NVRAM supervisor
M40SZ100Y M40SZ100W
5V or 3V NVRAM SUPERVISOR FOR LPSRAM
FEATURES SUMMARY s CONVERT LOW POWER SRAMs INTO
NVRAMs
s 5V OR...
Description
M40SZ100Y M40SZ100W
5V or 3V NVRAM SUPERVISOR FOR LPSRAM
FEATURES SUMMARY s CONVERT LOW POWER SRAMs INTO
NVRAMs
s 5V OR 3V OPERATING VOLTAGE
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:
– M40SZ100Y: VCC = 4.5 to 5.5V; 4.20V ≤ VPFD ≤ 4.50V
– M40SZ100W: VCC = 2.7 to 3.6V; 2.55V ≤ VPFD ≤ 2.70V
s RESET OUTPUT (RST) FOR POWER ON RESET
s 1.25V REFERENCE (for PFI/PFO)
s LESS THAN 10ns CHIP ENABLE ACCESS PROPAGATION DELAY (at 5V)
s OPTIONAL PACKAGING INCLUDES A 28LEAD SOIC and SNAPHAT® TOP (to be ordered separately)
s 28-LEAD SOIC PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT TOP WHICH CONTAINS THE BATTERY
s BATTERY LOW PIN (BL)
Figure 1. 16-pin SOIC Package
16 1
SO16 (MQ)
Figure 2. 28-pin SOIC Package*
SNAPHAT (SH) Battery
28 1
SOH28 (MH)
* Contact Local Sales Office
September 2003
Rev. 1.3
1/19
M40SZ100Y, M40SZ100W
TABLE OF CONTENTS
SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Logic Diagram (Figure 3.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Signal Names (Table 1.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SOIC16 Connections (Figure 4.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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