µPD4664312-X is a low power, high speed 64M-bit CMOS mobile specified RAM from NEC
The NEC uPD4664312-X is a high speed, low power 67,108,864 bits (4,194,304 words by 16 bits) CMOS Mobile Specified RAM. It features Low Power Static RAM compatible function and pin configuration, fabricated with advanced CMOS technology using one-transistor memory cells.
The device is packed in a 93-pin TAPE FBGA package and supports extended temperature operation from -25 to +85 °C. It offers fast access times of 65 or 75 ns (MAX) depending on the specific part number, with options for low voltage operation at 2.7 to 3.1 V.
| Organization | 4,194,304 words by 16 bits |
|---|---|
| Access Time (MAX) | 65 or 75 ns |
| Page Access Time (MAX) | 18 or 25 ns |
| Operating Supply Voltage | 2.7 to 3.1 V |
| I/O Voltage (for -BE75X) | 1.65 to 2.1 V |
| Operating Ambient Temperature | -25 to +85 °C |
| Package Type | 93-pin TAPE FBGA |
The maximum access time is either 65 ns or 75 ns, depending on the specific part number.
Yes, it supports low voltage operation ranging from 2.7 to 3.1 V for the chip and 1.65 to 2.1 V for I/O on specific models.
The device has a capacity of 67,108,864 bits, organized as 4,194,304 words by 16 bits.