DS1646 Overview
PIN PDIP PowerCap NAME 1, 30 1, 33, 34 N.C. Requires a pullup resistor for proper operation. Crystal Connection, VBAT Battery Connection 2 of 12 DS1646/DS1646P DESCRIPTION The DS1646 is a 128k x 8 nonvolatile static RAM with a full-function real time clock, which are both accessible in a byte-wide format.
DS1646 Key Features
- Integrates 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
- Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
- BCD-Coded Year, Month, Date, Day, Hours, Minutes, and Seconds with Leap Year pensation Valid Up to 2100
- Power-Fail Write Protection Allows for ±10% VCC Power Supply Tolerance
- DS1646 only (DIP Module)