M40Z300MH1F STMICROELECTRONICS [STMicroelectronics], M40Z300MH1F Datasheet
M40Z300MH1F
Related parts for M40Z300MH1F
M40Z300MH1F Summary of contents
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NVRAM supervisor for LPSRAMs Features ■ Converts low power SRAM into NVRAMs ■ Precision power monitoring and power switching circuitry ■ Automatic WRITE-protection when V of-tolerance ■ Two-input decoder allows control for ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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M40Z300, M40Z300W 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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M40Z300, M40Z300W 1 Description The M40Z300/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 CC When an invalid are forced ...
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Description Figure 1. Logic diagram 1. For 16-pin SOIC package only. Table 1. Signal names THS CON CON A, B RST BL V OUT – For M40Z300W, ...
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M40Z300, M40Z300W Figure 2. 28-pin SOIC connections Figure 3. M40Z300 16-pin SOIC connections Figure 4. M40Z300W 16-pin SOIC connections 1. For M40Z300W, B– must be connected to the negative battery terminal only (not to pin OUT 1 ...
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Description Figure 5. Hardware hookup 3.0V, 3. OUT 0.1µF M40Z300 M40Z300W E1 CON A E2 CON B E3 CON E E4 CON Threshold THS RST the second chip enable pin ...
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M40Z300, M40Z300W 2 Operation The M40Z300/W, as shown in parallel) standard low-power 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 ...
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Operation 2.1 Two to four decode The M40Z300/W includes a 2 input (A, B) decoder which allows the control independent SRAMs. The truth table for these inputs is shown in Table 2. Truth table Inputs E ...
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M40Z300, M40Z300W The data retention current value of the SRAMs can then be added to the I M40Z300/W to determine the total current requirements for data retention. The available battery capacity for the SNAPHAT determine the amount of data retention ...
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Operation 2.5 V noise and negative going transients CC I transients, including those produced by output switching, can produce voltage CC fluctuations, resulting in spikes on the V capacitors are used to store energy which stabilizes the V bypass capacitors ...
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M40Z300, M40Z300W 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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M40Z300, M40Z300W Table 6. DC characteristics Sym Parameter (2) I Input leakage current LI I Supply current CC V Input low voltage IL V Input high voltage IH Output low voltage V Output low voltage OL (3) (open drain) V ...
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DC and AC parameters Figure 9. Power-down timing PFD (max) V PFD V PFD (min CON - E4 CON RST Figure 10. Power-up timing PFD (max) V PFD V ...
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M40Z300, M40Z300W Table 7. Power down/up mode AC characteristics Symbol ( (max PFD ( (min PFD t V (min PFD t Chip enable propagation delay low EDL ...
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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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M40Z300, M40Z300W Figure 11. SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT, package outline B Note: Drawing is not to scale. Table 8. SOH28 – 28-lead plastic small outline, battery SNAPHAT, package mechanical data Symbol ...
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Package mechanical data Figure 12. SH – 4-pin SNAPHAT housing for 48 mAh battery, package outline Note: Drawing is not to scale. Table 9. SH – 4-pin SNAPHAT housing for 48 mAh battery, package mechanical data Symbol ...
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M40Z300, M40Z300W Figure 13. SH – 4-pin SNAPHAT housing for 120mAh battery, package outline Note: Drawing is not to scale. Table 10. SH – 4-pin SNAPHAT housing for 120 mAh battery, package mechanical data Symbol ...
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Package mechanical data Figure 14. SO16 – 16-lead plastic small outline, 150 mils body width, package outline Note: Drawing is not to scale. Table 11. SO16 – 16-lead plastic small outline, 150 mils body width, package mechanical data Symbol A ...
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M40Z300, M40Z300W 6 Part numbering Table 12. Ordering information example Example: Device type M40Z Supply and write protect voltage (1) 300 = V = 4 4.5 V ≤ V THS = 4.2 ...
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Revision history 7 Revision history Table 14. Document revision history Date Revision Mar-1999 08-Mar-2000 22-Sep-2000 23-Feb-2001 30-May-2001 10-Jul-2001 01-Aug-2001 15-Jan-2002 13-May-2002 31-Oct-2003 04-Nov-2003 23-Feb-2005 05-Nov-2007 19-Oct-2010 24/25 1.0 First issue Document layout changed; SO16 package added; battery capacity 1.1 changed ...
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M40Z300, M40Z300W 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 ...