Specification	DS1557WP-120IND

Current - Timekeeping (Max)	4 mA
Date Format	YY-MM-DD-dd
Features	Watchdog Timer, NVSRAM, Leap Year, Alarm, Y2K
Interface	Parallel
Memory Size	512 kB
Mounting Type	Surface Mount
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package / Case	34-PowerCap™ Module
Package Name	34-PowerCap Module
Time Format	HH:MM:SS (24 hr)
Type	Clock/Calendar
Voltage - Supply (Maximum)	3.63 V
Voltage - Supply (Minimum)	2.97 V
Voltage - Supply, Battery	3 V

DS1557 Series

Part	Type	Package / Case	Current - Timekeeping (Max)	Memory Size	Package Name	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Voltage - Supply, Battery	Interface	Features	Time Format	Date Format	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type
Analog Devices Inc./Maxim Integrated DS1557P-70	Clock/Calendar	34-PowerCap™ Module	6 mA	512 kB	34-PowerCap Module	5.5 V	4.5 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	70 °C	0 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557P-70IND	Clock/Calendar	34-PowerCap™ Module	6 mA	512 kB	34-PowerCap Module	5.5 V	4.5 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	85 °C	-40 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557P-70IND+	Clock/Calendar	34-PowerCap™ Module	6 mA	512 kB	34-PowerCap Module	5.5 V	4.5 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	85 °C	-40 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557WP-120IND	Clock/Calendar	34-PowerCap™ Module	4 mA	512 kB	34-PowerCap Module	3.63 V	2.97 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	85 °C	-40 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557WP-120IND+	Clock/Calendar	34-PowerCap™ Module	4 mA	512 kB	34-PowerCap Module	3.63 V	2.97 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	85 °C	-40 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557P-70+	Clock/Calendar	34-PowerCap™ Module	6 mA	512 kB	34-PowerCap Module	5.5 V	4.5 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	70 °C	0 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557WP-120+	Clock/Calendar	34-PowerCap™ Module	4 mA	512 kB	34-PowerCap Module	3.63 V	2.97 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	70 °C	0 °C	Surface Mount
Analog Devices Inc./Maxim Integrated DS1557WP-120	Clock/Calendar	34-PowerCap™ Module	4 mA	512 kB	34-PowerCap Module	3.63 V	2.97 V	3 V	Parallel	Alarm Leap Year NVSRAM Watchdog Timer Y2K	HH:MM:SS (24 hr)	YY-MM-DD-dd	70 °C	0 °C	Surface Mount

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