Description
AD0-AD7 NC MOT
CS
AS R/ W DS
RESET
IRQ
SQW VCC
RCLR
GND
- Multiplexed Address/Data Bus - No Connection - Bus Type Selection - Chip Select - Address Strobe - Read/Write Input - Data Strobe - Reset Input - Interrupt Request Output - Square Wave Output - +5 Volt Supply - RAM Clear - Ground
DESCRIP
Features
- Drop.
- in replacement for IBM AT computer clock/calendar.
- Pin compatible with the MC146818B and DS1287A.
- Totally nonvolatile with over 10 years of operation in the absence of power.
- Self.
- contained subsystem includes lithium, quartz, and support circuitry.
- Counts seconds, minutes, hours, days, day of the week, date, month, and year with leap year compensation valid up to 2100.
- Binary or BCD representation of time, calendar, and alarm.
- 12.
DS12887A Datasheet
