DS1746WP-120+ Maxim Integrated Products, DS1746WP-120+ Datasheet
DS1746WP-120+
Specifications of DS1746WP-120+
Related parts for DS1746WP-120+
DS1746WP-120+ Summary of contents
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FEATURES Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit, and Lithium Energy Source Clock Registers are Accessed Identically to the Static RAM. These Registers are Resident in the Eight Top RAM Locations. Century Byte Register ...
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PIN DESCRIPTION PIN NAME PDIP PowerCap 33 A16 3 32 A14 4 30 A12 ...
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... DS1746P-70IND+ 5.0 DS1746W-120+ 3.3 DS1746W-120IND+ 3.3 DS1746WP-120+ 3.3 DS1746WP-120IND+ 3.3 +Denotes a lead(Pb)-free/RoHS-compliant package. The top mark will include a “+” symbol on lead-free devices. *DS9034-PCX+ or DS9034I-PCX+ required (must be ordered separately). † An “IND” anywhere on the top mark denotes an industrial temperature grade device. ...
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Figure 1. Block Diagram PACKAGES The DS1746 is available in two packages (32-pin DIP and 34-pin PowerCap module). The 32-pin DIP style module integrates the crystal, lithium energy source, and silicon all in one package. The 34-pin PowerCap Module Board ...
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Table 1. Truth Table > <V < <V < SETTING THE CLOCK As shown in Table ...
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Table 2. Register Map ADDRESS B7 B6 1FFFF 10 Year 1FFFE X X 1FFFD X X 1FFFC BF FT 1FFFB X X 1FFFA X OSC 1FFF9 1FFF8 W R OSC = Stop Bit R = Read Bit W = Write ...
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DATA-RETENTION MODE The 5V device is fully accessible and data can be written or read only when V However, when V is below the power-fail point internal clock registers and SRAM are blocked from any access. At this ...
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ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground..………………………………..……………………..-0.3V to +6.0V Storage Temperature Range EDIP ...................................................……………………...………………..……………….-40°C to +85°C PowerCap ................................................................................................................………...-55°C to +125°C Lead Temperature (soldering, 10s)…........................................................................................……………….+260°C Note: EDIP is hand or wave-soldered only. Soldering Temperature (reflow, PowerCap)......................................................................................…………+260° This ...
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DC ELECTRICAL CHARACTERISTICS = 3.3V 10 Over the Operating Range PARAMETER Active Supply Current TTL Standby Current ( CMOS Standby Current ( CE V -0.2V) CC Input Leakage Current (any ...
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AC CHARACTERISTICS—READ CYCLE (3.3V) = 3.3V 10 Over the Operating Range PARAMETER Read Cycle Time Address Access Time Low-Z CE Access Time CE Data Off Time Low-Z OE Access ...
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AC CHARACTERISTICS—WRITE CYCLE (5V) = 5.0V 10 Over the Operating Range PARAMETER Write Cycle Time Address Setup Time WE Pulse Width CE Pulse Width Data Setup Time Data Hold Time Data Hold Time WE Data ...
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WRITE CYCLE TIMING DIAGRAM, WRITE-ENABLE CONTROLLED A0-A16 WEZ DQ0-DQ7 DATA OUTPUT WRITE CYCLE TIMING DIAGRAM, CHIP-ENABLE CONTROLLED A0-A16 DQ0-DQ7 DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs VALID t t WEW ...
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POWER-UP/DOWN AC CHARACTERISTICS—5V = 5.0V 10 Over the Operating Range PARAMETER Before Power-Down V Fall Time PF(MAX) V PF(MIN) V Fall Time ...
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POWER-UP/DOWN CHARACTERISTICS—3.3V = 3.3V 10 Over the Operating Range PARAMETER Before H Power-Down V Fall Time PF(MAX) V PF(MIN) V Rise Time PF(MIN) ...
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AC TEST CONDITIONS Output Load: 50pF + 1TTL Gate Input Pulse Levels 3.0V Timing Measurement Reference Levels: Input: 1.5V Output: 1.5V Input Pulse Rise and Fall Times: 5ns NOTES: 1) Voltages are referenced to ground. 2) Typical values ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time 2010 Maxim Integrated Products DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs DESCRIPTION as specified by RAM vendors Maxim and the Dallas logo are registered trademarks of Maxim Integrated Products. PAGES CHANGED ...