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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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HD64F2149YV 数据表(PDF) 522 Page - Renesas Technology Corp |
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HD64F2149YV 数据表(HTML) 522 Page - Renesas Technology Corp |
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522 / 1075 page  Section 16 I 2C Bus Interface Rev. 3.00 Jan 18, 2006 page 494 of 1044 REJ09B0280-0300 • Direct bus drive (with SCL and SDA pins) Two pins—P52/SCL0 and P97/SDA0—(normally NMOS push-pull outputs) function as NMOS open-drain outputs when the bus drive function is selected. Two pins—P86/SCL1 and P42/SDA1—(normally CMOS pins) function as NMOS-only outputs when the bus drive function is selected. • Automatic switching from formatless mode to I2C bus format (channel 0 only) Formatless operation (no start/stop conditions, non-addressing mode) in slave mode Operation using a common data pin (SDA) and independent clock pins (VSYNCI, SCL) Automatic switching from formatless mode to I2C bus format on the fall of the SCL pin 16.1.2 Block Diagram Figure 16.1 shows a block diagram of the I 2C bus interface. Figure 16.2 shows an example of I/O pin connections to external circuits. Channel 0 I/O pins and channel 1 I/O pins differ in structure, and have different specifications for permissible applied voltages. For details, see section 25, Electrical Characteristics. |
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