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DS12C887. from DALLAS,MAXIM - Dallas Semiconductor

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DS12C887.

Manufacturer: DALLAS

Real time clock

Partnumber Manufacturer Quantity Availability
DS12C887.,DS12C887 DALLAS 3545 In Stock

Description and Introduction

Real time clock The DS12C887 is a real-time clock (RTC) chip manufactured by Dallas Semiconductor (now part of Maxim Integrated). Below are its key specifications:

### **General Specifications:**
- **Manufacturer:** Dallas Semiconductor (now Maxim Integrated)
- **Type:** Real-Time Clock (RTC) with Non-Volatile Timekeeping RAM
- **Package:** 24-pin DIP (Dual In-line Package)

### **Features:**
- **Integrated Crystal:** Contains an embedded quartz crystal for timekeeping accuracy.
- **Battery Backup:** Includes an internal lithium battery to maintain timekeeping for over 10 years without external power.
- **Timekeeping Functions:** Tracks seconds, minutes, hours, day, date, month, and year with leap-year compensation (up to 2100).
- **Calendar:** Automatic adjustment for months with fewer than 31 days.
- **Alarms:** Two programmable time-of-day alarms.
- **Interrupts:** Supports square-wave output and interrupt generation.
- **Binary or BCD Format:** Time and calendar data can be read in binary or BCD format.
- **128 Bytes of RAM:** Non-volatile RAM for user data storage.
- **Three Software-Selectable Interrupts:** Periodic, alarm, and update-ended interrupts.

### **Electrical Specifications:**
- **Supply Voltage:** 4.5V to 5.5V (operating), 2V to 5.5V (battery backup mode).
- **Low Power Consumption:** Typically 1mA in active mode, <1µA in battery backup mode.
- **Interface:** Parallel (8-bit data bus) with standard microprocessor interface.

### **Environmental Specifications:**
- **Operating Temperature Range:** 0°C to +70°C (commercial), -40°C to +85°C (industrial).

### **Applications:**
- Embedded systems
- Industrial controllers
- Point-of-sale terminals
- Medical equipment
- Consumer electronics

This information is based solely on the manufacturer's datasheet and specifications.

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