DS1486-120+ Maxim Integrated Products, DS1486-120+ Datasheet
DS1486-120+
Specifications of DS1486-120+
Related parts for DS1486-120+
DS1486-120+ Summary of contents
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... Encapsulated Package (32 PIN 740) RAMified Watchdog Timekeepers ORDERING INFORMATION PART DS1486-120 DS1486-120+ DS1486P-120 DS1486P-120+ DS9034PCX DS9034PCX+ *DS9034PCX PowerCap required (must be ordered separately). **A ‘+’ indicates lead-free. The top mark will include a ‘+’ symbol on lead-free devices. PowerCap is a registered trademark of Dallas Semiconductor. ...
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PIN DESCRIPTION PIN NAME PDIP PowerCap INTB (INTB ...
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... The design allows the PowerCap to be mounted on top of the DS1486P after the completion of the surface mount process. Mounting the PowerCap after the surface mount process prevents damage to the crystal and battery due to high temperatures required for solder reflow ...
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... OPERATION—WRITE REGISTERS The DS1486 is in the write mode whenever the WE (Write Enable) and CE (Chip Enable) signals are in the active (Low) state after the address inputs are stable. The latter occurring falling edge will determine the start of the write cycle. The write cycle is terminated by the earlier rising edge ...
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Figure 1. Block Diagram ...
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TIME-OF-DAY REGISTERS Registers and A contain Time-of-Day data in BCD. Ten bits within these eight registers are not used and will always read 0 regardless of how they are written. Bits 6 and ...
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WATCHDOG ALARM REGISTERS Registers C and D contain the time for the Watchdog Alarm. The two registers contain a time count from 00.01 to 99.99 seconds in BCD. The value written into the Watchdog Alarm Registers can be written or ...
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Figure 2. RAMified Timekeeper Registers Figure 3. Time-of-Day Alarm Mask Bits REGISTER (3) MINUTES (5) HOURS Note: Any other bit combinations of mask bit settings produce illogical operation. (7) DAYS 1 Alarm ...
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COMMAND REGISTER (0Bh) Bit 7 Bit 6 TE IPSW IBH/LO Bit 7: Transfer Enable (TE). This bit when set to a logic 0 will disable the transfer of data between internal and external clock registers. The contents in the external ...
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ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground…………….……………………………….-0.3V to +6.0V Operating Temperature Range (Noncondensing)….………………………………………….0°C to +70°C Storage Temperature Range…………………………….…………………………………..-40°C to +85°C Soldering Temperature (EDIP) (leads, 10 seconds)…………………...…+260°C for 10 seconds (Note 14) Soldering Temperature……………………………….See IPC/JEDEC J-STD-020 Specification ...
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AC ELECTRICAL CHARACTERISTICS = 5.0V ±10 0°C to +70°C PARAMETER Read Cycle Time Address Access Time CE Access Time OE Access Time Output Active Output High-Z from Deselect Output Hold from ...
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WRITE CYCLE 1 (Notes WRITE CYCLE 2 (Notes 2, 8) TIMING DIAGRAM: INTERRUPT OUTPUTS PULSE MODE (Notes 11, 12 ...
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POWER-UP/POWER-DOWN TIMING (T = 0°C to +70°C) A PARAMETER CE High to Power-Fail Recovery at Power-Up V Slew Rate CC Power-Down V Slew Rate CC Power-Down V Slew Rate Power-Up CC Expected Data Retention POWER-DOWN/POWER-UP TIMING WARNING: Under no circumstances ...
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... low or the WE low transition occurs prior to or simultaneously with the CE low transition, the output buffers remain in a high-impedance state during this period. 9) Each DS1486 is marked with a four-digit date code AABB. AA designates the year of manufacture. BB designates the week of manufacture. The expected t the date of manufacture. ...