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PM0222 Datasheet(PDF) 28 Page - STMicroelectronics |
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PM0222 Datasheet(HTML) 28 Page - STMicroelectronics |
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28 / 33 page  I2C PM0222 28/33 DocID025476 Rev 1 Figure 2. I2C2 double bonding Note: In serial mode 0, it is recommended to select the open-drain I/O configuration (I2C_CONFIG[0]) = ‘1’ and push-pull I/Os configuration (I2C_CONFIG[0] = ‘0’) for the other mode. 10.4.2 I2C1 The second bit of the I2C_CONF register (see Brain reference manual, GPIO chapter) is used to select between an open-drain and a push-pull I/O for the I2C1 SDA line. I2C_CONF[1] = ‘1’ selects the open-drain I/O while I2C_CONF[1] = ‘0’ selects the push-pull I/O. Once this configuration is selected, the serial mode 0 (see Section 5.1.1: I/O mode) has to be selected for IO2 and IO3 to access the I2C1. Figure 3. I2C1M double bonding Note: In serial mode 0, it is recommended to select the open-drain I/O configuration (I2C_CONFIG[1]) = ‘1’ and the push-pull I/Os configuration (I2C_CONFIG[1] = ‘0’) for the other mode. |
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