DS1254 - Dallas Semiconducotr

DS1254 2M x 8 NV SRAM with Phantom Clock

VCC A0–A20 DQ0–DQ7 CE OE WE BW GND - Supply Voltage - Address Inputs - Data I/O - Chip-Enable Input - Output-Enable Input - Write-Enable Input - Battery Warning Output (Open Drain) - Ground DataSheet4U.com Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be.

Features

§ Real-time clock (RTC) keeps track of hundredths of seconds, seconds, minutes, hours, days, date, months, and years with automatic leap-year compensation valid up to the year 2100 2M x 8 NV SRAM Watch function is transparent to RAM operation Automatic data protection during power loss Unlimited write-cycle endurance Surface-mountable BGA module construction Over 10 years of data retention in the absence of power Battery monitor checks remaining capacity daily +3.3V or +5V operation PACKAGE OUTLINE § § § § § § § § Side -A- Shown (For Reference Only, Not to Scale) Component placement may var.