87C257 - ADDRESS LATCHED 256K 32K x 8 UV EPROM and OTP EPROM

The M87C257 is a high speed 262,144 bit UV erasable and electrically programmable EPROM.

The M87C257 incorporates latches for all address inputs to minimize chip count, reduce cost, and simplify the design of multiplexed bus systems.

• a 2 line control function which accommodates the use of multiple memory connection. The two line control function allows: a. the lowest possible memory power dissipation, b. complete assurance that output bus contention will not occur. For the most efficient use of these two control lines, E should be decoded and used as the primary device selecting function, while G should be made a common connection to all devices in the array and connected to the READ line from the system control bus. This en.