QP27C256-150/YA

The QP27C256 is a 32Kx8 (256- Kbit), UV erasable programmable read-only memory. It operates from a single +5 V supply, has a static standby mode, and features fast single address location programming. The QP27C256 meets the same specification requirements and utilizes the same programming methodology as the AMD 27C256 that it replaces.

Products are available in windowed and non--windowed (OTP) ceramic hermetic packages. Data is typically accessed in less than 55 ns, allowing high-performance microprocessors to operate without any WAIT states. The device offers separate Output Enable ( OE ) and Chip Enable ( CE ) pins, eliminating bus contention in a multiple bus system.

Typical power consumption is only 80 mW in active mode, and 100 µW in standby mode.

All signals are TTL levels, including programming signals. Bit locations may be programmed singly, in blocks, or at random. The device is programmed identically to the AMD27C256 device that it replaces, using the same programming algorithm (100 us pulses).

• Speed options as fast as 55ns
• JEDEC Pinout
• Single +5V power supply
• CMOS and TTL input/output compatibility
• Two line control functions
• Programming time typically 4 seconds