DS1511W+ by Analog Devices

Y2K-Compliant Watchdog Real-Time Clocks


The DS1501/DS1511 are full-function, year 2000-compliant real-time clock/calendars (RTCs) with an RTC alarm, watchdog timer, power-on reset, battery monitors, 256 bytes NV SRAM, and a 32.768kHz output. User access to all registers within the DS1501/DS1511 is accomplished with a byte-wide interface, as shown in Figure 8. The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format. Corrections for day of month and leap year are made automatically.

Where to Buy

Prices starting from US$8.67

Distributor Stock
Logo for Farnell
Farnell
from US$8.67
No stock
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Logo for Analog Devices
Analog Devices
from US$14.96
230
in stock
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Logo for element14
element14
from US$15.78
-
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Features

BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100
Programmable Watchdog Timer and RTC Alarm
Century Register; Y2K-Compliant RTC
+3.3 (W) or +5V (Y) Operation
Precision Power-On Reset
Power-Control Circuitry Support System Power-On from Date/Day/Time Alarm or Key Closure/Modem-Detect Signal
256 Bytes Battery-Backed SRAM
Auxiliary Battery Input
Accuracy of DS1511 Better than ±1 Minute/Month at +25°C
Day-of-Week/Date Alarm Register
Crystal Select Bit Allow RTC to Operate with 6pF or 12.6pF Crystal (DS1501)
Battery Voltage-Level Indicator Flags
Available as Chip (DS1501) or Stand-Alone Encapsulated DIP Module with Embedded Battery and Crystal (DS1511)

Specifications

Interface Bytewide parallel
VSUPPLY (V) 3 to 5.5
Date/ Time Format (hh = sec/100) YYYY-MM-DD/ HH:MM:SS
Time Keeping Current (nA) (typ) 270
Memory Type NV SRAM
Memory Size (Bytes) 256
Time of Day Alarms 1
Package/Pins MOD/28
BudgetaryPrice (See Notes) 12.71


DS1511W+ Semiconductors - ICs by Analog Devices

RTC W/ NVSRAM 2MB HH:MM:SS EDIP-28

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

Specifications

Date Format Day
Clock Format HH
Clock IC Type RTC
Supply Voltage Min 3V
Supply Voltage Max 3.6V
Clock IC Case Style EDIP
No. of Pins 28Pins
IC Interface Type Bytewide
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

Y2K-Compliant Watchdog Real-Ti | Analog Devices
RTC, Y2K, W/WATCHDOG, 3.3V, 28EDIP | Farnell

Frequently Asked Questions

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Additional datasheets, footprints and schematics for DS1511W+ are listed on our Part Details page. You can also find images and similar parts to DS1511W+ on this page.

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Is the DS1511W+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS1511W+ have stock available?

Authorised distributors including Analog Devices, element14 and Farnell have stock available or on a lead time for DS1511W+ .

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