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X24325VI-2.7 Datasheet(PDF) 2 Page - Xicor Inc. |
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X24325VI-2.7 Datasheet(HTML) 2 Page - Xicor Inc. |
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2 / 17 page  X24325 2 PIN DESCRIPTIONS Serial Clock (SCL) The SCL input is used to clock all data into and out of the device. Serial Data (SDA) SDA is a bidirectional pin used to transfer data into and out of the device. It is an open drain output and may be wire-ORed with any number of open drain or open collector outputs. An open drain output requires the use of a pull-up resistor. For selecting typical values, refer to the Pull- Up Resistor selection graph at the end of this data sheet. Device Select (S0, S1, S2) The device select inputs (S0, S1, S2) are used to set the first three bits of the 8-bit slave address. This allows up to eight X24325’s to share a common bus. These inputs can be static or actively driven. If used statically they must be tied to VSS or VCC as appro- priate. If actively driven, they must be driven with CMOS levels (driven to VCC or VSS). Write Protect (WP) The write protect input controls the hardware write protect feature. When held LOW, hardware write protection is disabled and the X24325 can be written normally. When this input is held HIGH, and the WPEN bit in the write protect register is set HIGH, write protection is enabled, and nonvolatile writes are disabled to the selected blocks as well as the write protect register itself. PIN NAMES 6552 FRM T01.1 Symbol Description S0, S1, S2 Device Select Inputs SDA Serial Data SCL Serial Clock WP Write Protect VSS Ground VCC Supply Voltage NC No Connect PIN CONFIGURATIONS 6552 ILL F02.5 S0 S1 NC NC NC S2 VSS 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC WP NC NC NC SCL SDA X24325 14-LEAD TSSOP VCC WP SCL SDA S0 S1 S2 VSS 1 2 3 4 8 7 6 5 X24325 8-LEAD DIP & SOIC |
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