DS1245W Maxim, DS1245W Datasheet
DS1245W
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DS1245W Summary of contents
Page 1
... PowerCap Module (PCM) (Uses DS9034PC+ or DS9034PCI+ PowerCap) PIN DESCRIPTION A0 - A16 - Address Inputs DQ0 - DQ7 - Data In/Data Out - Chip Enable CE - Write Enable WE - Output Enable Power (+3.3V) CC GND - Ground Connect DS1245W A15 A13 A11 A10 ...
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... PACKAGES The DS1245W is available in two packages: 32-pin DIP and 34-pin PowerCap Module (PCM). The 32- pin DIP integrates a lithium battery, an SRAM memory and a nonvolatile control function into a single package with a JEDEC-standard 600-mil DIP pinout. The 34-pin PowerCap Module integrates SRAM for an out-of-tolerance condition ...
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... DS9034PC PowerCap. The PowerCap Module package design allows a DS1245W PCM device to be surface mounted without subjecting its lithium backup battery to destructive high- temperature reflow soldering. After a DS1245W module base is reflow soldered, a DS9034PC PowerCap is snapped on top of the base to form a complete Nonvolatile SRAM module ...
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... See Note 10) A TYP MAX UNITS 3 See Note 10) (V =3.3V CC TYP MAX UNITS µA +1.0 µA +1 µA 50 250 µA 30 150 50 mA 2.9 3.0 V TYP MAX UNITS DS1245W +260°C +260°C NOTES NOTES NOTES ...
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... COE 100 WR1 t 20 WR2 t ODW t 5 OEW DH1 t 20 DH2 DS1245W = 3.3V ±0.3V) CC UNITS NOTES MAX ns 100 100 ...
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... WRITE CYCLE 1 SEE NOTES AND DS1245W ...
Page 7
... WRITE CYCLE 2 SEE NOTES AND 12 \ POWER-DOWN/POWER-UP CONDITION DS1245W ...
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... WE WE the output buffers remain in a high impedance state during this period. 9. Each DS1245W has a built-in switch that disconnects the lithium source until V the user. The expected t DR time power is first applied by the user. ...
Page 9
... Output: 1.5V Input pulse Rise and Fall Times: 5ns SUPPLY TOLERANCE 3.3V ± 0.3V 3.3V ± 0.3V 3.3V ± 0.3V 3.3V ± 0.3V OUTLINE NO. MDT32+6 21-0245 PC2+3 21-0246 DS1245W PIN- SPEED GRADE PACKAGE (ns) 32 740 EDIP 100 34 PowerCap* 100 32 740 EDIP 100 34 PowerCap* 100 Note that a “+”, LAND PATTERN NO. ...
Page 10
... Absolute Maximum Ratings section; removed the -150 MIN/MAX information from the AC Electrical 11/10 Characteristics table; updated the Ordering Information table (removed -150 parts and leaded -100 parts); removed the PowerCap module drawings and updated the Package Information table DESCRIPTION DS1245W PAGES CHANGED ...