DS1644-120 - DS1644 256k Nonvolatile Timekeeping SRAM

Features

• Integrated SRAM, RTC, crystal, power-fail control circuit and lithium enery source
• Standard 32K x 8 static RAM pinout
• Clock registers are accessed identical to RAM
• 10 years of storage without power
• Crystal accuracy ±1 minute a month
• BCD coded year, month, date, day, hours, minutes and seconds