DS1248P
1024K NV SRAM with Phantom Clock
Part Details
- Real-Time Clock (RTC) Keeps Track of Hundredths of Seconds, Minutes, Hours, Days, Date of the Month, Months, and Years
- 128k x 8 NV SRAM Directly Replaces Volatile Static RAM or EEPROM
- Embedded Lithium Energy Cell Maintains Calendar Operation and Retains RAM Data
- Watch Function is Transparent to RAM Operation
- Automatic Leap Year Compensation Valid Up to 2100
- Full 10% Operating Range
- Over 10 Years of Data Retention in the Absence of Power
- Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
- DIP Module Only
- Standard 32-Pin JEDEC Pinout
- PowerCap Module Board Only
- Surface Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal
- Replaceable Battery (PowerCap)
- Pin-for-Pin Compatible with DS1244P and DS1251P
The DS1248 1024K NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 128K words by 8 bits) with a built-in real-time clock. The DS1248 has a self-contained lithium energy source and control circuitry, which constantly monitors VCC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and writes protection is unconditionally enabled to prevent garbled data in both the memory and real-time clock.
Documentation
Data Sheet 1
Reliability Data 1
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Nonvolatile Timekeeping RAMs 1 | ||
| DS9034PCX | PowerCap with Crystal | |
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