DS1646P
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)
PIN CONFIGURATIONS
N.C. A16 A14 A12
A7 A6 A5 A4 A3 A2 A1
A0
DQ0
DQ1 DQ2
1 2 3 4 5 6 7 8 9 10 11 12
32 VCC 31 A15 30 N.C. 29 WE 28 A13 27 A8 26 A9 25 A11 24 OE 23 A10 22 CE 21 DQ7
20 DQ6
19 DQ5
18 DQ4
17 DQ3
32-Pin Encapsulated Package
Standard JEDEC Bytewide 128k x 8 RAM Pinout
- DS1646P Only (Power Cap Module Board)
Surface Mountable Package for Direct Connection to Power Cap Containing Battery and Crystal
Replaceable Battery (Power Cap) Power-Fail Output...
