Harman Kardon DVD 27 Service Manual

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Contents

Harman Kardon DVD 27 Service Manual Manual pdf 74 page image

5092B–SEEPR–9/05Figure 1. Block DiagramPin Description SERIAL CLOCK (SCL): The SCL input is used to positive edge clock data into eachEEPROM device and negative edge clock data out of each device.SERIAL DATA (SDA): The SDA pin is bi-directional for serial data transfer. This pin isopen-drain driven and may be wire-ORed with any number of other open-drain or open-collector devices.DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2, A1 and A0 pins are deviceaddress inputs that are hard wired for the AT24C01A and the AT24C02. As many aseight 1K/2K devices may be addressed on a single bus system (device addressing isdiscussed in detail under the Device Addressing section).The AT24C04 uses the A2 and A1 inputs for hard wire addressing and a total of four 4Kdevices may be addressed on a single bus system. The A0 pin is a no connect.Absolute Maximum RatingsOperating Temperature......................................−55°C to +125°C *NOTICE: Stresses beyond those listed under “AbsoluteMaximum Ratings” may cause permanent dam-age to the device. This is a stress rating only andfunctional operation of the device at these or anyother conditions beyond those indicated in theoperational sections of this specification is notimplied. Exposure to absolute maximum ratingconditions for extended periods may affect devicereliability.Storage Temperature .........................................−65°C to +150°CVoltage on Any Pinwith Respect to Ground ........................................ −1.0V to +7.0VMaximum Operating Voltage .......................................... 6.25VDC Output Current........................................................ 5.0 mADVD27 harman/kardon74