M440T513Y

The M440T513Y TIMEKEEPER® RAM is a 16Mbit, non-volatile static RAM organized as 512K by 32 bits and real time clock organized as 64 bytes by 8 bits. The special PBGA package provides a fully integrated battery back-up memo- ry and real time clock solution. In the event of pow-er instability or absence, a self-contained battery maintains the timekeeping operation and provides power for a CMOS static RAM. Control circuitry monitors VCC and invokes write protection to pre-vent data corruption in the memory and RTC.

The clock keeps track of tenths/hundredths of sec-onds, seconds, minutes, hours, day, date, month,and year information. The last day of the month is automatically adjusted for months with less than 31 days, including leap year correction.

The clock operates in one of two formats:
a 12-hour mode with an AM/PM indicator; or
a 24-hour mode

The M440T513Y is a 168-ball PBGA module that integrates the RTC, the battery, and SRAM in one package.