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STM32F030x4 Folha de dados(PDF) 21 Page - STMicroelectronics

Nome de Peças STM32F030x4
Descrição Electrónicos  Value-line ARM-based 32-bit MCU with 16 to 64-KB Flash, timers, ADC, communication interfaces, 2.4-3.6 V operation
PDF  88 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F030x4 Folha de dados(HTML) 21 Page - STMicroelectronics

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STM32F030x4 STM32F030x6 STM32F030x8
Functional overview
22
3.13
Inter-integrated circuit interfaces (I2C)
Up to two I2C interfaces (I2C1 and I2C2) can operate in multimaster or slave modes. Both
can support Standard mode (up to 100 kbit/s) or Fast mode (up to 400 kbit/s). I2C1 also
supports Fast Mode Plus (up to 1 Mbit/s) with 20 mA output drive.
Both support 7-bit and 10-bit addressing modes, multiple 7-bit slave addresses (2
addresses, 1 with configurable mask). They also include programmable analog and digital
noise filters.
In addition, I2C1 provides hardware support for SMBUS 2.0 and PMBUS 1.1: ARP
capability, Host notify protocol, hardware CRC (PEC) generation/verification, timeouts
verifications and ALERT protocol management.
The I2C interfaces can be served by the DMA controller.
Refer to Table 7 for the differences between I2C1 and I2C2.
Table 6. Comparison of I2C analog and digital filters
Analog filter
Digital filter
Pulse width of
suppressed spikes
 50 ns
Programmable length from 1 to 15
I2C peripheral clocks
Benefits
Available in Stop mode
1. Extra filtering capability vs.
standard requirements.
2. Stable length
Drawbacks
Variations depending on
temperature, voltage, process
Wakeup from Stop on address
match is not available when digital
filter is enabled.
Table 7. STM32F030x I2C implementation
I2C features(1)
1. X = supported.
I2C1
I2C2
7-bit addressing mode
XX
10-bit addressing mode
XX
Standard mode (up to 100 kbit/s)
XX
Fast mode (up to 400 kbit/s)
XX
Fast Mode Plus with 20 mA output drive I/Os (up to 1 Mbit/s)
X-
SMBus
X-



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