M48T512V datasheet(1/21 Pages) STMICROELECTRONICS

Part #	M48T512V

Description	3.3V-5V 4 Mbit 512Kb x8 TIMEKEEPER SRAM

PDF	21 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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February 2005

M48T512Y

M48T512V*

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

* Contact local ST sales office for availability of 3.3V version.

FEATURES SUMMARY

■

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 5.5V

4.2V

≤ VPFD ≤ 4.5V

–

M48T512V*: VCC = 3.0 to 3.6V

2.7V

≤ VPFD ≤ 3.0V

■

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 512K x 8 SRAMS

■

SELF-CONTAINED BATTERY AND

CRYSTAL IN DIP PACKAGE

Figure 1. 32-pin, PMDIP Module

32

1

PMDIP32 (PM)

Module

Similar Part No. - M48T512V

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