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X28HC64PM-70 Datasheet(PDF) 2 Page - Xicor Inc. |
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X28HC64PM-70 Datasheet(HTML) 2 Page - Xicor Inc. |
2 / 24 page 2 X28HC64 PIN DESCRIPTIONS Addresses (A0–A12) The Address inputs select an 8-bit memory location during a read or write operation. Chip Enable ( CE) The Chip Enable input must be LOW to enable all read/ write operations. When CE is HIGH, power consumption is reduced. Output Enable ( OE) The Output Enable input controls the data output buffers and is used to initiate read operations. Data In/Data Out (I/O0–I/O7) Data is written to or read from the X28HC64 through the I/O pins. Write Enable ( WE) The Write Enable input controls the writing of data to the X28HC64. PIN NAMES Symbol Description A0–A12 Address Inputs I/O0–I/O7 Data Input/Output WE Write Enable CE Chip Enable OE Output Enable VCC +5V VSS Ground NC No Connect 3857 PGM T01 3857 FHD F01 X BUFFERS LATCHES AND DECODER I/O BUFFERS AND LATCHES Y BUFFERS LATCHES AND DECODER CONTROL LOGIC AND TIMING 65,536-BIT E2PROM ARRAY I/O0–I/O7 DATA INPUTS/OUTPUTS CE OE VCC VSS A0–A12 ADDRESS INPUTS WE FUNCTIONAL DIAGRAM |
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