Product Summary

Datasheets DS1557
Product Photos 34-PCM
Mfg Application Notes Design Considerations for Maxim Real-Time Clocks
PowerCap Package Allows for Density Upgrades, Surface Mount Assembly
Using a Watchdog Timekeeping RAM with a Microcontroller
Lithium Battery Content in Maxim Products
State Machine Logic in Binary-Coded Decimal (BCD)-Formatted Real-Time Clocks
Product Training Modules Lead (SnPb) Finish for COTS
Long-Term Supply Program
Standard Package 40
Category Integrated Circuits (ICs)
Family Clock/Timing - Real Time Clocks
Series -
Packaging Tube
Type Clock/Calendar
Features Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K
Memory Size 512KB
Time Format HH:MM:SS (24 hr)
Date Format YY-MM-DD-dd
Interface Parallel
Voltage - Supply 2.97 V ~ 3.63 V
Voltage - Supply, Battery 3V
Current - Timekeeping (Max) 4mA @ 3.3V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package / Case 34-PowerCap? Module
Supplier Device Package 34-PowerCap Module
Online Catalog Parallel Address
Other Names DS1557WP120

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS1557WP-120
DS1557WP-120

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1557WP-120+
DS1557WP-120+

Maxim Integrated Products

Real Time Clock 4M NV RAM Timekeeper

Data Sheet

0-1: $21.07
1-25: $16.55
25-50: $13.91
DS1557WP-120IND+
DS1557WP-120IND+

Maxim Integrated Products

Real Time Clock 4M NV RAM Timekeeper

Data Sheet

0-1: $24.23
1-25: $19.04
25-50: $16.00
DS1557WP-120IND
DS1557WP-120IND

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable