DS1230W Maxim, DS1230W Datasheet
DS1230W
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DS1230W Summary of contents
Page 1
... PowerCap Module (PCM) (Uses DS9034PC+ or DS9034PCI+ PowerCap) PIN DESCRIPTION A0 - A14 - Address Inputs DQ0 - DQ7 - Data In/Data Out - Chip Enable CE - Write Enable WE - Output Enable Power (+3.3V) CC GND - Ground Connect DS1230W A13 A11 OE 22 A10 DQ7 ...
Page 2
... V the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. DIP-package DS1230W devices can be used in place of existing 32k x 8 static RAMs directly conforming to the popular bytewide 28-pin DIP standard. The DIP devices also match the pinout of 28256 EEPROMs, allowing direct substitution while enhancing performance ...
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... PACKAGES The DS1230W is available in two packages: 28-pin DIP and 34-pin PowerCap Module (PCM). The 28- 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 memory and nonvolatile control into a module base along with contacts for connection to the lithium battery in the DS9034PC PowerCap ...
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... See Note 10) A TYP MAX UNITS 3 3.3V ±0.3V) : See Note 10 TYP MAX UNITS µA +1.0 µA +1 µA 50 250 µA 30 150 50 mA 2.9 3.0 V DS1230W 0°C to +70°C +260°C +260°C NOTES NOTES ...
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... 100 WR1 t 20 WR2 t ODW t 5 OEW DH1 t 20 DH2 DS1230W (T = +25°C) A MAX UNITS NOTES 3.3V ±0.3V) CC UNITS NOTES MAX ns 100 100 ...
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... READ CYCLE SEE NOTE 1 WRITE CYCLE 1 SEE NOTES AND DS1230W ...
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... WRITE CYCLE 2 SEE NOTES AND 13 POWER-DOWN/POWER-UP CONDITION DS1230W ...
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... WE WE the output buffers remain in a high-impedance state during this period. 9. Each DS1230W 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
... 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. MDT28+3 21-0245 PC2+4 21-0246 DS1230W SPEED GRADE PIN-PACKAGE (ns) 28 740 EDIP 100 34 PowerCap* 100 28 740 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 DS1230W PAGES CHANGED ...