74F764-1 Datasheet | Philips Semiconductors

FEATURES - Allows two microprocessors to access the same bank of dynamic - Performs arbitration, signal timing, address multiplexing and refresh DESCRIPTION The 74F764-1/765-1 DRAM Dual-ported Controller is a high-speed synchronous dual-port arbiter and timing generator that allows two microprocessors, microcontrollers, or any other memory accessing device to share the same block of DRAM. The device performs arbitration, signal timing, address multiplexing, and refresh address generation, replacing up to 25 discrete devices. - 9 Address output pins allow direct control of up to 256K dynamic RAMs - External address multiplexing enables control of 1Mbit (or greater) dynamic RAMs 74F764-1 vs. 74F765-1 The 74F764-1, though functionally and pin-to-pin patible with the 74F765-1, differs from the later in that it has an on-chip address input latch. This is useful in systems that have unlatched or multiplexed address and data bus. The specialized outputs eliminate the need for signal...