Not recommended for new design

This is information on a product still in production but not recommended for new designs.

June 2011

Doc ID 5747 Rev 7

1/23

1

M48T512Y

M48T512V

5.0 or 3.3 V, 4 Mbit (512 Kbit x 8) TIMEKEEPER® SRAM

Features

■ Integrated ultra low power SRAM, real-time

clock, power-fail control circuit, battery, and

crystal

■ BCD coded year, month, day, date, hours,

minutes, and seconds

■ Automatic power-fail chip deselect and WRITE

protection

■ WRITE protect voltages:

(VPFD = power-fail deselect voltage)

–M48T512Y: VCC = 4.5 to 5.5 V;

4.2 V

≤ VPFD ≤ 4.5 V

–M48T512V: VCC = 3.0 to 3.6 V;

2.7 V

≤ VPFD ≤ 3.0 V

■ Conventional SRAM operation; unlimited

WRITE cycles

■ Software controlled clock calibration for high

accuracy applications

■ 10 years of data retention and clock operation

in the absence of power

■ Pin and function compatible with industry

standard 512 K x 8 SRAMS

■ Self-contained battery and crystal in DIP

package

■ RoHS compliant

– Lead-free second level interconnect

32

1

PMDIP32 module

www.st.com

Obsolete

Product(s)

- Obsolete

Product(s)