M40SZ100 ST Microelectronics, M40SZ100 Datasheet
M40SZ100
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M40SZ100 Summary of contents
Page 1
... FEATURES SUMMARY CONVERT LOW POWER SRAMs INTO NVRAMs OPERATING VOLTAGE PRECISION POWER MONITORING and POWER SWITCHING CIRCUITRY AUTOMATIC WRITE-PROTECTION WHEN V IS OUT-OF-TOLERANCE CC CHOICE OF SUPPLY VOLTAGES and POWER-FAIL DESELECT VOLTAGES: – M40SZ100Y 4.5 to 5.5V; CC 4.20V V 4.50V PFD – M40SZ100W 2.7 to 3.6V; CC 2.55V V 2 ...
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... 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 MAXIMUM RATING Absolute Maximum Ratings (Table 2 AND AC PARAMETERS and AC Measurement Conditions (Table 3 Testing Load Circuit (Figure 8 ...
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... SUMMARY DESCRIPTION The M40SZ100Y/W NVRAM Controller is a self- contained device which converts a standard low- power SRAM into a non-volatile memory. A preci- sion voltage reference and comparator monitors the V input for an out-of-tolerance condition. CC When an invalid V condition occurs, the condi- CC tioned chip enable output (E CON to write protect the stored data in the SRAM ...
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... M40SZ100Y, M40SZ100W Figure 4. SOIC16 Connections RST M40SZ100Y M40SZ100W 5 RSTIN PFO 6 V BAT Note Not Use Figure 6. Block Diagram BAT RSTIN E PFI 1.25V Note: Open drain output 4/19 Figure 5. SOIC28 Connections OUT 13 NC ...
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... Exposure to Absolute Maximum Rat- ing conditions for extended periods may affect de- vice STMicroelectronics SURE Program and other rel- evant quality documents. Parameter SNAPHAT Off) CC SOIC M40SZ100Y M40SZ100W M40SZ100Y, M40SZ100W V OUT V CC 1Mb or 4Mb 0.1 F LPSRAM E E CON PFO To Microprocessor NMI RST To Microprocessor Reset ...
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... Input Pulse Voltages Input and Output Timing Ref. Voltages Figure 8. AC Testing Load Circuit 333 DEVICE UNDER TEST 100pF or 50pF C L includes JIG capacitance Note 100pF for M40SZ100Y and 50pF for M40SZ100W. Table 4. Capacitance Symbol C Input Capacitance IN (3) Output Capacitance C OUT Note: 1. Sampled only, not 100% tested 25° ...
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... V = 3V(V) CC PFI Rising 20 2.5 = –40 to 85° 2.7 to 3.6V or 4.5 to 5.5V(except where noted open. through 100k resistor. CC specification (3V or 5V). CC (max) may be considered V – 0.5V. CC M40SZ100Y, M40SZ100W M40SZ100W Max Min Typ Max 1 0.5 200 50 200 ±1 ±1 25 – ±1 ±1 175 ...
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... M40SZ100Y, M40SZ100W OPERATION The M40SZ100Y/W, as shown in Figure 7, page 5, can control one (two, if placed in parallel) standard low-power SRAM. This SRAM must be configured to have the chip enable input disable all other input signals. Most slow, low-power SRAMs are config- ured like this, however many fast SRAMs are not. ...
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... Figure 10. Power Down Timing PFD (max) V PFD V PFD (min CON RST PFO VALID tFB tWPT V OHB M40SZ100Y, M40SZ100W AI03936 9/19 ...
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... M40SZ100Y, M40SZ100W Figure 11. Power Up Timing PFD (max) V PFD V PFD (min tRB E V OHB E CON RST PFO Table 6. Power Down/Up AC Characteristics Symbol (2) V (max PFD PFD F (3) V (min PFD PFI to PFO Propagation Delay PFD t V (min ...
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... Power-on Reset Output All microprocessors have a reset input which forc- es them to a known state when starting. The M40SZ100Y/W has a reset output (RST) pin which is guaranteed to be low by V page 7). This signal is an open drain configuration. An appropriate pull-up resistor to V chosen to control the rise time. This signal will be ...
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... PFI falls below V several milliseconds before the PFI regulated V input to the M40SZ100Y/W or the CC microprocessor drops below the minimum operat- ing voltage. During battery back-up, the power-fail comparator turns off and PFO goes (or remains) low. This oc- ...
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... Min. Max. 1.75 0.10 0.25 1.60 0.35 0.46 0.19 0.25 9.80 10.00 3.80 4.00 – – 5.80 6.20 0.40 1.27 0° 8° 16 0.10 M40SZ100Y, M40SZ100W inches Typ. Min. Max. 0.069 0.004 0.010 0.063 0.014 0.018 0.007 0.010 0.386 0.394 0.150 0.158 0.050 – 0.228 0.244 0.016 0.050 0° 16 0.004 – 8° 13/19 ...
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... M40SZ100Y, M40SZ100W Figure 15. SOH28 – 28-lead Plastic Small Outline, 4-socket battery SNAPHAT, Package Outline SOH-A Note: Drawing is not to scale. Table 9. SOH28 – 28-lead Plastic Small Outline, battery SNAPHAT, Package Mechanical Data Symbol Typ 1. ...
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... Table 10. SH – 4-pin SNAPHAT Housing for 48mAh Battery, Package Mechanical Data Symbol Typ Min Max 9.78 6.73 7.24 6.48 6.99 0.38 0.46 0.56 21.21 21.84 14.22 14.99 15.55 15.95 3.20 3.61 2.03 2.29 M40SZ100Y, M40SZ100W SHZP-A inches Typ Min 0.385 0.265 0.285 0.255 0.275 0.015 0.018 0.022 0.835 0.860 0.560 0.590 0.612 0.628 0.126 0.142 0.080 0.090 A2 Max 15/19 ...
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... M40SZ100Y, M40SZ100W Figure 17. SH – 4-pin SNAPHAT Housing for 120mAh Battery, Package Outline Note: Drawing is not to scale. Table 11. SH – 4-pin SNAPHAT Housing for 120mAh Battery, Package Mechanical Data Symbol Typ 16/ Min Max 10 ...
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... ST Sales Office nearest to you. ® Table 13. SNAPHAT Battery Table Part Number M4Z28-BR00SH SNAPHAT Housing for 48mAh Battery M4Z32-BR00SH SNAPHAT Housing for 120mAh Battery M40SZ 100Y ® ) which is ordered separately under the part number Description M40SZ100Y, M40SZ100W Package SH SH 17/19 ...
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... M40SZ100Y, M40SZ100W REVISION HISTORY Table 14. Document Revision History Date Rev. # December 2001 1.0 First Issue 13-May-02 1.1 Modify reflow time and temperature footnote (Table 2) 01-Aug-02 1.2 Add marketing status (Figure 2; Table 12) 15-Sep-03 1.3 Remove reference to M68xxx (obsolete) part (Figure 7); update disclaimer 18/19 Revision Details ...
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