(China (Mainland))
Product Summary
The RTC-72421B is a 4-bit real time clock module.
Parametrics
RTC-72421B absolute maxing ratings: (1)On the conditions of Ta=+25℃, Power source voltage VDD: -0.3 to 7.0V; (2)On the conditions of Ta=+25℃, Input and output voltage VI/O: GND -0.3 to VDD+0.3V; (3)Storage temperature TSTG: -55 to +85℃; (4)Soldering condition TSOL: Under +260℃ within 10s(lead part)(package should be less than +150℃).
Features
RTC-72421B features: (1)Built-in crystal unit allows adjustment-free efficient operation; (2)ALE input terminal available for 8048, 8051, and 8085 series; (3)12/24 h clock switchover function and automatic leap year setting; (4)Interrupt masking; (5)30 second adjustment function; (6)Low current consumption and features a backup function.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
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 RTC-72421B |
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IC REAL TIME CLOCK 18-DIP |
Data Sheet |
Negotiable |
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RTC-72421B:ROHS |
Epson Toyocom |
Real Time Clock 4-Bit 12/24 Hr 50ppm 18 pin |
Data Sheet |
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