The MR27V401D is a 4Mbit electrically Programmable Read-Only Memory organized as 524,288 word x 8bit. It operates on a single +3V-3.3V power supply and is TTL compatible. The MR27V401D operates asynchronously, eliminating the need for external clocks. It is suitable as large-capacity fixed memory for microcomputers and data terminals. The device is manufactured using a CMOS double silicon gate technology and is offered in 32-pin DIP, 32-pin SOP or 32-pin TSOP packages.
The MR27V401D is a 524,288-word x 8-bit CMOS PROM manufactured by OKI Semiconductor using double silicon gate technology. It operates asynchronously without requiring external clocks and is available in 32-pin DIP, SOP, and TSOP packages.
Key features include TTL-compatible inputs/outputs, three-state outputs, and access times of 70ns to 80ns depending on the supply voltage. The device supports a single +3V-3.3V power supply for operation and requires a separate Vpp programming voltage.
| Memory Capacity | 524,288 word x 8bit |
|---|---|
| Operating Voltage (Vcc) | +3V to +3.3V |
| Access Time (Vec=+3V) | 80ns |
| Access Time (Vcc=+3.3V) | 70ns |
| Operating Temperature Range | -0 to 70 °C |
| Storage Temperature Range | -55 to 125 °C |
The device is organized as 524,288 words by 8 bits.
No, it operates asynchronously so external clocks are not required.
The recommended Vpp for programming is 9.75V.