M40Z300MH1TR STMICROELECTRONICS [STMicroelectronics], M40Z300MH1TR Datasheet

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M40Z300MH1TR

Manufacturer Part Number

M40Z300MH1TR

Description

5V or 3V NVRAM Supervisor for Up to 8 LPSRAMs

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheet

1.M40Z300MH1TR.pdf (21 pages)

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FEATURES SUMMARY

February 2005

CONVERTS LOW POWER SRAM INTO

NVRAMs

PRECISION POWER MONITORING AND

POWER SWITCHING CIRCUITRY

AUTOMATIC WRITE-PROTECTION WHEN

V

TWO-INPUT DECODER ALLOWS

CONTROL FOR UP TO 8 SRAMs (with 2

devices active in parallel)

CHOICE OF SUPPLY VOLTAGES AND

POWER-FAIL DESELECT VOLTAGES:

–

–

RESET OUTPUT (RST) FOR POWER ON

RESET

BATTERY LOW PIN (BL)

LESS THAN 12ns CHIP ENABLE ACCESS

PROPAGATION DELAY (for 5.0V device)

PACKAGING INCLUDES A 28-LEAD SOIC

AND SNAPHAT

separately), OR A 16-LEAD SOIC

SOIC PACKAGE PROVIDES DIRECT

CONNECTION FOR A SNAPHAT TOP

WHICH CONTAINS THE BATTERY

CC

M40Z300:

V

THS = V

THS = V

M40Z300W:

V

THS = V

V

THS = V

IS OUT-OF-TOLERANCE

CC

CC

CC

= 4.5V to 5.5V

= 3.0V to 3.6V

= 2.7V to 3.3V

SS

OUT

SS

OUT

: 4.5V

: 2.8V

®

: 4.2V

: 2.5

5V or 3V NVRAM Supervisor for Up to 8 LPSRAMs

TOP (to be ordered

V

V

V

PFD

PFD

V

PFD

PFD

4.75V

3.0V

2.7V

4.5V

Figure 1. 16-pin SOIC Package

Figure 2. 28-pin SOIC Package

28

SNAPHAT (SH)

Crystal/Battery

16

SO16 (MQ)

SOH28 (MH)

1

1

M40Z300W

M40Z300

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