DS1557 Maxim, DS1557 Datasheet - Page 17

• Manufacturer Part Number: DS1557
• Description: The DS1557 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and 512k x 8 nonvolatile static RAM
• Manufacturer: Maxim

REVISION HISTORY
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses
are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
M a x i m I n t e g r a t e d P r o d u c t s , 1 2 0 S a n G a b r i e l D r i v e , S u n n y v a l e , C A 9 4 0 8 6 4 0 8 - 7 3 7 - 7 6 0 0

REVISION
2010 Maxim Integrated Products
DATE
9/10
Updated the Ordering Information table to include only lead-free parts; updated the storage
temperature range and soldering temperature and added the lead temperature to the Absolute
Maximum Ratings section; added Note 11 to the I
Characteristics tables (for 5.0V and 3.3V) and the Notes section; replaced the package outline
drawings with the Package Information table
Maxim and the Dallas logo are registered trademarks of Maxim Integrated Products.
DESCRIPTION
DS1557 4Meg, Nonvolatile, Y2K-Compliant Timekeeping RAM
17 of 17
CC
parameter in the DC Electrical
CHANGED
2, 10, 11, 16
PAGES