NVRAM, SRAM, 256 Kb (32 K x 8), 70 ns, 4.5 ... 5.5 V, DIL-28

M48Z35 / M48Z35Y
256 Kbit (32 Kbit x 8) ZEROPOWER® SRAM

Description
The M48Z35/Y ZEROPOWER®RAM is a 32 K x 8, non-volatile static RAM that integrates power-fail deselect circuitry and battery control logic on a single die. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory solution. The M48Z35/Y is a non-volatile pin and function equivalent to any JEDEC standard 32 K x 8 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 600 mil DIP CAPHAT™houses the M48Z35/Y silicon with a long life lithium button cell in a single package.

Features:
- Integrated, ultra low power SRAM, power-fail control circuit, and battery
- READ cycle time equals WRITE cycle time
- Automatic power-fail chip deselect and WRITE protection
- WRITE protect voltages: (VPFD = power-fail deselect voltage)
- M48Z35: VCC = 4.75 to 5.5 V; 4.5 V = VPFD = 4.75 V
- M48Z35Y: VCC = 4.5 to 5.5 V; 4.2 V = VPFD = 4.5 V
- Self-contained battery in the CAPHAT™ DIP package
- Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately)
- Pin and function compatible with JEDEC standard 32 K x 8 SRAMs
- RoHS compliant - Lead-free second level interconnect