M40Z111WMH6F STMICROELECTRONICS [STMicroelectronics], M40Z111WMH6F Datasheet
M40Z111WMH6F
Related parts for M40Z111WMH6F
M40Z111WMH6F Summary of contents
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NVRAM supervisor for up to two LPSRAMs Features ■ Convert low power SRAMs into NVRAMs ■ Precision power monitoring and power switching circuitry ■ Automatic write-protection when V tolerance ■ Choice of supply voltages and power-fail deselect ...
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Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Description The M40Z111/W NVRAM supervisor is a self-contained device which converts a standard low-power SRAM into a non-volatile memory. A precision voltage reference and comparator monitors the V condition. When an invalid V CC inactive to write-protect the stored ...
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Table 1. Signal names THS E E CON V OUT Figure 2. SOIC28 connections 6/21 Threshold select input Chip enable input Conditioned chip enable output Supply voltage output Supply voltage Ground Not connected internally V ...
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Figure 3. Hardware hookup 3.0, 3. 1N5817 or 0.1 F MBR5120T3 Thereshold OUT 0.1 F M40Z111/W E CON E THS CMOS SRAM x16 AI02394 7/21 ...
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Operation The M40Z111/W, as shown in SRAMs. These SRAMs must be configured to have the chip enable input disable all other input signals. Most slow, low-power SRAMs are configured like this, however many fast SRAMs are not. During normal ...
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The available battery capacity for the SNAPHAT current to determine the amount of data retention available (see more information on Battery Storage Life refer to the Application Note AN1012. Figure 4. Power down timing PFD (max) V ...
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Table 2. Power down/up AC characteristics Symbol ( (max PFD ( (min PFD t V (min PFD Chip enable propagation ...
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Figure 6. Supply voltage protection 0.1 F DEVICE V SS AI00622 11/21 ...
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Maximum rating Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above ...
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DC and AC parameters This section summarizes the operating and measurement conditions, as well as the DC and AC characteristics of the device. The parameters in the following DC and AC Characteristic tables are derived from tests performed under ...
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Table 6. DC characteristics Sym Parameter I Supply current CC Data retention mode I CCDR current I Input leakage current LI (2) I Output leakage current current (active) OUT1 OUT V current (battery OUT I OUT2 back-up) ...
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Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner ...
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Table 7. SOH28 – 28-lead plastic small outline, battery SNAPHAT, pack. mech. data Symbol Typ 1. 16/21 mm Min Max Typ 3.05 0.05 0.36 2.34 2.69 ...
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Figure 9. 4-pin SNAPHAT housing for 48mAh battery, package outline Note: Drawing is not to scale. Table 8. 4-pin SNAPHAT housing for 48mAh battery, package mechanical data Symbol Typ ...
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Figure 10. 4-pin SNAPHAT housing for 120mAh battery, package outline Note: Drawing is not to scale. Table 9. 4-pin SNAPHAT housing for 120mAh battery, package mechanical data Symbol Typ 18/21 ...
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Part numbering Table 10. Ordering information scheme Example: Device type M40Z Supply voltage and write protect voltage 111 = V = 4.5 to 5.5V THS = V = 4.5 SS THS = V = 4.2 OUT 111W ...
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Revision history Table 12. Document revision history Date Revision Sep-2000 14-Sep-2001 13-May-2002 12-Nov-2007 20/21 1 First Draft Issue Reformatted, TOC added, changed DC Characteristics changed battery, ind. temperature information 2 Figure 9, 10); Corrected SOIC label (Figure 3) 3 ...
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Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...