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M40Z300 Folha de dados(PDF) 1 Page - STMicroelectronics |
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M40Z300 Folha de dados(HTML) 1 Page - STMicroelectronics |
1 / 16 page 1/16 March 2000 M40Z300 M40Z300W NVRAM CONTROLLER for up to EIGHT LPSRAM s CONVERT LOW POWER SRAMs into NVRAMs s PRECISION POWER MONITORING and POWER SWITCHING CIRCUITRY s AUTOMATIC WRITE-PROTECTION when VCC is OUT-OF-TOLERANCE s TWO INPUT DECODER ALLOWS CONTROL for up to 8 SRAMs (with 2 devices active in parallel) s CHOICE of SUPPLY VOLTAGES and POWER-FAIL DESELECT VOLTAGES: – M40Z300: VCC = 4.5V to 5.5V THS = VSS 4.5V ≤ VPFD ≤ 4.75V THS = VOUT 4.2V ≤ VPFD ≤ 4.5V – M40Z300W: VCC = 3.0V to 3.6V THS = VSS 2.8V ≤ VPFD ≤ 3.0V VCC = 2.7V to 3.3V THS = VOUT 2.5 ≤ VPFD ≤ 2.7V s RESET OUTPUT (RST) for POWER ON RESET s LESS THAN 12ns CHIP ENABLE ACCESS PROPAGATION DELAY (for 5.0V device) s PACKAGING INCLUDES a 28-LEAD SOIC and SNAPHAT® TOP, or a 16-LEAD SOIC (to be Ordered Separately) s SOIC PACKAGE PROVIDES DIRECT CONNECTION for a SNAPHAT TOP which CONTAINS the BATTERY s BATTERY LOW PIN (BL) DESCRIPTION The M40Z300/W NVRAM Controller is a self-con- tained device which converts a standard low-pow- er SRAM into a non-volatile memory. A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition. Figure 1. Logic Diagram AI02242 THS VCC M40Z300 M40Z300W BL VSS E VOUT B A E1CON E2CON E3CON E4CON RST B+(1) B–(1) NOTE: 1. For 16-pin SOIC package only. 28 1 SOH28 (MH) SNAPHAT (SH) Battery 16 1 SO16 (MQ) |
Nº de peça semelhante - M40Z300 |
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Descrição semelhante - M40Z300 |
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