M40Z111(2002) データシートの表示（PDF） - STMicroelectronics

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M40Z111
(Rev.:2002)

5V OR 3V NVRAM SUPERVISOR FOR UP TO TWO LPSRAMs

STMicroelectronics 

M40Z111

M40Z111W

5V OR 3V NVRAM SUPERVISOR FOR UP TO TWO LPSRAMs

FEATURES SUMMARY

s CONVERT LOW POWER SRAMs INTO

NVRAMs

s PRECISION POWER MONITORING and

POWER SWITCHING CIRCUITRY

s AUTOMATIC WRITE-PROTECTION WHEN

VCC IS OUT-OF-TOLERANCE

s CHOICE OF SUPPLY VOLTAGES and

POWER-FAIL DESELECT VOLTAGES:

– M40Z111: VCC = 4.5 to 5.5V

THS = VSS; 4.5 ≤ VPFD ≤ 4.75V

THS = VOUT; 4.2 ≤ VPFD ≤ 4.5V

– M40Z111W: VCC = 3.0 to 3.6V

THS = VSS; 2.8 ≤ VPFD ≤ 3.0V

VCC = 2.7 to 3.3V

THS = VOUT; 2.5 ≤ VPFD ≤ 2.7V

s LESS THAN 15ns CHIP ENABLE ACCESS

PROPAGATION DELAY (for 5.0V device)

s PACKAGING INCLUDES A 28-LEAD SOIC and

SNAPHAT® TOP (to be ordered separately)

s SOIC PACKAGE PROVIDES DIRECT

CONNECTION FOR A SNAPHAT TOP WHICH

CONTAINS THE BATTERY

Figure 1. 28-pin SOIC Package

SNAPHAT (SH)

Battery

28

1

SOH28 (MH)

May 2002

1/15

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