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DS1287

Real Time Clock

Partnumber Manufacturer Quantity Availability
DS1287 1124 In Stock

Description and Introduction

Real Time Clock The DS1287 is a real-time clock (RTC) chip manufactured by Dallas Semiconductor (now part of Maxim Integrated). Below are its key specifications:

1. **Functionality**: Combines a real-time clock, calendar, alarm, and non-volatile RAM.
2. **Timekeeping**: Tracks seconds, minutes, hours, day, date, month, and year with leap-year compensation (valid up to 2100).
3. **Clock Format**: Supports 12-hour or 24-hour format with AM/PM indicator.
4. **Memory**: Includes 114 bytes of general-purpose non-volatile RAM.
5. **Power Supply**: Operates from a +5V supply. Includes an integrated lithium battery and power-fail detection circuitry for backup operation.
6. **Interface**: Parallel interface compatible with most microprocessors.
7. **Interrupts**: Provides programmable interrupts (alarm, periodic, or update-ended).
8. **Accuracy**: Timekeeping accuracy depends on the external 32.768 kHz crystal oscillator.
9. **Package**: Available in a 24-pin DIP (Dual In-line Package).
10. **Operating Temperature Range**: 0°C to +70°C (commercial grade).

For detailed electrical characteristics or timing diagrams, refer to the official datasheet.

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