DS12B887
Category: IC Chips
Description: Real Time Clock
Price range ($)
0.78232 23.46960
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Returning
Returns are normally accepted when completed within 60 days from the date of the parcel delivered.
Defective ( Please provide a third party quality report of nonconforming products)
Return Freight charges must be prepaid; we will not accept COD shipments.
Warranty
All UTSOURCE purchases have a 60 days money back return policy, plus a 90 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
DS12B887
DS12B887 has several brands around the world that may have alternate names for DS12B887 due to regional differences or acquisition. DS12B887 may also be known as the following names:
All sellers
6
Brand new
6
Certified preowned
6
Official
6
Third Party
6
Description
DS12B887
Stock:33951 |
Dallas 95+ |
Real Time Clock |
≥1: US $3.13800 US $2.82420 ≥5: US $2.98110 US $2.68299 ≥10: US $2.82420 US $2.54178 ≥20: US $2.74575 US $2.47118 ≥50: US $2.66730 US $2.40057 ≥100: US $2.58885 US $2.32997 ≥200: US $2.51040 US $2.25936 ≥500: US $2.47902 US $2.23112 ≥1000: US $2.43195 US $2.18876
More:
Inquiry
|
DS12B887
Stock:38028 |
Dallas 99+ |
Real Time Clock |
≥1: US $2.79400 US $2.51460 ≥5: US $2.65430 US $2.38887 ≥10: US $2.51460 US $2.26314 ≥20: US $2.44475 US $2.20028 ≥50: US $2.37490 US $2.13741 ≥100: US $2.30505 US $2.07455 ≥200: US $2.23520 US $2.01168 ≥500: US $2.20726 US $1.98653 ≥1000: US $2.16535 US $1.94882
More:
Inquiry
|
DS12B887
Stock:125 |
Dallas |
Real Time Clock |
≥1: US $2.68224 US $2.41402
More:
Inquiry
|
DS12B887
Stock:1 |
Dallas 9651+ |
Real Time Clock |
≥1: US $0.78232 US $0.70409
More:
Inquiry
|
Out of stock |
DS12B887
Stock:60 |
Dallas 99+ |
Real Time Clock |
≥1: US $23.46960 US $21.12264
More:
Inquiry
|
DS12B887
Stock:3 |
Dallas 9740 |
Real Time Clock |
≥1: US $2.68224 US $2.52131
More:
Inquiry
|
FEATURES
● Drop-in replacement for IBM AT computer clock/calendar
● Pin compatible with the MC146818B and DS1287
● Totally nonvolatile with over 10 years of operation in the absence of power
● Self-contained subsystem includes lithium, quartz, and support circuitry
● Counts seconds, minutes, hours, days, day of the week, date, month, and year with leap year compensation
● Binary or BCD representation of time, calendar, and alarm
● 12-or 24-hour clock with AM and PM in 12-hour mode
● Daylight Savings Time option
● Multiplex bus for pin efficiency
● Interfaced with software as 128 RAM locations
— 14 bytes of clock and control registers
— 114 bytes of general purpose RAM
● Programmable square wave output signal
● Bus-compatible interrupt signals (IRQ)
● Three interrupts are separately software-maskable and testable
— Time-of-day alarm once/second to once/day
— Periodic rates from 122μs to 500 ms
— End of clock update cycle
DESCRIPTION
The DS12B887 Real Time Clock plus RAM is designed to be a direct replacement for the DS1287A or DS12887A. The DS12B887 is identical in form, fit, and function to the DS1287A or DS12887A, with the exception of RCLR, and has an additional 64 bytes of general purpose RAM. Access to this additional RAM space is determined by the logic level presented on AD6 during the address portion of an access cycle. A lithium energy source, quartz crystal, and write-protection circuitry are contained within a 24-pin dual in-line package. As such, the DS12B887 is a complete subsystem replacing 16 components in a typical application. The functions include a nonvolatile time-of-day clock, an alarm, a one-hundred-year calendar, programmable interrupt, square wave generator, and 114 bytes of nonvolatile static RAM. The real time clock is distinctive in that time-of-day and memory are maintained even in the absence of power.
E-catalog
Freight calculation
Express:(FEDEX, UPS, DHL, TNT)Free shipping on first 0.5kg for orders over 200$,Overweight will be charged separately
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