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M48Z35Y-70MH1TR Datasheet(PDF) 1 Page - STMicroelectronics |
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M48Z35Y-70MH1TR Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 18 page 1/18 August 1999 M48Z35 M48Z35Y 256 Kbit (32Kb x8) ZEROPOWER® SRAM s INTEGRATED ULTRA LOW POWER SRAM, POWER-FAIL CONTROL CIRCUIT and BATTERY s READ CYCLE TIME EQUALS WRITE CYCLE TIME s AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION s WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage): – M48Z35: 4.50V ≤ VPFD ≤ 4.75V – M48Z35Y: 4.20V ≤ VPFD ≤ 4.50V s SELF-CONTAINED BATTERY in the CAPHAT DIP PACKAGE s PACKAGING INCLUDES a 28-LEAD SOIC and SNAPHAT® TOP (to be Ordered Separately) s SOIC PACKAGE PROVIDES DIRECT CONNECTION for a SNAPHAT TOP which CONTAINS the BATTERY and CRYSTAL s PIN and FUNCTION COMPATIBLE with JEDEC STANDARD 32K x8 SRAMs DESCRIPTION The M48Z35/35Y ZEROPOWER® RAM is a 32 Kbit x8 non-volatile static RAM that integrates power-fail deselect circuitry and battery control logic on a single die. The monolithic chip is avail- able in two special packages to provide a highly in- tegrated battery backed-up memory solution. Figure 1. Logic Diagram AI01616D 15 A0-A14 W DQ0-DQ7 VCC M48Z35 M48Z35Y G VSS 8 E Table 1. Signal Names A0-A14 Address Inputs DQ0-DQ7 Data Inputs / Outputs E Chip Enable G Output Enable W Write Enable VCC Supply Voltage VSS Ground 28 1 28 1 SOH28 (MH) SNAPHAT (SH) Battery PCDIP28 (PC) Battery CAPHAT |
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