tested in production.
2. fPCLK1 must be at least 2 MHz to achieve standard mode I2C frequencies. It must be at least 4 MHz to
achieve fast mode I2C frequencies, and a multiple of 10 MHz to reach the 400 kHz maximum I2C fast mode
clock.
3. 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.
4. The maximum data hold time has only to be met if the interface does not stretch the low period of SCL
signal.
Table 53. I2C characteristics (continued)
Symbol
Parameter
Standard mode I2C(1)
Fast mode I2C(1)(2)
Unit
Min
Max
Min
Max
ai14979c
ST AR T
SD A
RP
I²C bus
V DD_I2C
STM32Fxx
SDA
SCL
tf(SDA)
tr(SDA)
SCL
th(STA)
tw(SCLH)
tw(SCLL)
tsu(SDA)
tr(SCL)
tf(SCL)
th(SDA)
S T AR T REPEATED
ST AR T
tsu(STA)
tsu(STO)
STOP
tw(STO:STA)
V DD_I2C
RP
RS
RS



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