TIGER ELECTRONIC CO.
,LTD Trickle Charge Timekeeping Chip 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 31 x 8 RAM for scratchpad data storage Serial I/O for minimum pin count 2.
0–5.
5V full operation Uses less than 300 nA at 2.
0V Single–byte or multiple–byte (burst mode) data transfer for read or write of clock or RAM data 8–pin DIP or optional 8–pin SOICs for surface mount Simple 3–wire interface TTL–compatible (VCC = 5V) Optional industrial temperature range –40°C to +85°C DS1202 compatible Recognized by Underwriters Laboratory DS1302 PIN ASSIGNMENT VCC2 X1 X2 GND 1 2 3 4 8 7 6 5 VCC...

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