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DS1501WE+TR

Description
1 TIMER(S), REAL TIME CLOCK, PDSO28
Categorysemiconductor    The embedded processor and controller   
File Size275KB,21 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

DS1501WE+TR Overview

1 TIMER(S), REAL TIME CLOCK, PDSO28

DS1501WE+TR Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals28
Maximum operating temperature85 Cel
Minimum operating temperature-40 Cel
Maximum supply/operating voltage3.63 V
Minimum supply/operating voltage2.97 V
Rated supply voltage3.3 V
External data bus width8
Processing package descriptionTSOP-28
stateTRANSFERRED
packaging shapeRECTANGULAR
Package SizeSMALL OUTLINE
surface mountYes
Terminal formGULL WING
Terminal locationDUAL
Packaging MaterialsPLASTIC/EPOXY
Temperature levelINDUSTRIAL
Maximum FCLK clock frequency0.0320 MHz
Information access methodsPARALLEL, DIRECT ADDRESS
Microprocessor typeREAL TIME CLOCK
Number of timers1
DS1501/DS1511
Y2K-Compliant Watchdog
Real-Time Clocks
www.maxim-ic.com
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 or +5V 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 NV 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
Battery Voltage-Level Indicator Flags
Available as Chip (DS1501) or Stand-Alone
Encapsulated DIP Module with Embedded
Battery and Crystal (DS1511)
UL Recognized
PIN-PACKAGE
28 DIP (0.600)
28 DIP (0.600)
28 TSOP
28 TSOP
28 TSOP
28 TSOP
28 TSOP/Tape & Reel
28 TSOP/Tape & Reel
28 TSOP/Tape & Reel
28 TSOP/Tape & Reel
TOP MARK*
DS1501W
DS1501W
DS1501WE
DS1501WE
DS1501WEN
DS1501WEN
DS1501WEN
DS1501WEN
DS1501WE
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
DS1501W+
DS1501WE
DS1501WE+
DS1501WEN
DS1501WEN+
DS1501WEN/T&R
DS1501WEN+T&R
DS1501WE/T&R
DS1501WE+T&R
VOLTAGE (V)
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
+
Denotes a lead-free/RoHS-compliant device.
*
A “+” anywhere on the top mark denotes a lead-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.
1 of 21
REV: 011607

DS1501WE+TR Related Products

DS1501WE+TR DS1501WE/TR DS1501WEN/TR
Description 1 TIMER(S), REAL TIME CLOCK, PDSO28 1 TIMER(S), REAL TIME CLOCK, PDSO28 1 TIMER(S), REAL TIME CLOCK, PDSO28
Number of functions 1 1 1
Number of terminals 28 28 28
Maximum operating temperature 85 Cel 85 Cel 85 Cel
Minimum operating temperature -40 Cel -40 Cel -40 Cel
Maximum supply/operating voltage 3.63 V 3.63 V 3.63 V
Minimum supply/operating voltage 2.97 V 2.97 V 2.97 V
Rated supply voltage 3.3 V 3.3 V 3.3 V
External data bus width 8 8 8
Processing package description TSOP-28 TSOP-28 TSOP-28
state TRANSFERRED TRANSFERRED TRANSFERRED
packaging shape RECTANGULAR RECTANGULAR RECTANGULAR
Package Size SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
surface mount Yes Yes Yes
Terminal form GULL WING GULL WING GULL WING
Terminal location DUAL DUAL DUAL
Packaging Materials PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
Maximum FCLK clock frequency 0.0320 MHz 0.0320 MHz 0.0320 MHz
Information access methods PARALLEL, DIRECT ADDRESS PARALLEL, DIRECT ADDRESS PARALLEL, DIRECT ADDRESS
Microprocessor type REAL TIME CLOCK REAL TIME CLOCK REAL TIME CLOCK
Number of timers 1 1 1
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