M40SZ100Y_10 Datasheet, PDF (1/24 Pages) STMicroelectronics – 5 V or 3 V NVRAM supervisor for LPSRAM

M40SZ100Y
M40SZ100W
5 V or 3 V NVRAM supervisor for LPSRAM
Features
■ Convert low power SRAMs into NVRAMs
■ 5 V or 3 V operating voltage
■ Precision power monitoring and power
switching circuitry
■ Automatic write-protection when V_CC is out-of-
tolerance
■ Choice of supply voltages and power-fail
deselect voltages:
– M40SZ100Y: V_CC = 4.5 to 5.5 V;
4.20 V ≤ V_PFD ≤ 4.50 V
(contact local ST sales office for
availability)
– M40SZ100W: V_CC = 2.7 to 3.6 V;
2.55 V ≤ V_PFD ≤ 2.70 V
■ Reset output (RST) for power on reset
■ 1.25 V reference (for PFI/PFO)
■ Less than 10 ns chip enable access
propagation delay (at 5 V)
■ Optional packaging includes a 28-lead SOIC
and SNAPHAT^® top (to be ordered separately)
■ 28-lead SOIC package provides direct
connection for a SNAPHAT top which contains
the battery (contact local ST sales office for
availability)
■ Battery low pin (BL)
■ RoHS compliant
– Lead-free second level interconnect
16
1
SO16 (MQ)
SNAPHAT (SH) battery
28
1
SOH28 (MH)
October 2010
Doc ID 7528 Rev 3
1/24
www.st.com
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