Àû²©¡¤(¼¯ÍÅ)ÓÐÏÞ¹«Ë¾¹ÙÍø

DESCRIPTION

The DS1202 Serial Timekeeping Chip contains a real time clock/calendar and 24 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real time clock/calendar provides seconds, minutes, hours, day, date, month, and year information.

FEATURES

? Real time clock counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap year compensation valid up to 2100

? 24 x 8 RAM for scratchpad data storage

? Serial I/O for minimum pin count

? 2.0¨C5.5 volt full operation

? Uses less than 300 nA at 2 volts

? Single¨Cbyte or multiple¨Cbyte (burst mode) data transfer for read or write of clock or RAM data

? 8¨Cpin DIP or optional 16¨Cpin SOIC for surface mount

? Simple 3¨Cwire interface

? TTL¨Ccompatible (VCC = 5V)

? Optional industrial temperature range ¨C40¡ãC to +85¡ãC (IND)