Perel Module ds1302 temps réel / avec pile cr2032 (2 pcs)

manages all timekeeping functions: real-time clock counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap year 31 x 8 battery-backed general-purpose RAM simple serial port interfaces to most microcontrollers: simple 3-wire interface TTL compatible: VCC = 5 V single-byte or multiple-byte (burst mode) data transfer for read or write of clock or RAM data low power operation extends battery backup run time: 2.0 V to 5.5 V full operation uses less than 300 nA at 2.0 V temperature range: 0°C to +70°C