STM32F302VCY7 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STM32F302VCY7
STMicroelectronics
STM32F302VCY7 Datasheet PDF : 144 Pages
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STM32F302xB STM32F302xC
Electrical characteristics
6.3.17
Communications interfaces
I2C interface characteristics
The I2C interface meets the timings requirements of the I2C-bus specification and user
manual rev.03 for:
• Standard-mode (Sm) : with a bit rate up to 100 Kbits/s
• Fast-mode (Fm) : with a bit rate up to 400 Kbits/s
• Fast-mode Plus (Fm+) : with a bit rate up to 1Mbits/s
The I2C timings requirements are guaranteed by design when the I2C peripheral is properly
configured (refer to Reference manual).
The SDA and SCL I/O requirements are met with the following restrictions: the SDA and
SCL I/O pins are “true” open-drain. When configured as open-drain, the PMOS connected
between the I/O pin and VDDIOx is disabled, but is still present. Only FTf I/O pins support
Fm+ low level output current maximum requirement. Refer to Section 6.3.14: I/O port
characteristics.
All I2C I/Os embed an analog filter. refer to theTable 62: I2C analog filter characteristics.
Table 61. I2C timings specification (see I2C specification, rev.03, June 2007)(1)
Symbol
Parameter
Standard mode
Min Max
Fast mode Fast Mode Plus
Unit
Min Max Min Max
fSCL
tLOW
tHIGH
tr
tf
tHD;DAT
tVD;DAT
tVD;ACK
tSU;DAT
tHD:STA
tSU:STA
tSU:STO
tBUF
Cb
tSP
SCL clock frequency
Low period of the SCL clock
High Period of the SCL clock
Rise time of both SDA and SCL
signals
Fall time of both SDA and SCL
signals
Data hold time
Data valid time
Data valid acknowledge time
Data setup time
Hold time (repeated) START
condition
Set-up time for a repeated START
condition
Set-up time for STOP condition
Bus free time between a
STOP and START condition
Capacitive load for each bus line
Pulse width of spikes that are
suppressed by the analog filter for
Standard and Fast mode
0
100
4.7
-
4
0
400
0
1000 KHz
1.3
-
0.5
-
µs
0.6
0.26
-
µs
-
1000
-
300
-
120 ns
-
300
-
300
-
120 ns
0
-
0
-
0
-
µs
-
3.45(2)
-
0.9(2)
-
0.45(2) µs
-
3.45(2)
-
0.9(2)
-
0.45(2) µs
250
-
100
-
50
-
ns
4.0
-
0.6
-
0.26
-
µs
4.7
-
4.0
-
4.7
-
-
400
0
50(3)
0.6
-
0.26
µs
0.6
-
0.26
-
µs
1.3
-
0.5
-
µs
-
400
-
550 pF
0
50(3)
-
-
ns
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