The document describes the features and characteristics of the M48Z35 and M48Z35Y, two 256 Kbit (32 Kbit x 8) ZEROPOWER® SRAM products, including integrated ultra low power SRAM, power-fail control circuit, and battery, equal READ and WRITE cycle time, automatic power-fail chip deselect and WRITE protection, etc.
The M48Z35 and M48Z35Y are 256 Kbit (32 K x 8) non-volatile static RAMs that integrate power-fail control circuitry and a battery on a single die. These devices are pin and function compatible with JEDEC standard 32 K x 8 SRAMs and are available in CAPHAT and SNAPHAT packages.
| Memory Capacity | 256 Kbit (32 K x 8) |
|---|---|
| READ cycle time | 70 ns |
| Data I/O pins | 8 |
| Supply Voltage (M48Z35) | 4.75 to 5.5 V |
| Supply Voltage (M48Z35Y) | 4.5 to 5.5 V |
| Write Protect Voltage (M48Z35) | 4.5 V to 4.75 V |
| Write Protect Voltage (M48Z35Y) | 4.2 V to 4.5 V |
| Operating Temperature | 0 to 70 °C |
When the supply voltage falls below approximately 3 V, the control circuitry connects the battery to maintain data until valid power returns.
Yes, it is a non-volatile pin and function equivalent to any JEDEC standard 32 K x 8 SRAM.