(Hong Kong)
Product Summary
The DS1302 Trickle Charge Timekeeping Chip contains a real time clock/calendar and 31 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. The end of the month date is automatically adjusted for months with less than 31 days, including corrections for leap year. The clock operates in either the 24–hour or 12–hour format with an AM/PM indicator.
Parametrics
DS1302 absolute maximum ratings:(1)Voltage on Any Pin Relative to Ground:–0.5V to +7.0V; (2)Operating Temperature :0°C to 70°C; (3)Storage Temperature :–55°C to +125°C; (4)Soldering Temperature :260°C for 10 seconds.
Features
DS1302 features:(1)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; (2)31 x 8 RAM for scratchpad data storage; (3) Serial I/O for minimum pin count; (4) 2.0–5.5 volt full operation; (5)Uses less than 300 nA at 2.0 volts; (6)Single–byte or multiple–byte (burst mode)data transfer for read or write of clock or RAM data; (7)8–pin DIP or optional 8–pin SOICs for surface mount; (8) Simple 3–wire interface; (9) TTL–compatible (VCC = 5V); (10) Optional industrial temperature range –40°C to +85°C; (11)DS1202 compatible; (12)Added features over DS1202:Optional trickle charge capability to VCC1; Dual power supply pins for primary and backup power supplies;Backup power supply pin can be used for battery or super cap input; Additional scratchpad memory (7 bytes).
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
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 DS1302 |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302+ |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302N |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302N+ |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302S |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302S/T&R |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302S+ |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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DS1302S+T&R |
Maxim Integrated Products |
Real Time Clock Trickle-Charge Timekeeping Chip |
Data Sheet |
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