M48Z02-70PC1 STMicroelectronics, M48Z02-70PC1 Datasheet
M48Z02-70PC1
Specifications of M48Z02-70PC1
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M48Z02-70PC1 Summary of contents
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... READ cycle time equals WRITE cycle time ■ Automatic power-fail chip deselect and WRITE protection ■ WRITE protect voltages (V = Power-fail deselect voltage): PFD – M48Z02 4. 4.5 V ≤ V ≤ 4.75 V PFD – M48Z12 4 4.2 V ≤ V ≤ 4.5 V PFD ■ ...
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... Operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 READ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 WRITE mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Data retention mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.4 V noise and negative going transients . . . . . . . . . . . . . . . . . . . . . . . . . Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7 Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2/22 Doc ID 2420 Rev 8 M48Z02, M48Z12 ...
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... M48Z02, M48Z12 List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 2. Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 3. READ mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 4. WRITE mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 5. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 6. Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 7. Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 8. DC characteristics Table 9. Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 10. Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 11. PCDIP24 – ...
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... Figure 8. Supply voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. AC testing load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 10. Power down/up mode AC waveforms Figure 11. PCDIP24 – 24-pin plastic DIP, battery CAPHAT™, package outline . . . . . . . . . . . . . . . . . 17 Figure 12. Shipping tube dimensions for PCDIP24 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 13. Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4/22 Doc ID 2420 Rev 8 M48Z02, M48Z12 ...
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... The M48Z02/ non-volatile pin and function equivalent to any JEDEC standard SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed ...
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... Description Figure 2. DIP connections Figure 3. Block diagram LITHIUM CELL 6/ M48Z02 19 M48Z12 DQ0 9 16 DQ1 DQ2 POWER VOLTAGE SENSE AND V PFD SWITCHING CIRCUITRY V CC Doc ID 2420 Rev 8 M48Z02, M48Z12 A10 E DQ7 DQ6 DQ5 DQ4 DQ3 A0-A10 DQ0-DQ7 SRAM ARRAY AI01187 AI01255 ...
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... SO 2.1 READ mode The M48Z02/ the READ mode whenever W (WRITE enable) is high and E (chip enable) is low. The device architecture allows ripple-through access of data from eight of 16,384 locations in the static storage array. Thus, the unique address specified by the 11 Address Inputs defines which one of the 2,048 bytes of data accessed. Valid data will be available at the data I/O pins within address access time (t address input signal is stable, providing that the E and G access times are also satisfied ...
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... WRITE mode The M48Z02/ the WRITE mode whenever W and E are active. The start of a WRITE is referenced from the latter occurring falling edge WRITE is terminated by the earlier rising edge The addresses must be held valid throughout the cycle must return high for a minimum the initiation of another READ or WRITE cycle ...
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... M48Z02, M48Z12 Figure 5. WRITE enable controlled, WRITE AC waveform A0-A10 E W DQ0-DQ7 Figure 6. Chip enable controlled, WRITE AC waveforms A0-A10 tAVEL E W DQ0-DQ7 tAVAV VALID tAVWH tAVEL tWLWH tAVWL tWLQZ tDVWH tAVAV VALID tAVEH tELEH tAVWL DATA INPUT tDVEH Doc ID 2420 Rev 8 Operation modes ...
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... For more information on a battery storage life refer to the application note AN1012. 10/22 (1) Min °C or – ° falls within the V CC PFD . The M48Z02/12 may respond to transient noise spikes rises, the battery voltage is checked. If the voltage Doc ID 2420 Rev 8 M48Z02, M48Z12 M48Z02/M48Z12 –70 –150 –200 Max Min Max Min 150 200 120 ...
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... M48Z02, M48Z12 Figure 7. Checking the BOK flag status POWER-UP READ DATA AT ANY ADDRESS WRITE DATA COMPLEMENT BACK TO SAME ADDRESS READ DATA AT SAME ADDRESS AGAIN IS DATA NO (BATTERY LOW) COMPLEMENT OF FIRST READ? NOTIFY SYSTEM (BATTERY OK) YES OF LOW BATTERY (DATA MAY BE CORRUPTED) WRITE ORIGINAL ...
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... Schottky diode 1N5817 is recommended for through hole and MBRS120T3 is recommended for surface mount. Figure 8. Supply voltage protection 12/22 bus. These transients can be reduced that drive it to values below (cathode connected 0.1µF DEVICE V SS Doc ID 2420 Rev 8 M48Z02, M48Z12 bus. The energy stored in the by as much anode AI02169 ...
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... M48Z02, M48Z12 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 conditions above those indicated in the operating sections of this specification is not implied ...
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... Designers should check that the operating Parameter ) ) Grade DEVICE UNDER TEST 1kΩ includes JIG capacitance (1)(2) Parameter Doc ID 2420 Rev 8 M48Z02, M48Z12 M48Z02 M48Z12 4.75 to 5.5 4 100 100 ≤ 5 ≤ 1.5 1.5 1.8kΩ OUT 100pF Min ...
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... M48Z02, M48Z12 Table 8. DC characteristics Symbol Parameter I Input leakage current LI (2) I Output leakage current LO I Supply current CC I Supply current (standby) TTL CC1 I Supply current (standby) CMOS CC2 V Input low voltage IL V Input high voltage IH V Output low voltage OL V Output high voltage OH 1 ...
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... F passes V (min). CC PFD fall time of less than t may cause corruption of RAM data. FB (1)(2) Parameter M48Z02 M48Z12 . ° Doc ID 2420 Rev 8 M48Z02, M48Z12 Min Max 0 - 300 - 4. 4.5 to 5.5 V (except where CC Min Typ Max 4 ...
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... M48Z02, M48Z12 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 at: www.st.com. ® ECOPACK trademark. Figure 11. PCDIP24 – 24-pin plastic DIP, battery CAPHAT™, package outline Note: Drawing is not to scale ...
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... Package mechanical data Figure 12. Shipping tube dimensions for PCDIP24 package Note: All dimensions are in inches. 18/22 Doc ID 2420 Rev 8 M48Z02, M48Z12 1011292_E ...
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... 4 Speed – (M48Z02/12) –150 = 150 ns (M48Z02/12) –200 = 200 ns (M48Z02/12) Package PC = PCDIP24 Temperature range 70°C 1. Not recommended for new design. Contact local ST sales office for availability. For a list of available options (e.g., speed, package) or for further information on any aspect of this device, please contact the ST sales office nearest you. ...
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... Figure 13. Recycling symbols This product contains a non-rechargeable lithium (lithium carbon monofluoride chemistry) button cell battery fully encapsulated in the final product. Recycle or dispose of batteries in accordance with the battery manufacturer's instructions and local/national disposal and recycling regulations. 20/22 Doc ID 2420 Rev 8 M48Z02, M48Z12 ...
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... M48Z02, M48Z12 8 Revision history Table 13. Document revision history Date Revision May-1999 09-Jul-2001 17-Dec-2001 20-May-2002 01-Apr-2003 22-Apr-2003 12-Dec-2005 02-Nov-2007 03-Dec-2008 27-May-2010 21-Jan-2011 1 First issue Reformatted; temperature information added to tables 10); Figure updated 2.1 Remove references to “clock” in document 2.2 Updated V noise and negative going transients text ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 22/22 Please Read Carefully: © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 2420 Rev 8 M48Z02, M48Z12 ...