DS1685 Datasheet Text
..
DS1685/DS1687 3V/5V Real-Time Clocks
.maxim-ic.
Features
Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features
Such as:
- Y2K pliant
- +3V or +5V Operation
- 64-Bit Silicon Serial Number
- Power-Control Circuitry Supports System PowerOn from Date/Time Alarm or Key Closure
- 32kHz Output for Power Management
- Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal
- SMI Recovery Stack
- 242 Bytes Battery-Backed NV RAM
- Auxiliary Battery Input
- -
- -
- -
- RAM Clear Input Century Register Date Alarm Register patible with Existing BIOS for Original DS1287 Functions Available as Chip (DS1685) or Stand-Alone Encapsulated DIP (EDIP) with Embedded Battery and Crystal (DS1687) Timekeeping Algorithm Includes Leap-Year pensation Valid Through 2099 Underwriters Laboratory (UL) Recognized
APPLICATIONS
Embedded Systems Utility Meters Security Systems Network Hubs, Bridges, and Routers
PACKAGE DIMENSION INFORMATION
.maxim-ic./DallasPackInfo
PIN CONFIGURATIONS
TOP VIEW
PWR X1 X2 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 GND 1 2 3 24 23 VCC X2 X1 PWR N.C. VCC SQW PWR 1 2 3 4 5 6 7 8 9 10 11 12 24 VCC SQW VBAUX RCLR N.C. IRQ KS RD N.C. WR ALE CS
DS1685/ DS1685S/ 22 4 DS1685E 21
5 6 7 8 9 10 11 12 20 19 18 17 16 15 14 13
VBAUX RCLR VBAT IRQ KS RD GND WR ALE CS AD0 AD1 AD2 AD3 AD4 AD5 N.C.
5 6 7 8 9...