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DS1501WZN+

Description
Y2K-Compliant Watchdog Real-Time Clocks
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size205KB,22 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

DS1501WZN+ Overview

Y2K-Compliant Watchdog Real-Time Clocks

DS1501WZN+ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP, SOP28,.4
Contacts28
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
maximum clock frequency0.032 MHz
External data bus width8
Information access methodsPARALLEL, DIRECT ADDRESS
interrupt capabilityY
JESD-30 codeR-PDSO-G28
length17.9 mm
Number of terminals28
Number of timers1
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP28,.4
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply3.3 V
Certification statusNot Qualified
Maximum seat height2.65 mm
Maximum supply voltage3.6 V
Minimum supply voltage3 V
Nominal supply voltage3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
shortest timeSECONDS
Maximum time at peak reflow temperatureNOT SPECIFIED
VolatileYES
width7.5 mm
uPs/uCs/peripheral integrated circuit typeTIMER, REAL TIME CLOCK
Base Number Matches1
DS1501/DS1511
Y2K-Compliant Watchdog Real-Time Clocks
GENERAL DESCRIPTION
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.
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)
Underwriters Laboratories (UL) Recognized
PIN-PACKAGE
28 DIP (0.600)
28 TSOP
28 TSOP
28 TSOP/Tape & Reel
28 TSOP/Tape & Reel
TOP MARK*
DS1501W
DS1501WE
DS1501WEN
DS1501WEN
DS1501WE
APPLICATIONS
Remote Systems
Battery-Backed Systems
Telecom Switches
Office Equipment
Consumer Electronics
Pin Configurations and Typical Operating Circuit appear at
end of data sheet.
ORDERING INFORMATION
PART
DS1501W+
DS1501WE+
DS1501WEN+
DS1501WEN+T&R
DS1501WE+T&R
VOLTAGE (V)
3.3
3.3
3.3
3.3
3.3
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*A
“+” anywhere on the top mark denotes a lead(Pb)-free device. An N or IND denotes an industrial temperature device.
Ordering Information continued at end of data sheet.
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
www.maxim-ic.com/errata.
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REV: 010909
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