STM32F303VE datasheet(134/184 Pages) STMICROELECTRONICS

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Electrical characteristics

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DocID026415 Rev 4

6.3.18

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 kbit/s

•

Fast-mode (Fm): with a bit rate up to 400 kbit/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 6.3.15: I/O port

characteristics.

All I2C I/Os embed an analog filter. refer to theTable 72: I2C analog filter characteristics.

Table 72. I2C analog filter characteristics(1)

1. Guaranteed by design, not tested in production.

Symbol

Parameter

Min

Max

Unit

tAF

Pulse width of spikes that are

suppressed by the analog filter

260

STM32F303VE Datasheet(PDF) 134 Page - STMicroelectronics