DS1243Y-100 - 64K NV SRAM with Phantom Clock - Dallas Semiconductor
ß Real time clock keeps track of hundredths of
seconds, seconds, minutes, hours, days, date
of the month, months, and years
ß 8K x 8 NV SRAM directly replaces volatile
static RAM or EEPROM
ß Embedded lithium energy cell maintains
calendar operation and retains RAM data
ß Watch function is transparent to RAM
operation
ß Month and year determine the number of days
in each month; valid up to 2100
ß Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time
ß Standard 28–pin JEDEC pinout
ß Full ±10% operating range
ß Operating temperature range 0°C to 70°C
ß Accuracy is better than ±1 minute/month @
25°C
ß Over 10 years of data retention in the absence
of power
ß Available in 120, 150 and 200 ns access time
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