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SAFC161PI Datasheet(PDF) 30 Page - Infineon Technologies AG |
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SAFC161PI Datasheet(HTML) 30 Page - Infineon Technologies AG |
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30 / 400 page  &3, $UFKLWHFWXUDO2YHUYLHZ User’s Manual 2-14 1999-08 The On-chip I 2C Bus Module The integrated I 2C Module handles the transmission and reception of frames over the two-line I 2C bus in accordance with the I2C Bus specification. The on-chip I2C Module can receive and transmit data using 7-bit or 10-bit addressing and it can operate in slave mode, in master mode or in multi-master mode. Several physical interfaces (port pins) can be established under software control. Data can be transferred at speeds up to 400 Kbit/sec. Two interrupt nodes dedicated to the I 2C module allow efficient interrupt service and also support operation via PEC transfers. Note: The port pins associated with the I 2C interfaces feature open drain drivers only, as required by the I 2C specification. A/D Converter For analog signal measurement, an 8-bit A/D converter with 4 multiplexed input channels and a sample and hold circuit has been integrated on-chip. It uses the method of successive approximation. The sample time (for loading the capacitors) and the conversion time is programmable and can so be adjusted to the external circuitry. Overrun error detection is provided for the conversion result register (ADDAT): an interrupt request will be generated when the result of a previous conversion has not been read from the result register at the time the next conversion is complete. For applications which require less analog input channels, the remaining channel inputs can be used as digital input port pins. The A/D converter of the C161PI supports two different conversion modes. In the standard Single Channel conversion mode, the analog level on a specified channel is sampled once and converted to a digital result. In the Single Channel Continuous mode, the analog level on a specified channel is repeatedly sampled and converted without software intervention. The Peripheral Event Controller (PEC) may be used to automatically store the conversion results into a table in memory for later evaluation, without requiring the overhead of entering and exiting interrupt routines for each data transfer. |
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