DS17487-5+ by Analog Devices

3V/5V Real-Time Clocks

Status: Active
Series: DS17487
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

The DS17285, DS17485, DS17885, DS17287, DS17487, and DS17887 real-time clocks (RTCs) are designed to be successors to the industry-standard DS12885 and DS12887. The DS17285, DS17485, and DS17885 (hereafter referred to as the DS17x85) 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 NV SRAM. The DS17x85 also incorporates a number of enhanced functions including a silicon serial number, power-on/off control circuitry, and 2K, 4K, or 8Kbytes of battery-backed NV SRAM. The DS17287, DS17487, and DS17887 (hereafter referred to as the DS17x87) integrate a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The DS17x85 and DS17x87 power-control circuitry allows the system to be powered on by an external stimulus such as a keyboard or by a time-and-date (wake-up) alarm. The active-low PWR output pin is triggered by one or either of these events, and is used to turn on an external power supply. The active-low PWR pin is under software control, so that when a task is complete, the system power can then be shut down. 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. It also operates 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 DS17x85 to maintain time and date operation when primary power is absent. The DS17x85 and DS17x87 include a VBAUX input used to power auxiliary functions such as active-low PWR control. The device is accessed through a multiplexed byte-wide interface.

Prices starting from US$13.20


Distributor Starting From Stock
Logo for Chip One Stop Chip One Stop US$13.20
42
Buy Now
Logo for Newark Electronics Newark Electronics US$15.98
10
Buy Now
Logo for element14 element14 US$17.02
10
Buy Now
View Full Pricing & Stock Comparison

Features

Incorporates Industry-Standard DS12887 PC Clock Plus Enhanced Functions
RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099
Optional +3.0V or +5.0V Operation
SMI Recovery Stack
64-Bit Silicon Serial Number
Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure
Crystal Select Bit Allows Operation with 6pF or 12.5pF Crystal
12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode
114 Bytes of General-Purpose, Battery-Backed NV SRAM
Extended Battery-Backed NV SRAM 2048 Bytes (DS17285/DS17287) 4096 Bytes (DS17485/DS17487) 8192 Bytes (DS17885/DS17887)
2048 Bytes (DS17285/DS17287)
4096 Bytes (DS17485/DS17487)
8192 Bytes (DS17885/DS17887)
RAM Clear Function
Interrupt Output with Six Independently Maskable Interrupt Flags
Time-of-Day Alarm Once per Second to Once per Day
End of Clock Update Cycle Flag
Programmable Square-Wave Output
Automatic Power-Fail Detect and Switch Circuitry
Available in PDIP, SO, or TSOP Package (DS17285, DS17485, DS17885)
Optional Encapsulated DIP (EDIP) Package with Integrated Crystal and Battery (DS17287, DS17487, DS17887)
Optional Industrial Temperature Range Available

Specifications

Interface Multiplexed
VSUPPLY (V) 35
Date/ Time Format (hh = sec/100) YYYY-MM-DD/ HH:MM:SS
Time Keeping Current (nA) (typ) 500
Memory Type NV SRAM
Memory Size (Bytes) 4K
Time of Day Alarms 1
Integrated Resonator XTAL
Package/Pins MOD/24
BudgetaryPrice (See Notes) 11.3


DS17487-5+ Semiconductors - ICs by Analog Devices

RTC W/ NV SRAM 4KB EDIP-24

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Date Format Day
Clock Format HH
Clock IC Type Alarm RTC
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Clock IC Case Style EDIP
No. of Pins 24Pins
IC Interface Type Multiplexed
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC 1 2-dimethoxyethane ethylene glycol dimethyl ether (EGDME) (15-Jan-2018)

Alternative Descriptions

RTC W/ NV SRAM, 4KB, EDIP-24 | Farnell
Rtc W/ Nv Sram, 4Kb, Edip-24 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS17487-5+ ?

Additional datasheets, footprints and schematics for DS17487-5+ are listed on our Part Details page. You can also find images and similar parts to DS17487-5+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for DS17487-5+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view DS17487-5+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the DS17487-5+ you can contact the distributor directly for product support, shipping queries etc.

Is the DS17487-5+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS17487-5+ have stock available?

Authorised distributors including Chip One Stop, Farnell, Newark Electronics and element14 have stock available or on a lead time for DS17487-5+ .

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for DS17487-5+ often in real-time on the comparison pages.

What if I can't find stock of DS17487-5+ ?

You can fill out our help required form which you can use to request a quote for DS17487-5+ from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay