M41T56
512 bit (64 bit x8) Serial Access TIMEKEEPER® SRAM
FEATURES SUMMARY
■ 5V ±10% SUPPLY VOLTAGE
■ COUNTERS FOR SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, YEARS, AND
CENTURY
■ YEAR 2000 COMPLIANT
■ SOFTWARE CLOCK CALIBRATION
■ AUTOMATIC POWER-FAIL DETECT AND
SWITCH CIRCUITRY
■ I2C BUS COMPATIBLE
■ 56 BYTES OF GENERAL PURPOSE RAM
■ ULTRA-LOW BATTERY SUPPLY CURRENT
OF 450nA
■ LOW OPERATING CURRENT OF 300µA
■ OPERATING TEMPERATURE OF –40 to
85°C
■ AUTOMATIC LEAP YEAR COMPENSATION
■ SPECIAL SOFTWARE PROGRAMMABLE
OUTPUT
■ PACKAGING OPTIONS INCLUDE:
– 28-lead SOIC and SNAPHAT® TOP (to be
ordered separately)
– SO8
Figure 1. 8-pin SOIC Package
8
1
SO8 (M)
150mil Width
Figure 2. 28-pin SOIC Package
SNAPHAT (SH)
Battery & Crystal
28
1
SOH28 (MH)
June 2004
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