DS1243Y Description
PIN NAME FUNCTION 1 RST Active-Low Reset Input. This pin has an internal pullup resistor connected to VCC. No Connection 27 WE Active-Low Write-Enable Input 28 VCC Power-Supply Input 14 GND Ground DS1243Y DESCRIPTION The DS1243Y 64K NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 8192 words by 8 bits) with a built-in real time clock.
DS1243Y Key Features
- Real-Time Clock Keeps Track of Hundredths of Seconds, Seconds, Minutes, Hours, Days, Date of the Month, Months, and Year
- 8K 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 pensation Valid Up to 2100
- Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
- Standard 28-Pin JEDEC Pinout
- Full ±10% Operating Range
- Accuracy is Better than ±1 Minute/Month at +25°C
- Over 10 Years of Data Retention in the Absence of Power