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M48Z35AV-70MH1 Datasheet(PDF) 3 Page - STMicroelectronics |
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M48Z35AV-70MH1 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 16 page 3/16 M48Z35AY, M48Z35AV The M48Z35AY/35AV is a non-volatile pin and function equivalent to any JEDEC standard 32K x8 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. The 28 pin 600mil DIP CAPHAT™ houses the M48Z35AY/35AV silicon with a long life lithium button cell in a single pack- age. The 28 pin 330mil SOIC provides sockets with gold plated contacts at both ends for direct con- nection to a separate SNAPHAT housing contain- ing the battery. The unique design allows the SNAPHAT battery package to be mounted on top of the SOIC package after the completion of the surface mount process. Insertion of the SNAPHAT housing after reflow prevents potential battery damage due to the high temperatures required for device surface-mounting. The SNAPHAT housing is keyed to prevent reverse insertion. Table 3. Operating Modes (1) Note: 1. X = VIH or VIL; VSO = Battery Back-up Switchover Voltage. 2. See Table 7 for details. Mode VCC E G W DQ0-DQ7 Power Deselect 4.5V to 5.5V or 3.0V to 3.6V VIH X X High Z Standby Write VIL X VIL DIN Active Read VIL VIL VIH DOUT Active Read VIL VIH VIH High Z Active Deselect VSO to VPFD (min) (2) X X X High Z CMOS Standby Deselect ≤ VSO X X X High Z Battery Back-up Mode Figure 3. Block Diagram AI01619B LITHIUM CELL VPFD VCC VSS VOLTAGE SENSE AND SWITCHING CIRCUITRY 32K x 8 SRAM ARRAY A0-A14 DQ0-DQ7 E W G POWER |
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