M40SZ100Y

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.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...