The MXIC MX27C512 is a 512K-bit (64K x 8) CMOS ultraviolet erasable programmable read-only memory. It operates from a single +5V supply and uses +12.5V for programming; access times are listed as 45/55/70/90/100/120/150 ns. It is completely TTL compatible and has a static standby mode.
The datasheet describes read, standby, fast programming, program inhibit and verify, and auto identify modes, and includes pin descriptions, a mode select table, switching test circuits, absolute maximum ratings, and DC/AC characteristics. Available packages are 28-pin plastic DIP, 32-pin PLCC, and 28-pin 8 x 13.4 mm TSOP(I).
| Organization | 64K x 8 |
|---|---|
| Power supply | Single +5V |
| Programming voltage | +12.5V |
| Access time | 45/55/70/90/100/120/150 ns |
| Operating current | 30 mA |
| Standby current | 100 µA |
It is organized as 64K words by 8 bits per word, or 64K x 8.
It operates from a single +5V supply.
The device is set up in fast programming mode when OE/VPP = 12.75V is applied with VCC = 6.25V, and programming is achieved with a single TTL low 100 µs pulse to CE.