M48T08-10MH1 Просмотр технического описания (PDF) - STMicroelectronics

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M48T08-10MH1

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

STMicroelectronics 

M48T08

M48T08Y, M48T18

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

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

28

1

PCDIP28 (PC)

Battery/Crystal

CAPHAT

Figure 2. 28-pin SOIC Package

SNAPHAT (SH)

Battery/Crystal

28

1

SOH28 (MH)

December 2005

Rev 7.0

1/27

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