DS1345W Maxim, DS1345W Datasheet
DS1345W
Related parts for DS1345W
DS1345W Summary of contents
Page 1
... Additionally, the DS1345W has dedicated circuitry for monitoring the status of V and the status of the internal lithium battery. DS1345W devices in the PowerCap Module CC package are directly surface mountable and are normally paired with a DS9034PC PowerCap to form a complete Nonvolatile SRAM module ...
Page 2
... On power up, RST during power-on transients and to allow t BATTERY MONITORING The DS1345W automatically performs periodic battery voltage monitoring on a 24-hour time interval. Such monitoring begins within t occurs. After each 24-hour period has elapsed, the battery is connected to an internal 1MΩ test resistor for 1 second ...
Page 3
... 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. The PowerCap Module package design allows a DS1345W device to be surface mounted without subjecting its lithium backup battery to destructive high-temperature reflow soldering. After a DS1345W is reflow soldered, a DS9034PC is snapped on top of the PCM to form a complete Nonvolatile SRAM module ...
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... CCS1 I 30 CCS2 I CCO1 V 2.8 2.9 TP SYMBOL MIN TYP I DS1345W -0.3V to +4.6V 0°C to +70°C -40°C to +85°C -55°C to +125°C +260°C +260° See Note 10) A MAX UNITS NOTES 3 0.4 V ± = 3.3V 0.3V) CC MAX UNITS NOTES +1.0 µ ...
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... COE 100 WR1 t 20 WR2 t ODW t 5 OEW DH1 t 20 DH2 DS1345W ± =3.3V CC UNITS NOTES MAX ns 100 100 0.3V ...
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... WRITE CYCLE 1 SEE NOTES AND 12 WRITE CYCLE 2 SEE NOTES AND DS1345W ...
Page 7
... POWER-DOWN/POWER-UP CONDITION BATTERY WARNING DETECTION SEE NOTE DS1345W ...
Page 8
... WE WE the output buffers remain in a high impedance state during this period. 9. Each DS1345W 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
... RoHS status. PACKAGE TYPE PACKAGE CODE 34 PCAP going high. WE going high. CE TEMP RANGE TOLERANCE 3.3V ± 0.3V 0°C to +70°C 3.3V ± 0.3V -40°C to +85°C OUTLINE NO. PC2 ® ) under file E99151. SUPPLY PIN-PACKAGE 34 PCAP* 34 PCAP* LAND PATTERN NO. 21-0246 DS1345W Note — ...
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... © 2010 Maxim Integrated Products DESCRIPTION Maxim and the Dallas logo are registered trademarks of Maxim Integrated Products, Inc. DS1345W PAGES CHANGED ...