DS1270Y Maxim, DS1270Y Datasheet
DS1270Y
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DS1270Y Summary of contents
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... Low-power CMOS operation Read and write access times Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time Full ±10% V operating range (DS1270Y) CC Optional ±5% V operating range CC (DS1270AB) Optional industrial temperature range of -40° ...
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... ODW DATA RETENTION MODE The DS1270AB provides full-functional capability for V 4.5 volts. The DS1270Y provides full-functional capability for V protects by 4.25 volts. Data is maintained in the absence of V The nonvolatile static RAMs constantly monitor V automatically write protect themselves, all inputs become don’t care, and all outputs become high- impedance ...
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... Write Protection Voltage (DS1270AB) Write Protection Voltage (DS1270Y) CAPACITANCE PARAMETER Input Capacitance Output Capacitance SYMBOL MIN TYP V 4.75 5 4 =5V ± 5% for DS1270AB =5V ± 10% for DS1270Y See Note 10 SYMBOL MIN TYP 1.0 CCS1 I 100 CCS2 ...
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... WR1 t WR2 15 t ODW t 5 OEW DH1 t DH2 DS1270Y/AB =5V ± 5% for DS1270AB) CC =5V ± 10% for DS1270Y) CC UNITS NOTES MAX ...
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... TIMING DIAGRAM: WRITE CYCLE 1 TIMING DIAGRAM: WRITE CYCLE 2 SEE NOTES AND DS1270Y/AB ...
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... WE or going high See Note 10) A TYP MAX UNITS µs 1.5 µs µ 125 TYP MAX UNITS years is measured from the latter of low transition, the output WE high transition, the output WE DS1270Y/AB NOTES 11 = +25°C) NOTES ...
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... SUPPLY PIN-PACKAGE TOLERANCE 5V ± 740 EDIP 5V ± 740 EDIP 5V ± 10% 36 740 EDIP 5V ± 10% 36 740 EDIP OUTLINE NO. MDT36#2 21-0245 DS1270Y/AB low transition starting from the time power SPEED GRADE (ns Note that a “+”, LAND PATTERN NO. — ...
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... Absolute Maximum Ratings section; removed the -100 MIN/MAX information from the AC Electrical 11/10 Characteristics table; updated the Ordering Information table (removed -100 parts and leaded -70 parts); replaced the package outline drawing with the Package Information table DESCRIPTION DS1270Y/AB PAGES CHANGED ...