DS1501WE+T&R

Description：IC RTC CLK/CALENDAR PAR 28TSOP
Series：-

SKU:0c158895741f Category: Real Time Clocks Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

DS1501WE+T&R is listed in the Real Time Clock range at ChipApex. The manufacturer field lists Analog Devices Inc./Maxim Integrated. Its product description is IC RTC CLK/CALENDAR PAR 28TSOP. Review the specifications below when checking this part for your BOM.

Real Time Clock specifications for DS1501WE+T&R

Description：IC RTC CLK/CALENDAR PAR 28TSOP
Series：-
Package：Tape & Reel (TR)
Mfr：Analog Devices Inc./Maxim Integrated
Type：Clock/Calendar
Features：Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K
Memory Size：256B
Time Format：HH:MM:SS (24 hr)
Date Format：YY-MM-DD-dd
Interface：Parallel
Voltage - Supply：3V ~ 3.6V
Voltage - Supply, Battery：2.5V ~ 3.7V
Current - Timekeeping (Max)：4mA @ 3V ~ 3.6V
Operating Temperature：0°C ~ 70°C
Mounting Type：Surface Mount
Grade：-
Qualification：-
Package / Case：28-TSSOP (0.465", 11.80mm Width)
Supplier Device Package：28-TSOP

Real Time Clock datasheet and documents for DS1501WE+T&R

DS1501WE+T&R

Real Time Clock Overview

The DS1501WE+T&R is a Y2K-compliant real-time clock/calendar integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates at +3.3V with an active supply current of up to 10mA and standby currents of 4mA (TTL) or 4mA (CMOS). The device features a parallel interface, 256 bytes of battery-backed NVSRAM, and supports a 32.768kHz crystal input. It includes programmable watchdog timers, alarms, power-on reset, and battery monitors. The component is housed in a 28-pin TSOP package and functions within a temperature range of 0°C to +70°C.

Real Time Clock Feature Summary

Y2K-Compliant RTC with automatic leap-year compensation valid until 2100
256 Bytes Battery-Backed NVSRAM for data retention
Programmable Watchdog Timer and Day-of-Week/Date Alarm
Precision Power-On Reset and Power-Control Circuitry

Real Time Clock Applications

Remote Systems
Battery-Backed Systems
Telecom Switches
Office Equipment
Consumer Electronics

Real Time Clock Procurement Notes

Verify the specific ordering suffix T&R indicates tape-and-reel packaging. Confirm the WE suffix corresponds to the 3.3V voltage variant and the 0°C to +70°C commercial temperature range. Ensure compatibility with the 28-pin TSOP footprint during procurement planning.

Real Time Clock Selection Notes

Select this part for systems requiring a standalone RTC with parallel interface access. The 3.3V operating voltage distinguishes it from the 5V DS1501Y variants. Consider the auxiliary battery input (VBAUX) if kickstart or square-wave functionality is required during main power loss.

Real Time Clock Part Context

This component belongs to the DS1501/DS1511 family of Y2K-compliant watchdog real-time clocks. The DS1501WE+ is the lead-free/RoHS-compliant version of the DS1501WE. It shares functional similarities with the DS1511 module but requires external crystal and battery components.