DS1251 Datasheet - Dallas Semiconducotr

DS1251 4096k NV SRAM with Phantom Clock

A0 *A18 CE OE WE P DS1251WP-XXXY (3.3V) - IND Industrial - 120 120ns access P blank 32-Pin DIP Module 34-Pin PowerCap Module board * VCC GND DQ0 *DQ7 NC X1, X2 VBAT RST - Address Inputs - Chip Enable - Output Enable - Write Enable - Power Supply Input - Ground - Data In/Data Out.

DS1251 Features

* PIN ASSIGNMENT Real-time clock keeps track of hundredths of A18/RST VCC 32 1 seconds, minutes, hours, days, date of the A16 31 A15 2 A14 A17 30 3 month, months, and years 29 4 WE A12 512k x 8 NV SRAM directly replaces A13 A7 28 5 volatile

DS1251_DallasSemiconducotr.pdf