DS1345Y Maxim, DS1345Y Datasheet
DS1345Y
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DS1345Y Summary of contents
Page 1
... Typical standby current 50µA Upgrade for 128k x 8 SRAM, EEPROM or Flash Lithium battery is electrically disconnected to retain freshness until power is applied for the first time Full ±10% V operating range (DS1345Y optional ±5% V operating range CC (DS1345AB) Optional industrial temperature range of -40° ...
Page 2
... V to the RAM and disconnects the lithium energy source. Normal RAM operation CC can resume after V exceeds 4.75V for the DS1345AB and 4.5V for the DS1345Y. CC SYSTEM POWER MONITORING DS1345 devices have the ability to monitor the external V power supply condition is detected, the NV SRAMs warn a processor-based system of impending power failure by asserting ...
Page 3
... After a DS1345 PCM is reflow soldered, a DS9034PC is snapped on top of the PCM to form a complete NV SRAM module. The DS9034PC is keyed to prevent improper attachment. DS1345 PowerCap modules and DS9034PC PowerCaps are ordered separately and shipped in separate containers. See the DS9034PC data sheet for further information DS1345Y/AB ...
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... DS1345Y/AB -0.3V to +6.0V 0°C to +70°C -40°C to +85°C -55°C to +125° See Note 10) A TYP MAX UNITS 5.0 5.25 V 5 ± 5% for DS1345AB ± 10% for DS1345Y) CC TYP MAX UNITS µA +1.0 µA +1 µA 200 600 µA 50 150 85 mA 4.62 4.75 V 4.37 4 +25° ...
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... WR1 t 12 WR2 t ODW t 5 OEW DH1 t 7 DH2 DS1345Y/ ± 5% for DS1345AB ± 10% for DS1345Y) CC UNITS NOTES MAX ...
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... WRITE CYCLE 1 SEE NOTES and 12 WRITE CYCLE 2 SEE NOTES and DS1345Y/AB ...
Page 7
... POWER-DOWN/POWER-UP CONDITION SEE SEE NOTES 11 AND 14 BATTERY WARNING DETECTION SEE NOTE DS1345Y/AB ...
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... See Note 10) A TYP MAX UNITS TYP MAX UNITS years is measured from the latter of low transition, the output WE high transition, the output WE low transition, CE DS1345Y/AB NOTES NOTES = +25°C) NOTES ...
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... TOLERANCE 0°C to +70°C -40°C to +85°C 5V ± 10% 0°C to +70°C 5V ± 10% -40°C to +85°C OUTLINE NO. PC2 starting from the time power PIN-PACKAGE 5V ± PCAP* 5V ± PCAP* 34 PCAP* 34 PCAP* LAND PATTERN NO. 21-0246 DS1345Y/ Note — ...
Page 10
... Updated the storage, lead, and soldering information in the Absolute Maximum Ratings section, removed the unused AC timing specs in 10/10 the AC Electrical Characteristics table, updated the Ordering Information table, replaced the package outline drawing with the Package Information table DESCRIPTION DS1345Y/AB PAGES CHANGED ...