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ADI DS12C887+
Real-Time Clocks
Brands: Analog Devices
Mfr.Part #: DS12C887+
Datasheet: DS12C887+ Datasheet (PDF)
Package/Case: EDIP-24
Product Type: Clock & Timer ICs
RoHS Status:
Stock Condition: 2925 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomDS12C887+ General Description
The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 114 bytes of battery-backed static RAM (113 bytes in the DS12C887 and DS12C887A). The DS12887 integrates a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The DS12C887 adds a century byte at address 32h. For all devices, the date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years. The devices also operate in either 24-hour or 12-hour format with an AM/PM indicator. A precision temperature-compensated circuit monitors the status of VCC. If a primary power failure is detected, the device automatically switches to a backup supply. A lithium coin-cell battery can be connected to the VBAT input pin on the DS12885 to maintain time and date operation when primary power is absent. The device is accessed through a multiplexed byte-wide interface, which supports both Intel and Motorola modes.
Features
- Drop-In Replacement for IBM AT Computer Clock/Calendar
- RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099
- Binary or BCD Time Representation
- 12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode
- Daylight Saving Time Option
- Selectable Intel or Motorola Bus Timing
- Interfaced with Software as 128 RAM Locations
- 14 Bytes of Clock and Control Registers
- 114 Bytes of General-Purpose, Battery-Backed RAM (113 Bytes in the DS12C887 and DS12C887A)
- RAM Clear Function (DS12885, DS12887A, and DS12C887A)
- Interrupt Output with Three Independently Maskable Interrupt Flags
- Time-of-Day Alarm Once Per Second to Once Per Day
- Periodic Rates from 122µs to 500ms
- End-of-Clock Update Cycle Flag
- Programmable Square-Wave Output
- Automatic Power-Fail Detect and Switch Circuitry
- Optional 28-Pin PLCC Surface Mount Package or 32-Pin TQFP (DS12885)
- Optional Encapsulated DIP (EDIP) Package with Integrated Crystal and Battery (DS12887, DS12887A, DS12C887, DS12C887A)
- Optional Industrial Temperature Range Available
Application
- Embedded Systems
- Network Hubs, Bridges, and Routers
- Security Systems
- Utility Meters
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product Category | Real Time Clock | RoHS | Details |
| Mounting Style | Through Hole | Package / Case | EDIP-24 |
| RTC Bus Interface | Multiplexed | Date Format | YY-MM-DD-dd |
| Time Format | HH:MM:SS (12 hr, 24 hr) | Battery Backup Switching | Integrated Battery |
| RTC Memory Size | 113 B | Supply Voltage - Max | 5.5 V |
| Supply Voltage - Min | 4.5 V | Minimum Operating Temperature | 0 C |
| Maximum Operating Temperature | + 70 C | Brand | Analog Devices / Maxim Integrated |
| Function | Alarm, Calendar, Clock | Product Type | Real Time Clocks |
| Series | DS12C887 | Factory Pack Quantity | 14 |
| Subcategory | Clock & Timer ICs | Part # Aliases | DS12C887 90-12887+C06 |
| Unit Weight | 0.331575 oz |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
Equivalent Parts
For the DS12C887+ component, you may consider these replacement and alternative parts:
Part Number
Brands
Package
Description
Part Number : DS12887A
Brands :
Package :
Description :
Part Number : DS12887+
Brands :
Package :
Description :
Part Number : M48T59Y-70PC1
Brands :
Package : PDIP-28
Description : Real Time Clock Parallel 8KByte
Part Number : MK48T08B-15
Brands :
Package :
Description :
Part points
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The ds12c887 is a real-time clock (rtc) chip designed by maxim integrated. it provides accurate timing and calendar functions, including seconds, minutes, hours, days, months, and years, as well as alarm features. the chip can operate in both 12-hour and 24-hour modes and communicates with the host system through an 8-bit parallel or serial interface. it is commonly used in various applications that require precise timekeeping and scheduling capabilities.
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Equivalent
Some of the equivalent products of the ds12c887 chip include the pcf8563, mcp79400, and the ds1287. these chips are all real-time clocks (rtcs) with similar functionality to the ds12c887. -
Features
The DS12C887+ is a real-time clock with an integrated nvram and watchdog timer. its features include 114 bytes of nonvolatile ram, an alarm with a frequency output, a programmable square wave frequency output, binary or bcd format, and a 12/24 hour mode. it operates over a wide temperature range and has an automatic power fail detect and switch circuitry. -
Pinout
The DS12C887+ is a real-time clock (rtc) ic. it has a 24-pin package with various pins for power supply, ground, data, and control signals. the specific function of each pin includes clock input/output, data i/o, address select, interrupt, reset, and power management. -
Manufacturer
The DS12C887+ is manufactured by maxim integrated, a company that specializes in developing innovative analog and mixed-signal integrated circuits. they offer a wide range of products for automotive, communications, consumer, industrial, and medical markets. maxim integrated is known for its high-performance and reliable ics, including real-time clocks like the DS12C887+ which are commonly used in various electronic devices. -
Application Field
The ds12c887 is a real-time clock (rtc) chip commonly used in electronic devices. it is suitable for various applications, including industrial automation, automotive systems, medical equipment, consumer electronics, and communication systems. the ds12c887 provides accurate timekeeping, power management, and nonvolatile storage capabilities, making it useful in a wide range of applications. -
Package
The ds12c887 chip is available in a 24-pin sop (small outline package) form. the package size dimensions are approximately 15.75mm x 6.1mm.
Datasheet PDF
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