DS1260 Datasheet, PDF (1/8 Pages) Dallas Semiconductor – Smart Battery

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FEATURES
Encapsulated lithium energy cell with shelf
life beyond 10 years
Available with energy capacities of 250, 500,
and 1,000 mAH @ 3 volts
Plugs into a standard 16-pin DIP socket
Lithium cell electrically disconnects from
exposed pins upon command
Battery isolation ensures full capacity after
shipping and handling
Lithium cell automatically reconnects when
V_CC is applied
Recessed pins prevent bending
V_CC fail signal interrupts processor or write-
protects memory
Exhausted energy cell warning signal
Low profile permits mounting on 0.5-inch
printed circuit board centers
Mates directly with DS1212 Nonvolatile
Controller to back up 16 SRAMs
Uninterruptible supply for CMOS and
portable devices
DS1260
Smart Battery
PIN ASSIGNMENT
1 16
2 15
3 14
4 13
5 12
6
11
7 10
8
9
See Mech. Drawings Section
PIN DESCRIPTION
Pins 1, 2, 4, 7, 9, 10 and 14 are No-Connects
Pin 3 is Battery Fail ( BF )
Pin 5 is Battery Out (BAT)
Pin 6 is RESET (RST) Input
Pin 8 is Ground
Pin 11 is Power Fail ( PF )
Pins 12 and 13 are RAM Supply (V_CCO)
Pins 15 and 16 are +5V Supply (V_CCI)
DESCRIPTION
The DS1260 SmartBattery is a low-cost, backup energy supply for portable and nonvolatile electronic
equipment. A lithium energy source of up to 1 amp hour can supply power to CMOS electronic circuits
when primary power is lost through an intelligent and efficient switch. When power is supplied from the
lithium power source, the power fail signal is held low to warn electronic (RESET) circuits of the power
status. Energy loss during shipping and handling is avoided by pulsing RESET, thereby causing the
backup energy source to be isolated from the exposed pins. The DS1260 can be plugged into a standard
16-pin, low-cost DIP socket, allowing for proven interconnect and simple replacement if the energy has
been exhausted.
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