RTC62421

Real time clock module 4-bit REAL TIME CLOCK MODULE RTC-62421/62423 Builtin crystal unit allows adjustment-free efficient operation. Low standby voltage and current consumption (1.8µA at 2V). Wide range of operating temperature (from -40˚C to +85˚C). 24H/12H changeable and leap year automatically adjustable (gregorian calendar). Similar mounting method (RTC-62423) to that used for universal type SMD IC. Pins and functions are compatible with the MSM6242 series. Actual size Specifications (characteristics) Absolute Max. rating Item Symbol Power source voltage VDD Input and output voltage VI/O Storage temperature TSTG Condition Ta=25˚C RTC-62421 RTC-62423 RTC-62421 Soldering condition TSOL RTC-62423 Specifications -0.3 to 7.0 -0.3 to VDD+0.3 -55 to +85 -55 to +125 Under 260˚C within 10 sec. (lead part) (package should be less than 150˚C) Twice at under 260˚C within 10 sec. or under 230˚C within 3 min. Terminal connection Unit V ˚C RTC-62421 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 RTC-62423 24 23 22 21 20 19 18 17 16 15 14 13 Operating range Item Operating voltage Operating temperature Data holding voltage CS1 data holding time Operation restoring time Symbol VDD TOPR VDH tCDR tR Refer to the data holding timing Condition Specifications 4.5 to 5.5 -40 to +85 2.0 to 5.5 2.0 min. Unit V ˚C V µs No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 62421 STD. P CS 0 ALE A0 A1 A2 A3 RD GND WR D3 D2 D1 D0 CS1 (VDD) (VDD) VDD 1 2 3 4 5 6 7 8 9 10 11 12 (...