M40SZ100WMH6E STMICROELECTRONICS [STMicroelectronics], M40SZ100WMH6E Datasheet
M40SZ100WMH6E
Related parts for M40SZ100WMH6E
M40SZ100WMH6E Summary of contents
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Features ■ Convert low power SRAMs into NVRAMs ■ operating voltage ■ Precision power monitoring and power switching circuitry ■ Automatic write-protection when V tolerance ■ Choice of supply voltages and power-fail deselect voltages: – ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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M40SZ100Y, M40SZ100W List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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M40SZ100Y, M40SZ100W 1 Description The M40SZ100Y/W NVRAM controller 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 CC When an invalid V inactive to write protect ...
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Description Table 1. Signal names E E CON RST RSTIN BL V OUT V CC (1) V BAT PFI PFO For SO16 only. Figure 2. SOIC16 connections 6/24 Chip enable input Conditioned chip enable output Reset ...
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M40SZ100Y, M40SZ100W Figure 3. SOIC28 connections Figure 4. Block diagram BAT RSTIN E PFI 1.25V 1. Open drain output ...
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Description Figure 5. Hardware hookup Unregulated V IN Voltage User supplied for the 16-pin package 8/24 3.0V, 3. Regulator 0.1µF M40SZ100Y M40SZ100W E From Microprocessor RSTIN PFI V SS (1) V ...
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M40SZ100Y, M40SZ100W 2 Operation The M40SZ100Y/W, as shown 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 configured like this, however many fast ...
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Operation Caution: Take care to avoid inadvertent discharge through V attached. For a further more detailed review of lifetime calculations, please see application note AN1012. Figure 6. Power down timing PFD (max) V PFD V PFD (min) ...
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M40SZ100Y, M40SZ100W Figure 7. Power up timing PFD (max) V PFD V PFD (min tRB E V OHB E CON RST PFO Table 2. Power down/up AC characteristics Symbol ( (max ...
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Operation 2.2 Power-on reset output All microprocessors have a reset input which forces them to a known state when starting. The M40SZ100Y/W has a reset output (RST) pin which is guaranteed to be low by V (see Table 7 on ...
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M40SZ100Y, M40SZ100W If a battery low is generated during a power-up sequence, this indicates that the battery is below 2.5 V and may not be able to maintain data integrity in the SRAM. Data should be considered suspect, and verified ...
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Operation Figure 9. Supply voltage protection 14/ 0.1µF DEVICE V SS Doc ID 7528 Rev 3 M40SZ100Y, M40SZ100W AI00622 ...
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M40SZ100Y, M40SZ100W 3 Maximum ratings 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 ...
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DC and AC parameters 4 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 ...
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M40SZ100Y, M40SZ100W Table 7. DC characteristics Sym Parameter I Supply current CC Data retention mode I (2) CCDR current Input leakage current (3) I Input leakage current LI (PFI) (4) I Output leakage current LO ( current (active) ...
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Package mechanical data 5 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...
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M40SZ100Y, M40SZ100W Figure 13. SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT, package outline B Note: Drawing is not to scale. Table 9. SOH28 – 28-lead plastic small outline, battery SNAPHAT, pack. mech. data Symbol ...
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Package mechanical data Figure 14. SH – 4-pin SNAPHAT housing for 48 mAh battery, package outline Note: Drawing is not to scale. Table 10. SH – 4-pin SNAPHAT housing for 48 mAh battery, package mechanical data Symbol ...
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M40SZ100Y, M40SZ100W Figure 15. SH – 4-pin SNAPHAT housing for 120 mAh battery, package outline Note: Drawing is not to scale. Table 11. SH – 4-pin SNAPHAT housing for 120 mAh battery, package mechanical data Symbol ...
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Part numbering 6 Part numbering Table 12. Ordering information scheme Example: Device type M40SZ Supply voltage and write protect voltage (1) 100Y = V = 4 100W = V = 2 ...
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M40SZ100Y, M40SZ100W 7 Revision history Table 14. Document revision history Date Revision Dec-2001 13-May-2002 01-Aug-2002 15-Sep-2003 20-Nov-2007 25-Oct-2010 1.0 First issue 1.1 Modify reflow time and temperature footnote 1.2 Add marketing status (cover page; Remove reference to M68xxx (obsolete) part ...
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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 ...