DS1258W Datasheet | Dallas Semiconducotr

.. .maxim-ic. DS1258W 3.3V 128k x 16 Nonvolatile SRAM PIN ASSIGNMENT CEU CEL DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 DQ9 DQ8 GND DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 OE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC WE A16 A15 A14 A13 A12 A11 A10 A9 GND A8 A7 A6 A5 A4 A3 A2 A1 A0 Features - - - - - - - - 10-Year Minimum Data Retention in the Absence of External Power Data is Automatically Protected During a Power Loss Separate Upper Byte and Lower Byte Chip Select Inputs Unlimited Write Cycles Low-Power CMOS Read and Write Access Times as Fast as 100ns Lithium Energy Source is Electrically Disconnected to Retain...