M48T08-100MH1TR datasheet(1/27 Pages) STMICROELECTRONICS

Part #	M48T08-100MH1TR

Description	CMOS 8K x 8 TIMEKEEPER SRAM

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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December 2005

M48T08

M48T08Y, M48T18

5V, 64 Kbit (8 Kb x8) TIMEKEEPER® SRAM

Rev 7.0

FEATURES SUMMARY

■

INTEGRATED ULTRA LOW POWER SRAM,

REAL TIME CLOCK, POWER-FAIL

CONTROL CIRCUIT, AND BATTERY

■

BYTEWIDE™ RAM-LIKE CLOCK ACCESS

■

BCD CODED YEAR, MONTH, DAY, DATE,

HOURS, MINUTES, and SECONDS

■

TYPICAL CLOCK ACCURACY OF ±1

MINUTE A MONTH, AT 25°C

■

AUTOMATIC POWER-FAIL CHIP

DESELECT AND WRITE PROTECTION

■

WRITE PROTECT VOLTAGES

(VPFD = Power-fail Deselect Voltage):

–

M48T08: VCC = 4.75 to 5.5V

4.5V

≤ VPFD ≤ 4.75V

–

M48T18/T08Y: VCC = 4.5 to 5.5V

4.2V

≤ VPFD ≤ 4.5V

■

SOFTWARE CONTROLLED CLOCK

CALIBRATION FOR HIGH ACCURACY

APPLICATIONS

■

SELF-CONTAINED BATTERY AND

CRYSTAL IN THE CAPHAT™ DIP

PACKAGE

■

PACKAGING INCLUDES A 28-LEAD SOIC

AND SNAPHAT® TOP (to be ordered

separately)

■

SOIC PACKAGE PROVIDES DIRECT

CONNECTION FOR A SNAPHAT TOP

WHICH CONTAINS THE BATTERY AND

CRYSTAL

■

PIN AND FUNCTION COMPATIBLE WITH

DS1643 and JEDEC STANDARD 8K x8

SRAMs

■

RoHS COMPLIANCE

Lead-free components are compliant with the

RoHS Directive.

Figure 1. 28-pin PCDIP, CAPHAT™ Package

Figure 2. 28-pin SOIC Package

28

1

PCDIP28 (PC)

Battery/Crystal

CAPHAT

28

1

SNAPHAT (SH)

Battery/Crystal

SOH28 (MH)

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M48T08-100MH1TR Datasheet(PDF) 1 Page - STMicroelectronics

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