5V or 3V NVRAM SUPERVISOR FOR LPSRAM
M40SZ100Y M40SZ100W
5V or 3V NVRAM SUPERVISOR FOR LPSRAM
FEATURES SUMMARY s CONVERT LOW POWER SRAMs INTO NVRAMs
s s
Fig...
Description
M40SZ100Y M40SZ100W
5V or 3V NVRAM SUPERVISOR FOR LPSRAM
FEATURES SUMMARY s CONVERT LOW POWER SRAMs INTO NVRAMs
s s
Figure 1. 16-pin SOIC Package
5V OR 3V OPERATING VOLTAGE PRECISION POWER MONITORING and POWER SWITCHING CIRCUITRY AUTOMATIC WRITE-PROTECTION WHEN VCC IS OUT-OF-TOLERANCE 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 RESET OUTPUT (RST) FOR POWER ON RESET 1.25V REFERENCE (for PFI/PFO) LESS THAN 10ns CHIP ENABLE ACCESS PROPAGATION DELAY (at 5V) OPTIONAL PACKAGING INCLUDES A 28LEAD SOIC and SNAPHAT® TOP (to be ordered separately) 28-LEAD SOIC PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT TOP WHICH CONTAINS THE BATTERY BATTERY LOW PIN (BL) Figure 2. 28-pin SOIC Package*
SNAPHAT (SH) Battery
16 1
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SO16 (MQ)
s
s
s s
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28 1
s
SOH28 (MH)
s
* Contact Local Sales Office
September 2003
Rev. 1.3
1/19
M40SZ100Y, M40SZ100W
TABLE OF CONTENTS SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Logic Diagram (Figure 3.) . . . . . . . Signal Names (Table 1.) . . . . . . . . SOIC16 Connections (Figure 4.) . . SOIC28 Connections (Figure 5.) . . Block Diagram (Figure 6.) . . . . . . . Hardware Hookup (Figure 7.) . . . . ....... ....... ....... ....... ....... ....... ...... ...... ...... ...... ...... ...... ....... ....... ....... ....... ....... ....... ........
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