DS1270AB Maxim, DS1270AB Datasheet

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... CC  Optional ±5% V operating range CC (DS1270AB)  Optional industrial temperature range of -40°C to +85°C, designated IND DESCRIPTION The DS1270 16M Nonvolatile SRAMs are 16,777,216-bit, fully static nonvolatile SRAMs organized as 2,097,152 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control ...

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... CC . Should the supply voltage decay, the NV SRAMs CC to RAM and disconnects the lithium energy source. CC exceeds 4.75 volts for the DS1270AB and 4.5 volts for the CC is first applied at a level greater than and access times are not ...

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... Operating Current 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 ...

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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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POWER-DOWN/POWER-UP CONDITION SEE NOTE 11 POWER-DOWN/POWER-UP TIMING PARAMETER V Fail Detect to and slew from slew from Valid to and Inactive ...

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... Cycle = 200ns for operating current All voltages are referenced to ground ORDERING INFORMATION PART TEMP RANGE DS1270AB-70# 0°C to +70°C DS1270AB-70IND# -40°C to +85°C DS1270Y-70# 0°C to +70°C DS1270Y-70IND# -40°C to +85°C #Denotes a RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements. ...

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... REVISION HISTORY REVISION DATE Updated the storage information, soldering temperature, and lead temperature information in the 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 ...