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Product Detailed Parameters
- Description：IC RTC PHANTOM TIME CHIP PAR
- Series：-
- Package：Tube
- Mfr：Analog Devices Inc./Maxim Integrated
- Type：Phantom Time Chip
- Features：Leap Year, NVSRAM
- Memory Size：512KB
- Time Format：HH:MM:SS:hh (12/24 hr)
- Date Format：YY-MM-DD-dd
- Interface：Parallel
- Voltage - Supply：2.97V ~ 3.63V
- Voltage - Supply, Battery：3V
- Current - Timekeeping (Max)：7mA @ 3.3V
- Operating Temperature：0°C ~ 70°C
- Mounting Type：-
- Grade：-
- Qualification：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The DS1251WP-C02+ is a nonvolatile RAM (NV SRAM) integrated with a phantom clock real-time clock (RTC). It provides 512K x 8 bits of memory and maintains timekeeping data via an embedded lithium energy cell. The device features automatic leap year compensation valid up to the year 2100 and ensures over 10 years of data retention without power. It utilizes a parallel interface and operates within a voltage range of 2.97V to 3.63V, consuming a maximum current of 7mA at 3.3V during timekeeping. Designed for surface-mount applications, it is housed in a 34-pin PowerCap module package.
Feature Summary
- Integrated 512K x 8 NV SRAM with phantom clock RTC
- Automatic leap year compensation valid through 2100
- Embedded lithium battery for >10 years data retention
- Parallel interface with 34-pin PowerCap module package
Applications
- Industrial control systems requiring persistent timekeeping
- Data logging equipment needing nonvolatile storage
- Telecommunications infrastructure maintaining calendar functions
Procurement Notes
Verify the specific C02 suffix against official documentation to confirm its exact functional or packaging designation relative to standard variants like DS1251WP-120+. Confirm lead-free/RoHS compliance status as indicated by the '+' suffix. Ensure the separate PowerCap component (DS9034PCX+) is ordered for complete assembly.
Selection Notes
Select this component when a parallel interface and high-density NV SRAM are required alongside autonomous timekeeping. The 3.3V operating range suits low-voltage logic systems. Verify that the system design accommodates the 34-pin PowerCap module footprint and allows for the separate mounting of the battery/crystal unit post-reflow.
Part Context
This part belongs to the DS1251 family of 4096K NV SRAMs with phantom clocks. It is upward compatible with the DS1248 series. The 'P' in the model number indicates the PowerCap board-only package, which requires a separate PowerCap containing the battery and crystal for operation.
Replacement Considerations
Direct replacements include other DS1251 variants such as DS1251WP-120+ or DS1251WP-120IND+ depending on temperature requirements. Ensure any substitute matches the 34-pin PowerCap form factor and phantom clock protocol.
