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R1EX24008ATA00I Datasheet(PDF) 7 Page - Renesas Technology Corp |
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R1EX24008ATA00I Datasheet(HTML) 7 Page - Renesas Technology Corp |
7 / 22 page R1EX24008Axx00I Pin Function Serial Clock (SCL) The SCL pin is used to control serial input/output data timing. The SCL input is used to positive edge clock data into EEPROM device and negative edge clock data out of each device. Maximum clock rate is 400 kHz. Serial Input/Output Data (SDA) The SDA pin is bidirectional for serial data transfer. The SDA pin needs to be pulled up by resistor as that pin is open-drain driven structure. Use proper resistor value for your system by considering V OL, IOL and the SDA pin capacitance. Except for a start condition and a stop condition which will be discussed later, the SDA transition needs to be completed during the SCL low period. Data Validity (SDA data change timing waveform) SCL SDA Data change Data change Note: High-to-low and low-to-high change of SDA should be done during the SCL low period. REJ03C0363-0001 Rev.0.01 Dec. 28, 2007 Page 7 of 20 |
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