DS1248/DS1248P

1024K NV SRAM with Phantom Clock

www.artschip.com

2

ORDERING INFORMATION

PART

TEMP RANGE

Vcc RANGE

PIN-PACKAGE

TOP MARK***

DS1248Y-70

0

℃ to +70℃

5V ±10%

32 EDIP

DS1248Y-70

DS1248Y-70IND

-40

℃ to +85℃

5V ±10%

32 EDIP

DS1248Y-70 IND

DS1248Y-100IND

-40

℃ to +85℃

5V±10%

32 EDIP

DS1248Y-100 IND

DS1248YP-70

0

℃ to +70℃

5V±10%

34 PowerCap*

DS1248YP-70

DS1248W-120

0

℃ to +70℃

3.3V±10%

32 EDIP

DS1248W-120

DS1248W-120IND

-40

℃ to +85℃

3.3V ±10%

32 EDIP

DS1248W-120 IND

DS1248WP-120

0

℃ to +70℃

3.3V±10%

34 PowerCap*

DS1248WP-120

DS1248WP-120IND

-40

℃ to +85℃

3.3V±10%

34 PowerCap*

DS1248WP-120**

DS1248Y-70+

0

℃ to +70℃

5V ±10%

32 EDIP

DS1248Y-70

DS1248Y-70IND+

-40

℃ to +85℃

5V ±10%

32 EDIP

DS1248Y-70 IND

DS1248Y-100IND+

-40

℃ to +85℃

5V ±10%

32 EDIP

DS1248W-100 IND

DS1248YP-70+

0

℃ to +70℃

5V ±10%

34 PowerCap*

DS1248Y-70

DS1248W-120+

0

℃ to +70℃

3.3V±10%

32 EDIP

DS1248W-120

DS1248W-120IND+

-40

℃ to +85℃

3.3V±10%

32 EDIP

DS1248W-120 IND

DS1248W-120+

0

℃ to +70℃

3.3V±10%

34 PowerCap*

DS1248W-120

DS1248W-120IND+

-40

℃ to +85℃

3.3V±10%

34 PowerCap*

DS1248WP-120**

*DS9034PCX (PowerCap) Required, order separately.

**An “IND” is located in the lower right-hand corner of the label.

***A ‘+’ indicates lead-free. The top mark will include a “+” symbol on lead-free devices.

DETAILED DESCRIPTION

The DS1248 1024k NV SRAM with phantom clock is a fully static, nonvolatile RAM (organized as 128k words by 8 bits) with a

built-in real-time clock. The DS1248 has a self-contained lithium energy source and control circuitry, which constantly monitors

Vcc for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and

writes protection is unconditionally enabled to prevent garbled data in both the memory and real-time clock.

PACKAGES

The DS1248 is available in two packages:32-pin DIP and 34-pin PowerCap module. The 32-pin DIP style module integrates the

crystal, lithium energy source, and silicon in one package. The 34-pin PowerCap module board is designed with contacts for

connection to a separate PowerCap (DS9034PCX) that contains the crystal and battery. This design allows the PowerCap to be

mounted on top of the DS1248P after completion of the surface mount process. Mounting the PowerCap after the surface mount

process prevents damage to the crystal and battery because of the high temperatures required for solder reflow. The PowerCap is

keyed to prevent reverse insertion. The PowerCap module board and PowerCap are ordered separately and shipped in separate

containers.